=Changes from v1.6.7.1 to v1.6.7.2=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-78.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.37 (SLES 10)''' 
''' 2.6.18-92.1.26.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):'''
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19601 19601]'''
Severity: enhancement 
Description: Update kernel to RHEL5.2 2.6.18-92.1.26.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19453 19453]'''
Severity: critical, only with RHEL4/SLES9 MDS 
Description: user xattr corruption 
Details: setting extended attributes can corrupt other attributes stored in the inode body. Both user & lustre internal (LOV EA) attributes are concerned. In the latter case, the lustre filesystem can be damaged.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16504 16504]'''
Severity: enhancement 
Description: Update kernel to RHEL4.7 2.6.9-78.0.22.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18289 18289]'''
Severity: enhancement 
Description: allow the use of the kernel provided OFED stack 
Details: This patch allows for lbuild to use the OFED stack provided by the kernel vendor. For the RHEL4 and RHEL5 kernels, we enable the kernel supplied OFED stack.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18775 18775]'''
Severity: enhancement 
Description: improve lctl set/get_param 
Details: handle the bad options, support more than one arguments, add '-F' option to append the indicator to the parameters.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19212 19212]'''
Severity: enhancement 
Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19495 19495]'''
Severity: major 
Frequency: rare 
Description: fix lqs' reference which won't be put in some situations. 
Details: This patch fixes:
1. In quota_check_common(), this function will check quota
for user and group, but only send one return via "pending".
In most cases, the pendings should be same. But that is not
always the case.
2. If quotaoff runs between lquota_chkquota() and
lquota_pending_commit(), the same thing will happen too.
That is why it comes:
- if (!ll_sb_any_quota_active(qctxt->lqc_sb))
- RETURN(0);

=Changes from v1.6.7 to v1.6.7.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18810 18810]'''
Severity: major 
Frequency : rare 
Description: fix racy locking of mballoc block bitmaps causing BUG 
Details: The locking of the mballoc buddy bitmap and the in-memory block bitmap was using two different spin locks in some cases. This made it possible to incorrectly access the mballoc bitmap while another process was modifying it, causing a sanity assertion to fail. While no on-disk corruption was reported, there was some risk of this happening.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18480 18480]'''
Frequency: common 
Description: correct count of recoverable clients 
Details: if recovery failed for client for some reasons (goal inode or something else) server can wait failed clients for finish recovery.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18695 18695]'''
Severity: critical 
Frequency: when directories had atime set in past (e.g. untar) 
Descriptoin: Lustre detected file system corruption with inode out of bounds 
Details: don't update i_size on MDS_CLOSE for directories. This causes directory corruptions on the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18895 18895]'''
Severity: normal 
Frequency: on failed service startup 
Description: replay-single test_61d: LustreError: 17392:0:(lprocfs_status.c:859:lprocfs_obd_cleanup()) ASSERTION(obd->obd_proc_exports_entry->subdir == NULL) failed 
Details: cleanup lprocfs entries on error.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18903 18903]'''
Severity: normal 
Frequency: rare 
Description: llmount.sh: BUG: spinlock wrong owner on CPU#0, mount.lustre/8180 
Details: fix typo in import_set_conn() causing spinlock corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18859 18859]'''
Severity: normal 
Frequency: rare, only when using group lock on client 
Description: Group Lock in Lustre: write call is blocking 
Details: fix wrong return code of ll_is_file_contended() causing processes to be blocked indefinitely.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17757 17757]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(new_lock != NULL) failed:op 0x1 lockh 0x0 
Details: DISP_OPEN_LOCK is not cleared properly in reconstruct_open() since intent_disposition() is used instead of intent_set_disposition().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15428 15428]'''
Severity: major 
Frequency: occasional when using software RAID5 
Description: raid5 panics 
Details: fix panic in raid5_end_read_request().

=Changes from v1.6.6 to v1.6.7=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5. The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16498 16498]'''
Severity: normal 
Description: Get RAID stripe size from superblock 
Details: RAID striping parameters are now saved in the superblock itself, so we should use these parameters instead of having to specify a mount option each time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: major 
Description: Disable big-endian ldiskfs server support. 
Details: The ldiskfs code is not tested on big-endian machines, and there are known compatibility problems in the extents code when running for most of the kernels. Print an error message and refuse to mount, in case anyone tests this. For existing filesystems that might have been created in this way it is possible to mount with the "bigendian_extents" option to force the mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15983 15983]'''
Severity: major 
Description: workaround for OOM from o2iblnd 
Details: OFED needs allocate big chunk of memory for QP while creating connection for o2iblnd, OOM can happen if no such a contiguous memory chunk. QP size is decided by concurrent_sends and max_fragments of o2iblnd, now we permit user to specify smaller value for concurrent_sends of o2iblnd(i.e: concurrent_sends=7), which will decrease memory block size required by creating QP.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15093 15093]'''
Severity: major 
Description: Support Zerocopy receive of Chelsio device 
Details: Chelsio driver can support zerocopy for iov[1] if it's contiguous and large enough.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13490 13490]'''
Severity: normal 
Description: fix credit flow deadlock in uptllnd

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16308 16308]'''
Severity: normal 
Description: finalize network operation in reasonable time 
Details: conf-sanity test_32a couldn't stop ost and mds because it tried to access non-existent peer and tcp connect took quite long before timing out.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16338 16338]'''
Severity: major 
Description: Continuous recovery on 33 of 413 nodes after lustre oss failure 
Details: Lost reference on conn prevents peer from being destroyed, which could prevent new peer creation if peer count has reached upper limit.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16102 16102]'''
Severity: normal 
Description: LNET Selftest results in Soft lockup on OSS CPU 
Details: only hits when 8 or more o2ib clients involved and a session is torn down with 'lst end_session' without preceeding 'lst stop'.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16321 16321]'''
Severity: minor 
Description: concurrent_sends in IB LNDs should not be changeable at run time
Details: concurrent_sends in IB LNDs should not be changeable at run time

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18238 18238]'''
Severity: normal 
Frequency: rare 
Description: panic in mds_open 
Details: don't confuse mds_finish_transno() with PTR_ERR(-ENOENT)

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17972 17972]'''
Severity: normal 
Frequency: rare 
Description: stuck in cache_remove_extent() or panic with accessing to already freed look. 
Details: release lock refernce only after add page to pages list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17636 17636]'''
Severity: normal 
Frequency: always with long access acl 
Descriptoin: mds can't pack reply with long acl. 
Details: mds don't control size of acl but they limited by reint/getattr reply buffer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18049 18049]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: aborting recovery hang on MDS 
Details: don't throttle destroy RPCs for the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18018 18018]'''
Severity: major 
Frequency: on remount 
Description: external journal device not working after the remount 
Details: clear dev_rdonly flag for external journal devices in blkdev_put()

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17802 17802]'''
Severity: minor 
Frequency: rare 
Description: shutdown vs evict race 
Details: client_disconnect_export vs connect request race. if client will evicted at this time - we start invalidate thread without referece to import and import can be freed at same time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16693 16693]'''
Severity: minor 
Frequency: always 
Description: shrink LOV EAs before replying 
Details: correctly adjust LOV EA buffer for reply.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16081 16081]'''
Severity: normal 
Frequency: rare 
Description: don't skip ost target if they assigned to file 
Details: Drop slow OSCs if we can, but not for requested start idx. This means "if OSC is slow and it is not the requested start OST, then it can be skipped, otherwise skip it only if it is inactive/recovering/out-of-space.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17201 17201]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: normal 
Frequency: rare, need ACLs on inode. 
Description: client can't handle ost additional correctly 
Details: if ost was added after client connected to mds client can have hit lnet_try_match_md ... to big messages to wide striped files. in this case need teach client to handle config events about add lov target and update client max ea size at that event.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17374 17374]'''
Severity: enhancement 
Description: Update to sles9 kernel-2.6.5-7.314.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17458 17458]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16578 16578]'''
Severity: normal 
Frequency: Create a symlink file with a very long name 
Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count) 
Details: If there is no extra space in the request for early cancels, ldlm_req_handles_avail() returns 0 instead of a negative value.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: major 
Frequency: rare, during racing unlink and create in same directory 
Description: mds is deadlocked 
Details: in rare cases, inode in directory can have inode number lower than parent inode number. This produces wrong locking order during open and parallel unlink. Teach mds_open to grab locks in inode number order, not parent -> child order.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=1819 1819]'''
Severity: enhancement 
Description: Add /proc entry for import status 
Details: The mdc, osc, and mgc import directories now have an import directory that contains useful import data for debugging connection problems.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15966 15966]'''
Severity: enhancement 
Description: Re-disable certain /proc logging 
Details: Enable and disable client's offset_stats, extents_stats and extents_stats_per_process stats logging on the fly.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16643 16643]'''
Severity: enhancement 
Description: Generic /proc file permissions 
Details: Set /Proc file permissions in a more generic way to enable non-root users operate on some /proc files.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16561 16561]'''
Severity: major 
Description: Hitting mdc_commit_close() ASSERTION 
Details: Properly handle request reference release in ll_release_openhandle().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Description: Prevent import from entering FULL state when server in recovery

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16750 16750]'''
Severity: normal 
Frequency: only with devices that have a ':' in the name 
Description: service mount cannot take device name with ':' 
Details: Only when device name contains ":/" will mount treat it as client mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16566 16566]'''
Severity: enhancement 
Description: Upcall on Lustre log has been dumped 
Details: Allow for a user mode script to be called once a Lustre log has been dumped. It passes the filename of the dumped log to the script, the location of the script can be specified via /proc/sys/lnet/debug_log_upcall.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16583 16583]'''
Severity: minor 
Frequency: rare 
Description: avoid messages about idr_remove called for unallocated id. 
Details: Move s_dev assigment for clustered NFS to end of initialization, to avoid problem with error handling.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16109 16109]'''
Severity: minor 
Frequency: rare 
Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages 
Details: When connection is reused this not moved from CONN_UNUSED_HASH into CONN_USED_HASH and this prodice warning when put connection again in unused hash.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16573 16573]'''
Severity: enhancement 
Description: Export bytes_read/bytes_write count on OSC/OST.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14840 14840]'''
Severity: major 
Description: quota recovery deadlock during mds failover 
Details: This patch includes att18982, att18236, att18237 in bz14840. 
Solve the problems: 
1. fix osts hang when mds does failover with quotaon 
2. prevent watchdog storm when osts threads wait for the recovery of mds 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14095 14095]'''
Severity: enhancement 
Description: Add lustre_start utility to start or stop multiple Lustre servers from a CSV file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17026 17026]'''
Severity: normal 
Description: kptllnd_peer_check_sends() ASSERTION(!in_interrupt()) failed 
Details: fix stack overflow in distributed lock manager by defering export eviction after a failed callback to the ELT thread instead of handling it in the DLM interpret routine.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12800 12800]'''
Severity: enhancement 
Description: More exported tunables for mballoc 
Details: Add support for tunable preallocation window and new tunables for large/small requests

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16680 16680]'''
Severity: normal 
Description: Detect corruption of block bitmap and checking for preallocations 
Details: Checks validity of on-disk block bitmap. Also it does better checking of number of applied preallocations. When corruption is found, it turns filesystem readonly to prevent further corruptions.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17197 17197]'''
Severity: normal 
Description: ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed 
Details: Once the unmatched stride IO mode is detected, shrink the stride-ahead window to 0. If it does hit cache miss, and read pattern is still stride-io mode, does not reset the stride window, but also does not increase the stride window length in this case.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: normal 
Frequency: only for big-endian servers 
Description: Check if system is big-endian while mounting fs with extents 
Details: Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. Can be bypassed with "bigendian_extents" mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16860 16860]'''
Severity: normal 
Description: Excessive recovery window 
Details: With AT enabled, the recovery window can be excessively long (6000+ seconds). To address this problem, we no longer use OBD_RECOVERY_FACTOR when extending the recovery window (the connect timeout no longer depends on the service time, it is set to INITIAL_CONNECT_TIMEOUT now) and clients report the old service time via pb_service_time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16522 16522]'''
Severity: normal 
Description: Watchdog triggered on MDS failover 
Details: enable OBD_CONNECT_MDT flag when connecting from the MDS so that the OSTs know that the MDS "UUID" can be reused for the same export from a different NID, so we do not need to wait for the export to be evicted.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16839 16839]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: ll_sync thread stay in waiting mds<>ost recovery finished 
Details: fix race due to two ll_sync threads processing the same lov target causing random failures in various tests. The solution is to send ACTIVATE event only if connect already finished and import is in FULL state.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17895 17895]'''
Severity: major 
Frequency: rare, only if using MMP with Linux RAID 
Description: MMP doesn't work with Linux RAID 
Details: While using HA for Lustre servers with Linux RAID, it is possible that MMP will not detect multiple mounts. To make this work we need to unplug the device queue in RAID when the MMP block is being written. Also while reading the MMP block, we should read it from disk and not the cached one.

=Changes from v1.6.5.1 to v1.6.6=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.312 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.27 (SLES 10)''' 
''' 2.6.18-92.1.10.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5. The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15272 15272]'''
Severity: normal 
Description: ptl_send_rpc hits LASSERT when ptl_send_buf fails 
Details: only hits under out-of-memory situations

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: enhancement 
Description: Add support for downgrading pools-striped files 
Details: The MDS can understand the new LOV magic from pool striped files and will automatically convert them to the standard striping format for clients (pools will be available in a future release).

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15975 15975]'''
Severity: normal 
Frequency: occasionally, only on patchless client 
Description: add workaround for race between add/remove dentry from hash

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16717 16717]'''
Severity: minor 
Frequency: only during testing 
Description: LBUG when llog conf file is full 
Details: When llog bitmap is full, ENOSPC should be returned for plain log.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Frequency: occasionally, during recovery 
Description: Prevent import from entering FULL state when server in recovery 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare 
Description: avoid ASSERTION(client_stat->nid_exp_ref_count == 0) failed 
Details: release reference to stats when client disconnected, not when export destroyed for avoid races when client destroyed after main ost export.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16679 16679]'''
Severity: normal 
Frequency: when adding OSTs to a running filesystem 
Description: more cleanup in mds_lov 
Details: add workaround for get valid ost count for avoid warnings about drop too big messages, not init llog cat under semphore which can be blocked on reconnect and break normal replay, fix access to wrong pointer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Frequency: only when connecting 1.6.5 clients to 1.6.4 or earlier servers 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16006 16006]'''
Severity: normal 
Frequency: rare 
Description: statfs sometimes returns stale values on the client 
Details: restore missing copy oi_flags to lov requests.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16188 16188]'''
Severity: enhancement 
Description: Update to SLES9 kernel-2.6.5-7.312. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16503 16503]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.22.EL. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16317 16317]'''
Severity: minor 
Frequency: when clients reconnect to server 
Description: per-export statistics in /proc are broken 
Details: recreate /proc entries for clients when they reconnect.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16080 16080]'''
Severity: normal 
Frequency: when adding OSTs to a mounted filesystem 
Description: don't fail open with -ERANGE 
Details: if client connected until mds will be know about real ost count get LOV EA can be fail because mds not allocate enougth buffer for LOV EA.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16101 16101]'''
Severity: normal 
Frequency: only for filesystems larger than 8TB 
Description: ldiskfs BUG ldiskfs_mb_use_best_found() 
Details: The ldiskfs mballoc3 code was using a __u16 to store the group number, but with 8TB+ filesystems there are more than 65536 groups, causing an oops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15576 15576]'''
Severity: normal 
Frequency: rare 
Description: Resolve device initialization race 
Details: Prevent proc handler from accessing devices added to the obd_devs array but yet be intialized.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15308 15308]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16190 16190]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16318 16318]'''
Severity: normal 
Frequency: rare, on PPC clients 
Description: don't swab ost objects in response about directory, because this not exist. 
Details: bug similar bug 14856, but in different function.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15754 15754]'''
Severity: enhancement 
Description: lfs quota tool enhancements 
Details: added units specifiers support for setquota, default to current uid/gid for quota report, short quota stats by default, nonpositional parameters for setquota, added llapi_quotactl manual page.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16037 16037]'''
Severity: normal 
Frequency: only on 32-bit clients with more than 1GB of RAM 
Description: Client runs out of low memory 
Details: Consider only lowmem when counting initial number of llap pages

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15625 15625]'''
Severity: enhancement 
Description: optional service tags registration 
Details: if the "service tags" package is installed on a Lustre node When the filesystem is mounted, a local-node service tag will be created. See http://inventory.sun.com/ for more information about the Service Tags asset management system.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15825 15825]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: Kernel BUG tries to release flock 
Details: Lustre does not destroy flock lock before last reference goes away. So always drop flock locks when client is evicted and perform unlock regardless of successfulness of speaking to MDS.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16189 16189]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.20. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]'''
Severity: normal 
Frequency: rare, only during unmount 
Description: add refcount for osc callbacks, so avoid panic on shutdown 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16014 16014]'''
Severity: normal 
Frequency: only if OSTs have been removed or non-sequential OST index used 
Description: Kernel panic with find ost index. 
Details: lov_obd have panic if some OST's have sparse indexes.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15865 15865]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15924 15924]'''
Severity: major 
Frequency: only if client is mounted with "-o flock" 
Description: do not process already freed flock 
Details: flock can possibly be freed by another thread before it reaches to ldlm_flock_completion_ast.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14480 14480]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: LBUG during stress test 
Details: Need properly lock accesses the flock deadlock detection list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15837 15837]'''
Severity: minor 
Frequency: rare 
Description: oops in page fault handler 
Details: kernel page fault handler can return two special 'pages' in error case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15716 15716]'''
Severity: minor 
Frequency: rare, during recovery 
Description: timeout with invalidate import. 
Details: ptlrpcd_check call obd_zombie_impexp_cull and wait request which should be handled by ptlrpcd. This produce long age waiting and -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14742 14742]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(CheckWriteback(page,cmd)) failed 
Details: badly clear PG_Writeback bit in ll_ap_completion can produce false positive assertion.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15779 15779]'''
Severity: normal 
Frequency: only with broken builds/installations 
Description: no LBUG if lquota.ko and fsfilt_ldiskfs.ko are different versions 
Details: just return an error to a user, put a console error message

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15741 15741]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15742 15742]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.15. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14134 14134]'''
Severity: enhancement 
Description: enable MGS and MDT services start separately 
Details: add a 'nomgs' option in mount.lustre to enable start a MDT with a co-located MGS without starting the MGS, which is a complement to 'nosvc' mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]'''
Severity: normal 
Frequency: always, on big-endian systems 
Description: cleanup in ptlrpc code, related to PPC platform 
Details: store magic in native order avoid panic's in recovery on PPC node and forbid from this error in future. Also fix posibily of twice swab data. Fix get lov striping to userpace.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15756 15756]'''
Severity: normal 
Frequency: rare, replay get lost on server 
Description: server incorrectly drop resent replays lead to recovery failure. 
Details: do not drop replay according to msg flags, instead we check the per-export recovery request queue for duplication of transno.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14835 14835]'''
Severity: normal 
Frequency: after recovery 
Description: precreate to many object's after del orphan. 
Details: del orphan st in oscc last_id == next_id and this triger growing count of precreated objects. Set flag LOW to skip increase count OF precreated objects.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare, on clear nid stats 
Description: ASSERTION(client_stat->nid_exp_ref_count == 0) 
Details: when clean nid stats sometimes try destroy live entry, and this produce panic in free.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15575 15575]'''
Severity: major 
Frequency: occasionally since 1.6.4 
Description: Stack overflow during MDS log replay 
Details: ease stack pressure by using a thread dealing llog_process.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]'''
Severity: minor 
Frequency: very rare 
Description: MDT cannot be unmounted, reporting "Mount still busy" 
Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15443 15443]'''
Severity: normal 
Frequency: rare 
Description: wait until IO finished before start new when do lock cancel. 
Details: VM protocol want old IO finished before start new, in this case need wait until PG_writeback is cleared until check dirty flag and call writepages in lock cancel callback.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12888 12888]'''
Severity: normal 
Frequency: rare 
Description: mds_mfd_close() ASSERTION(rc == 0) 
Details: In mds_mfd_close(), we need protect inode's writecount change within its orphan write semaphore to prevent possible races.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14645 14645]'''
Severity: minor 
Frequency: rare, on shutdown ost 
Description: don't hit live lock with umount ost. 
Details: shrink_dcache_parent can be in long loop with destroy dentries, use shrink_dcache_sb instead.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14949 14949]'''
Severity: minor 
Frequency: only when echo_client is used 
Description: don't panic with use echo_client 
Details: echo client pass NULL as client nid pointer and this produce NULL pointer dereference.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15278 15278]'''
Severity: normal 
Frequency: Always on 32-bit PowerPC systems 
Description: fix build on PPC32 
Details: compile code with -m64 flag produce wrong object file for PPC32.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15574 15574]'''
Severity: normal 
Frequency: rare 
Description: MDS LBUG: ASSERTION(!IS_ERR(dchild)) 
Details: In reconstruct_* functions, LASSERTs on both the data supplied by a client, and the data on disk are dangerous and incorrect. Change them with client eviction.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15346 15346]'''
Severity: enhancement 
Description: skiplist implementation simplification 
Details: skiplists are used to group compatible locks on granted list that was implemented as tracking first and last lock of each lock group the patch changes that to using doubly linked lists

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14693 14693]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15932 15932]'''
Severity: normal 
Frequency: blocks per group < blocksize*8 and uninit_groups is enabled 
Description: ldiskfs error: XXX blocks in bitmap, YYY in gd 
Details: If blocks per group is less than blocksize*8, set rest of the bitmap to 1.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15953 15953]'''
Severity: normal 
Description: more ldlm soft lockups 
Details: In ldlm_resource_add_lock(), call to ldlm_resource_dump() starve other threads from the resource lock for a long time in case of long waiting queue, so change the debug level from D_OTHER to the less frequently used D_INFO.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]'''
Severity: enhancement 
Description: add -gid, -group, -uid, -user options to lfs find 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15284 15284]'''
Severity: enhancement 
Description: tool to recover objects put in lost+found by e2fsck 
Details: OST crashes and subsequent e2fsck can lead to objects being moved to lost+found directory. Using the "ll_recover_lost_found_objs" tool, these objects can be retrieved and data can be salvaged by using the object ID saved in the fid.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15758 15758]'''
Severity: minor 
Frequency: rare 
Description: this bug _only_ happens when inode quota limitation is very low (less than 12), so that inode quota unit is 1 at initialization. 
Details: if remaining quota equates 1, it is a sign to demonstate that quota is effective now. So least quota qunit should be 2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15950 15950]'''
Severity: normal 
Frequency: rare, using O_DIRECT only 
Description: Hung threads in invalidate_inode_pages2_range 
Details: The direct IO path doesn't call check_rpcs to submit a new RPC once one is completed. As a result, some RPCs are stuck in the queue and are never sent.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15684 15684]'''
Severity: normal 
Frequency: rare, during shutdown 
Description: Procfs and llog threads access destoryed import sometimes. 
Details: Sync the import destoryed process with procfs and llog threads by the import refcount and semaphore.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15674 15674]'''
Severity: major 
Description: mds fails to respond, threads stuck in ldlm_completion_ast 
Details: Sort source/child resource pair after updating child resource.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16226 16226]'''
Severity: major 
Frequency: rare 
Description: kernel BUG at ldiskfs2_ext_new_extent_cb 
Details: If insertion of an extent fails, then discard the inode preallocation and free data blocks else it can lead to duplicate blocks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16199 16199]'''
Severity: normal 
Description: don't always update ctime in ext3_xattr_set_handle() In some cases the ctime should not be updated, for example for 2.0->1.8 compatibility it is necessary to delete an xattr and it should not update the ctime.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15058 15058]'''
Severity: normal 
Description: add quota statistics 
Details: 1. sort out quota proc entries and proc code. 2. add quota statistics

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16125 16125]'''
Severity: normal 
Frequency: often 
Description: quotas are not honored with O_DIRECT 
Details: all writes with the flag O_DIRECT will use grants which leads to this problem. Now using OBD_BRW_SYNC to guard this.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15713 15713]'''
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16362 16362]'''
Severity: major 
Frequency: rare 
Description: Assertion in iopen_connect_dentry in 1.6.3 
Details: looking up an inode via iopen with the wrong generation number can populate the dcache with a disconneced dentry while the inode number is in the process of being reallocated. This causes an assertion failure in iopen since the inode's dentry list contains both a connected and disconnected dentry.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16496 16496]'''
Severity: normal 
Description: assertion failure in ldlm_handle2lock() 
Details: fix a race between class_handle_unhash() and class_handle2object() introduced in lustre 1.6.5 by bug 13622.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: minor 
Frequency: rare 
Description: Pools downgrade compatibility 
Details: Files striped across pools in future (1.8) releases will be properly understood if the server is downgraded to this version.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12755 12755]'''
Severity: minor 
Frequency: rare 
Description: Kernel BUG: sd_iostats_bump: unexpected disk index 
Details: remove the limit of 256 scsi disks in the sd_iostat patch

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16494 16494]'''
Severity: minor 
Frequency: rare 
Description: oops in sd_iostats_seq_show() 
Details: unloading/reloading the scsi low level driver triggers a kernel bug when trying to access the sd iostat file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16404 16404]'''
Severity: major 
Frequency: rare 
Description: Kernel panics during QLogic driver reload 
Details: REQ_BLOCK_PC requests are not handled properly in the sd iostat patch, causing memory corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16140 16140]'''
Severity: minor 
Description: journal_dev option does not work in b1_6 
Details: pass mount option during pre-mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10555 10555]'''
Severity: enhancement 
Description: Add a FIEMAP (FIle Extent MAP) ioctl for ldiskfs 
Details: FIEMAP ioctl will allow an application to efficiently fetch the extent information of a file. It can be used to map logical blocks in a file to physical blocks in the block device.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16972 16972]'''
Severity: normal 
Frequency: only with adaptive timeout enabled 
Description: DEBUG_REQ() bad paging request 
Details: ptlrpc_at_recv_early_reply() should not modify req->rq_repmsg because it can be accessed by reply_in_callback() without the rq_lock held.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16813 16813]'''
Severity: normal 
Frequency: only on Cray X2 
Description: X2 build failures 
Details: fix build failures on Cray X2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16303 16303]'''
Severity: major 
Frequency: Only on FC kernels 2.6.22+ 
Description: oops in statahead 
Details: Do not drop reference count for the dentry from VFS when lookup, VFS will do that by itself.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17024 17024]'''
Severity: major 
Description: Lustre oops in {:ptlrpc:ptlrpc_server_free_request+373} 
Details: In case of memory pressure, list_del() can be called twice on req->rq_history_list, causing a kernel oops.

=Changes from v1.6.5 to v1.6.5.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14309 14309]'''
Severity: normal 
Description: RPM packages did not include InfinBand support 
Details: The Lustre 1.6.5 did not include InfiniBand RPM packages.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14699 14699]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

=Changes from v1.6.4.3 to v1.6.5=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*Severity: critical

Frequency: very rare, if additional xattrs are used on kernels >= 2.6.12

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15777 15777]

Description: MDS may lose file striping (and hence file data) in some cases

Details: If there are additional extended attributes stored on the MDS, in particular ACLs, SELinux, or user attributes (if user_xattr is specified for the client mount options) then there is a risk of attribute loss. Additionally, the Lustre file striping needs to be larger than default (e.g. striped over all OSTs), and an additional attribute must be stored initially in the inode and then increase in size enough to be moved to the external attribute block (e.g. ACL growing in size) for file data to be lost.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12191 12191]

Description: add message levels for liblustreapi

*Severity: minor

Frequency: rare, only if {mds,oss}_num_threads is specified

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=15759 15759]

Description: MDS or OSS service threads fail startup with -24 (-EMFILE)

Details: During startup under recovery, it is possible for service thread startup to fail in ptlrpc_start_threads() if one of the threads begins processing a request and then starts an additional thread. This causes ptlrpc_start_threads() to try and start 1 too many threads and get an error.

*Severity: normal

Frequency: rare

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: MDT cannot be unmounted, reporting "Mount still busy"

Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: fix for occasional failure case of -ENOSPC in recovery-small tests

Details: Move the 'good_osts' check before the 'total_bavail' check. This will result in an -EAGAIN and in the exit call path we call alloc_rr() which will with increasing aggressiveness attempt to aquire precreated objects on the minimum number of required OSCs.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14326 14326]

Description: Use old size assignment to avoid deadlock

Details: This reverts the changes in bugs 2369 and bug 14138 that introduced
the scheduling while holding a spinlock. We do not need locking for size in ll_update_inode() because size is only updated from the MDS for directories or files without objects, so there is no other place to do the update, and concurrent access to such inodes are protected by the inode lock.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14655 14655]

Description: Use __u64 instead of int for valid bits

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14746 14746]

Description: resolve "_IOWR redefined" build error on SLES10

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14763 14763]

Description: dump the memory debugging after all modules are unloaded to suppress false negative in conf_sanity test 39

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14872 14872]

Description: the recovery timer never expires

Details: for new client connect request, the recovery timer should not be reset, otherwise recovery timer will never expired, if the old client never come. Only old client connect and first connection req should trigger recovery timer reset.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15521 15521]

Description: the min numbers of lproc stats are wrong

Details: adding a new constant LC_MIN_INIT and use it for initialization of lc_min.

*Severity: normal

Frequency: always with interactive lfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15212 15212]

Description: Reinitialize optind to 0 so that interactive lfs works in all cases

*Severity: normal

Frequency: with multiple concurrent readdir processes in same directory

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15406| 15406] [https://bugzilla.lustre.org/show_bug.cgi?id=15169 15169] [https://bugzilla.lustre.org/show_bug.cgi?id=15175 15175]

Description: misc fixes for directory readahead.

Details: prevent previous statahead async RPC callback from processing the current "statahead_info", race condition between async RPC callback add dentry into dentry hash table and "ls" thread revalidate such dentry, statahead his/miss control for hidden items, and so on.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15316 15316]

Description: build kernel-ib packages for OFED 1.3 in our release cycle

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15036 15036]

Description: incore types cleaning in quota code (with respect to 64-bit limits)

Details: several u32 variables declarations are replaced with u64 declarations

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: fix SLES kernel versioning

Details: the kernel version for our SLES 10 kernel did not include a "-" before the "smp" at the end. while this was not a problem in general, it did mean that software trying to use the kernel version to try to detect a vendor specific kernel would fail. this was most evident by the OFED build scripts.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14803 14803]

Description: Don't update lov_desc members until making sure they are valid

Details: When updating lov_desc members via proc fs, need fix their validities before doing the real update.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15069 15069]

Description: don't put request into delay list while invalidate in flight.

Details: ptlrpc_delay_request sometimes put in delay list while invalidate import in flight. this produce timeout for invalidate and sometimes can cause stale data.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15240 15240]

Description: Update kernel to RHEL4 2.6.9-67.0.7.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]

Frequency: on PPC only

Description: not convert ost objects for directory because it's not exist.

Details: ll_dir_getstripe assume directory has ost objects but this wrong.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15517 15517]

Description: Fix warnings with compile liblustre at sles10/rhel5 which have __u64 as usingied long long type.

*Severity: minor

Frequency: rare, on shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]

Description: race process AST vs remove callback

Details: removing callback before disconnect import open race with processing callback.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]

Description: Files open for execute are not marked busy on SLES10

Details: Add FMODE_EXEC to SLES10 SP1 server kernel series.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13397 13397]

Description: Add server support for vanilla-2.6.22.14.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13375 13375]

Description: Avoid lov_create() getting stuck in obd_statfs_rqset()

Details: If an OST is down the MDS will hang indefinitely in obd_statfs_rqset() waiting for the statfs data. While for MDS QOS usage of statfs, it should not stuck in waiting.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3055 3055]

Description: Disable adaptive timeouts by default

*Severity: major

Frequency: on network error

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15027 15027]

Description: panic with double free request if network error

Details: mdc_finish_enqueue is finish request if any network error occuring, but it's true only for synchronus enqueue, for async enqueue (via ptlrpcd) this incorrect and ptlrpcd want finish request himself.

*Severity: normal

Frequency: rare, on recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14533 14533]

Description: read procfs can produce deadlock in some situation

Details: Holding lprocfs lock with send rpc can produce block for destroy obd objects and this also block reconnect with -EALREADY. This isn't fix all lprocfs bugs - but make it rare.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15152 15152]

Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.

*Severity: major

Frequency: frequent on X2 node

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15010 15010]

Description: mdc_set_open_replay_data LBUG

Details: Set replay data for requests that are eligible for replay.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14321 14321]

Description: lustre_mgs: operation 101 on unconnected MGS

Details: When MGC is disconnected from MGS long enough, MGS will evict the MGC, and late on MGC cannot successfully connect to MGS and a lot of the error messages complaining that MGS is not connected.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack, the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14720 14720]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.

*Serverity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793]

Description: Update RHEL4 kernel to 2.6.9-67.0.4.

*Severity: minor

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Don't allow skipping OSTs if index has been specified.

Details: Don't allow skipping OSTs if index has been specified, make locking in internal create lots better.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14421 14421]

Description: ASSERTION(!PageDirty(page)) failed

Details: Wrong check could lead to an assertion failure under specific load patterns.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12228 12228]

Description: LBUG in ptlrpc_check_set() bad phase ebc0de00

Details: access to bitfield in structure is always rounded to long and this produce problem with not atomic change any bit.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13647 13647]

Description: Lustre 'make rpms' failed.

Details: Remove ldiskfs spec file to avoids rpmbuild be confused when builds Lustre rpms from tarball.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14498 14498]

Description: Update to SLES9 SP4 kernel-2.6.5-7.308.

*Severity: normal

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14608 14608]

Description: If llog cancel was not send before clean_exports phase, this can produce deadlock in llog code.

Details: If llog thread has last reference to obd and call class_import_put this produce deadlock because llog_cleanup_commit_master wait when last llog_commit_thread exited, but this never success because was called from llog_commit_thread.

*Severity: normal

Frequency: only if OST index is skipped

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14607 14607]

Description: NULL lov_tgts causing MDS oops

Details: more safe checks for NULL lov_tgts for avoid oops.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14531 14531]

Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14368 14368]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14136 14136]

Description: make mgs_setparam() handle fsname containing dash

Details: fsname containing a dash does not work with lctl conf_param

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14288 14288]

Description: Update to RHEL4 Update-6 kernel-2.6.9-67.EL.

*Severity: normal

Frequency: rare, in recovery and (or) destroy lovobjid file.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12702 12702]

Description: rewrite lov_objid code.

Details: Cleanup for lov_objid code, remove scability problems and wrong locking. Fix sending last_id into OST.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14388 14388]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14289 14289]

Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.

Details: Use d_move_locked instead of __d_move.

*Severity: major

Frequency: rare, at shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14260 14260]

Description: access already free / zero obd_namespace.

Details: if client_disconnect_export was called without force flag set, and exist connect request in flight, this can produce access to NULL pointer (or already free pointer) when connect_interpret store ocd flags in obd_namespace.

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14418 14418]

Description: not alloc memory with spinlock held.

Details: allocation memory with GFP_KERNEL can produce sleep deadlock, if any spinlock held.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14270 14270]

Description: lfs find does not continue on file error

Details: Continue other files processing when a file/dir is absent.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11791 11791]

Description: Inconsistent usage of lustre_pack_reply()

Details: Standardize the usage of lustre_pack_reply() such that it always generate a CERROR on failure.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3462 3462]

Description: Fix replay if there is an un-replied request and open

Details: In some cases, older replay request will revert the mcd->mcd_last_xid on MDS which is used to record the client's latest sent request.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13874 13874]

Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13889 13889]

Description: Update to SLES9 kernel-2.6.5-7.287.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14041 14041]

Description: Update to RHEL4 kernel-2.6.9-55.0.12.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13690 13690]

Description: Build SLES10 patchless client fails

Details: The configure was broken by run ./configure with --with-linux-obj=.... argument for patchless client. When the configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude can't search header adequately. Use absolute path such as -I($LINUX)/include instead.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11622 11622]

Description: Lustre Page Accounting

Details: New macros for page alloc and free which enable accounting of page allocation of Lustre. Use percpu counters to store memory and page statistics.

*Severity: normal

Frequency: only if debugging is disabled

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13497 13497]

Description: LASSERT_{REQ,REP}SWAB macros are buggy

Details: If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop these macros and replace them with their definitions instead.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13888 13888]

Description: interrupt oig_wait produce painc on resend.

Details: brw_redo_request can be used for resend requests from ptlrpcd and private set, and this produce situation when rq_ptlrpcd_data not copyed to new allocated request and triggered LBUG on assert req->rq_ptlrpcd_data != NULL. But this member used only for wakeup ptlrpcd set if request is changed and can be safety changed to use rq_set directly.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11089 11089]

Description: organize the server-side client stats on per-nid basis

Details: Change the structure of stats under obdfilter and mds to
New structure:
+- exports
+- nid#1
| + stats
| + uuids
+- nid#2...
+- clear
The "uuid"s file would list the uuids of _active_ exports. And the clear entry is to clear all stats and stale nids.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12266 12266]

Description: Processes looping in ll_readdir() on Lustre clients finally causing a full node pseudo-hang

Details: Concurrent access to the same directory from multiple clients with intensive file creation/removal can cause a client node to spin in ll_readdir(). i_version must be increased every time the lock is cancelled to ensure a revalidate is done.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12829 12829] [https://bugzilla.lustre.org/show_bug.cgi?id=13455 13455]

Description: Changing primary group doesn't change the group lustre assigns to a file

Details: When CRAY_XT3 is defined, the fsgid supplied by the client is overridden with the primary group provided by the group upcall, whereas the supplied fsgid can be trusted if it is in the list of supplementary groups returned by the group upcall.

*Severity: enhancement
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12749 12749]

Description: Root Squash Functionality

Details: Implementation of NFS-like root squash capability. Specifically, don't allow someone with root access on a client node to be able to manipulate files owned by root on a server node.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10718 10718]

Description: Slow trucate/writes to huge files at high offsets.

Details: Directly associate cached pages to lock that protect those pages, this allows us to quickly find what pages to write and remove once lock callback is received.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14379 14379]

Description: Too many locks accumulating on client during NFS usage

Details: mds_open improperly used accmode to find out access mode to a file. Also mdc_intent_lock logic to find out if we already have lock similar to just received was flawed since introduction of skiplists - locks are now added to the front of the granted queue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14477 14477]

Description: Hit ASSERTION(obd->obd_stopping == 1) failed in some setup failed situation.

Details: In obd setup failure handler, obd_stopping will not necessarily to be 1, and obd_set_up should also be checked to make sure whether obd is completely setup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14398 14398]

Description: Allow masking D_WARNING, D_ERROR messages from console

Details: Console messages can now be disabled via lnet.printk.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14614 14614]

Description: User code with malformed file open parameter crashes client node

Details: Before packing join_file req, all the related reference should be checked carefully in case some malformed flags cause fake join_file req on client.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10600 10600]

Description: shrink/enlarge qunit size when needed; fix the problem of coarse grain of quota doing harm to quota's accuracy

Details: qunit size will be changed when quota limitation is too low/high; record the pending quota write in order to get more accureate quota; delete the patch for bug12588, which is unnecessary when this patch is landed. This bug also contains fixes for bug 14526, 14299, 14601 and 13794.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14225 14225]

Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK

Details: ldlm_completion_ast() assumes that a lock is granted when the req mode is equal to the granted mode. However, it should also check that LDLM_FL_CP_REQD is not set.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14360 14360]

Description: Heavy nfs access might result in deadlocks

Details: After ELC code landed, it is now improper to enqueue any mds locks under och_sem, because enqueue might want to decide to cancel open locks for same inode we are holding och_sem for.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14443 14443]

Description: 35% write performance drop with ldiskfs2 when quotas are on

Details: Enable ext3 journalled quota by default to improve performance when quotas are turned on.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13843 13843]

Description: Client eviction while running blogbench

Details: A lot of unlink operations with concurrent I/O can lead to a deadlock causing evictions. To address the problem, the number of oustanding OST_DESTROY requests is now throttled to max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking callbacks are processed in priority.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14845 14845]

Description: conflicts between asm-ppc64/types.h and lustre_types.h

Details: fix duplicated definitions between asm-ppc64/types.h and lustre_types.h on PPC.

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14844 14844]

Description: asm-ppc/segment.h does not exist

Details: fix compile issue on PPC.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: add support for several checksum algorithms. Currently, CRC32 and Adler-32 are supported. The checksum type can be changed on the fly through /proc/fs/lustre/osc/*/checksum_type.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14648 14648]

Description: use adler32 for page checksums

Details: when available, use the Adler-32 algorithm instead of CRC32 for page checksums.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14864 14864]

Description: better handle error messages in extents code

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14729 14729]

Description: SNMP support enhancement

Details: Adding total number of sampled request for an MDS node in snmp support.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14748 14748]

Description: Optimize ldlm waiting list processing for PR extent locks

Details: When processing waiting list for read extent lock and meeting read lock that is same or wider to it that is not contended, skip processing rest of the list and immediatelly return current status of conflictness, since we are guaranteed there are no conflicting locks in the rest of the list.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14774 14774]

Description: Time out and refuse to reconnect

Details: When the failover node is the primary node, it is possible to have two identical connections in imp_conn_list. We must compare not conn's pointers but NIDs, otherwise we can defeat connection throttling.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775]

Description: Client not clear own cache if answer to reconnect is lost.

Details: Client gets evicted from server. Now client also thinks it is disconnected (or gets ENOTCONN on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but reply is lost and not reported to client. Client reconnects again and gets back a just-created connection, but it is not new so client thinks it was not evicted and does not do recovery.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14483 14483]

Description: Detect stride IO mode in read-ahead

Details: When a client does stride read, read-ahead should detect that and read-ahead pages according to the detected stride pattern.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15033 15033]

Description: build for X2 fails

Details: fix compile issue on Cray systems.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13371 13371]

Description: implement readv/writev APIs(aio_read/aio_writes in newer kernels)

Details: This greatly improves speed of NFS writes on 2.6 kernels.

*Severity: normal

Frequency: only on PPC/SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14855 14855]

Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h

Details: On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to be defined. Add a hack in mkfs_lustre.c to work around this compile issue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14257 14257]

Description: LASSERT on MDS when client holding flock lock dies

Details: ldlm pool logic depends on number of granted locks equal to number of released locks which is not true for flock locks, so just exclude such locks from consideration.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15188 15188]

Description: MDS deadlock with many ll_sync_lov threads and I/O stalled

Details: Use fsfilt_sync() for both the whole filesystem sync and individual file sync to eliminate dangerous inode locking with I_LOCK that can lead to a deadlock.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15566 15566]

Description: Update an obsolete wirecheck.c generator

Details: Update wirecheck.c/wirehdr.c and regenerate wiretest.c

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14712 14712]

Description: Client can panic on open sometimes

Details: It is possible that we try to free already freed request in ll_file_open in some error cases when we send request from ll_file_open

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14410 14410]

Description: performance in 1.6.3

Details: Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be sure that 1MB requests are not fragmented by the block layer.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15198 15198]

Description: LDLM soft lockups - improvement

Details: It is be possible to send the lock handle along with each read or write request because the client is already doing a lock match itself so there isn't any reason the OST should have to re-do that search.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14036 14036]

Description: lfs quota fails with deactivated OSTS

Details: With this patch, three improvements are included:
1. detete the softlimit in mds and osts when use "lfs quota".
2. display the inaccurate data in the output of "lfs quota".
3. try to get quota info when "lfs quota" is executed.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15776 15776]

Description: Extent locks not granted with no conflicts sometimes.

Details: When race occurs in glimpse handler and nothing is returned, we do not reprocess the queue after lock cancel, and that leads to a stall until next activity on a resource

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15712 15712]

Description: ksocknal_create_conn() hit ASSERTION during connection race

Details: ksocknal_create_conn() hit ASSERTION during connection race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13983 13983]

Description: ksocknal_send_hello() hit ASSERTION while connecting race

Details: ksocknal_send_hello() hit ASSERTION while connecting race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14425 14425]

Description: o2iblnd/ptllnd credit deadlock in a routed config.

Details: o2iblnd/ptllnd credit deadlock in a routed config.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14956 14956]

Description: High load after starting lnet

Details: gmlnd should sleep in rx thread in interruptible way. Otherwise, uptime utility reports high load that looks confusingly.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14838 14838]

Description: ksocklnd fails to establish connection if accept_port is high

Details: PID remapping must not be done for active (outgoing) connections

=Changes from v1.6.4.2 to v1.6.4.3=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-67.0.4.EL (RHEL 4), 2.6.16.54-0.2.5 (SLES 10), 2.6.18-53.1.13.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793 ]

Description: Update to the latest RHEL4 kernel (i.e. 2.6.9-67.0.4.EL) to fix the vulnerabilities described in CVE-2008-0001, CVE-2007-5500 and CVE-2007-4130.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858 ]

Description: Update to the latest SLES10 kernel (i.e. 2.6.16.54-0.2.5) to fix the security problems described in CVE-2008-0007, CVE-2008-0001, CVE-2007-5966 and CVE-2007-6417.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876 ]

Description: Update to the latest RHEL5 kernel (i.e. 2.6.18-53.1.13.el5) to fix the vulnerability described in CVE-2008-0600. This problem could allow local user to gain root privileges.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618 ]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775 ]

Description: Client not clear own cache if answer to reconnect is lost.

Details: client gets evicted from server. Now client also thinks it is disconnected (ot gets enotconn on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but client gets a reply that the export is new, and so no recovery should be performed.

=Changes from v1.6.4.1 to v1.6.4.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Frequency: only for relatively new filesystems, when OSTs are in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14631 14631 ]

Description: OST objects below id 20000 are deleted, causing data loss

Details: For relatively newly formatted OST filesystem(s), where there have not been at least 20000 objects created on an OST a bug in MDS->OST orphan recovery could cause those objects to be deleted if the OST was in recovery, but the MDS was not. Safety checks in the orphan recovery prevent this if more than 20000 objects were ever created on an OST. If the MDS was also in recovery the problem was not hit. Only in 1.6.4.1.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

=Changes from v1.6.4 to v1.6.4.1=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14433 14433]

Description: Oops on connection from 1.6.3 client

Frequency: always, on connection from 1.6.3 client

Details: Enable and accept the OBD_CONNECT_LRU_RESIZE flag only if LRU resizing is enabled at configure time. This fixes an oops caused by incorrectly accepting the LRU_RESIZE feature even if --enable-lru-resize is not specified.

=Changes from v1.6.3 to v1.6.4=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11686 11686]

Description: Console message flood

Details: Make cdls ratelimiting more tunable by adding several tunable in procfs /proc/sys/lnet/console_{min,max}_delay_centisecs and /proc/sys/lnet/console_backoff.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13521 13521]

Description: Update kernel patches for SLES10 2.6.16.53-0.8.

Details: Update which_patch & target file for SLES10 latest kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]

Description: add --type and --size parameters to lfs find

Details: Enhance lfs find by adding filetype and filesize parameters. Also multiple OBDs can now be specified for the --obd option.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11270 11270]

Description: eliminate client locks in face of contention

Details: file contention detection and lockless i/o implementation for contended files.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12411 12411]

Description: Remove client patches from SLES 10 kernel.

Details: This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2369 2369 ]

Description: use i_size_read and i_size_write in 2.6 port

Details: replace inode->i_size access with i_size_read/write()

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13454 13454]

Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13518 13518]

Description: Kernel patches update for RHEL4 2.6.9-55.0.6.

Details: Modify vm-tunables-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13452 13452]

Description: Kernel config for 2.6.18-vanilla.

Details: Modify targets/2.6-vanilla.target.in. Add config file kernel-2.6.18-2.6-vanilla-i686.config. Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13207 13207]

Description: adapt the lustre_config script to support the upgrade case

Details: Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel.

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13751 13751]

Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.

Details: Modify target file & which_patch. A flaw was found in the IA32 system call emulation provided on AMD64 and Intel 64 platforms. An improperly validated 64-bit value could be stored in the %RAX register, which could trigger an out-of-bounds system call table access. An untrusted local user could exploit this flaw to run code in the kernel (ie a root privilege escalation). (CVE-2007-4573).

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13748 13748]

Description: Update RHEL 4 kernel to fix local root privilege escalation.

Details: Update to the latest RHEL 4 kernel to fix the vulnerability described in CVE-2007-4573. This problem could allow untrusted local users to gain root access.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14353 14353]

Description: excessive CPU consumption on client reduces IO performance

Details: in some cases the ldlm_poold thread is spending too much time trying to cancel locks, and is cancelling them too aggressively and this can severely impact IO performance. Disable the dynamic LRU resize code at build time. It can be re-enabled with configure --enable-lru-resize at build time.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13917 13917]

Description: MDS hang or stay in waiting lock

Details: If client receive lock with CBPENDING flag ldlm need send lock cancel as separate rpc, to avoid situation when cancel request can't processed due all i/o threads stay in wait lock.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11710 11710]

Description: improve handling recoverable errors
Details: If request processed with error which can be recoverable on server request should be resend, otherwise page released from cache and marked as error.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12302 12302]

Description: new userspace socklnd

Details: Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced with new one - usocklnd.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13730 13730]

Description: Do not fail import if osc_interpret_create gets -EAGAIN

Details: If osc_interpret_create got -EAGAIN it immediately exits and wakeup oscc_waitq. After wakeup oscc_wait_for_objects call oscc_has_objects and see OSC has no objests and call oscc_internal_create to resend create request.

*Severity: normal

Frequency: when removing large files

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13181 13181]

Description: scheduling issue during removal of large Lustre files

Details: Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels. It causes scheduling issues when removing large files (17TB in the present case).

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13358 13358]

Description: 1.4.11 Can't handle directories with stripe set and extended ACLs

Details: Impossible (EPROTO is returned) to access a directory that has a non-default striping and ACLs.

*Severity: normal

Frequency: only on ppc

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12234 12234]

Description: /proc/fs/lustre/devices broken on ppc

Details: The patch as applied to 1.6.2 doesn't look correct for all arches. We should make sure the type of 'index' is loff_t and then cast explicitly as needed below. Do not assign an explicitly cast loff_t to an int.

*Severity: normal

Frequency: only for rhel5

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13616 13616]

Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.

Details: Modify the target file & which_kernel.

*Severity: normal

Frequency: if the uninit_groups feature is enabled on ldiskfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13706 13706]

Description: e2fsck reports "invalid unused inodes count"

Details: If a new ldiskfs filesystem is created with the "uninit_groups" feature and only a single inode is created in a group then the "bg_unused_inodes" count is incorrectly updated. Creating a second inode in that group would update it correctly.

*Severity: normal

Frequency: only if filesystem is inconsistent

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11673 11673]

Description: handle "serious error: objid * already exists" more gracefully

Details: If LAST_ID value on disk is smaller than the objects existing in the O/0/d* directories, it indicates disk corruption and causes an LBUG(). If the object is 0-length, then we should use the existing object. This will help to avoid a full fsck in most cases.

*Severity: normal

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13570 13570]

Description: To avoid grant space > avaible space when the disk is almost full. Without this patch you might see the error "grant XXXX > available" or some LBUG about grant, when the disk is almost full.

Details: In filter_check_grant, for non_grant cache write, we should check the left space by if (*left > ungranted + bytes), instead of (*left > ungranted), because only we are sure the left space is enough for another "bytes", then the ungrant space should be increase. In client, we should update cl_avail_grant only there is OBD_MD_FLGRANT in the reply.

*Severity: normal

Frequency: when using O_DIRECT and quotas

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13930 13930]

Description: Incorrect file ownership on O_DIRECT output files

Details: block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: disable checksums by default since it impacts single node performance. It is still possible to enable checksums by default via "configure --enable-checksum", or at runtime via procfs.

*Severity: minor

Frequency: when lov objid is destroyed

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14222 14222]

Description: mds can't recreate lov objid file.

Details: if lov objid file is destroyed and ost with highest index connected first mds not get last objid number from ost. Also if mds get last id from ost his not tell osc about this and it's produce warning about wrong del orphan request.

*Severity: minor

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12948 12948]

Description: buffer overruns could theoretically occur

Details: llapi_semantic_traverse() modifies the "path" argument by appending values to the end of the origin string, and a buffer overrun may occur. Adding buffer overrun check in liblustreapi.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13732 13732]

Description: change order of libsysio includes

Details: '#include sysio.h' should always come before '#include xtio.h'

=Changes from v1.6.2 to v1.6.3=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12192 12192]

Description: llapi_file_create() does not allow some changes

Details: add llapi_file_open() that allows specifying the file creation mode and open flags, and also returns an open file handle.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12743 12743]

Description: df doesn't work properly if diskfs blocksize != 4K

Details: Choose biggest blocksize of OST's as the LOV's blocksize.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: merge and cleanup kernel patches.

Details: Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Kernel config file for RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12446 12446]

Description: OSS needs mutliple precreate threads

Details: Add ability to start more than one create thread per OSS.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Modify the kernel config file more closer RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Define PAGE_SIZE when it isn't present.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11401 11401]

Description: client-side metadata stat-ahead during readdir(directory readahead)

Details: perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11230 11230]

Description: Tune the kernel for good SCSI performance.

Details: Set the value of /sys/block/{dev}/queue/max_sectors_kb to the value of /sys/block/{dev}/queue/max_hw_sectors_kb in mount_lustre.

*Severity: critical

Frequency: Always for filesystems larger than 2TB on 32-bit systems.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13547 13547] , [https://bugzilla.lustre.org/show_bug.cgi?id=13627 13627]

Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers.

Details: When generating the bio request for lustre file writes the sector number would overflow a temporary variable before being used for the IO. The data reads correctly from Lustre (which will overflow in a similar manner) but other file data or filesystem metadata may be corrupted in some cases.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13236 13236]

Description: TOE Kernel panic by ksocklnd

Details: offloaded sockets provide their own implementation of sendpage, can't call tcp_sendpage() directly

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13482 13482]

Description: build error

Details: fix typos in gmlnd, ptllnd and viblnd

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12932 12932]

Description: obd_health_check_timeout too short

Details: set obd_health_check_timeout as 1.5x of obd_timeout

*Severity: major

Frequency: only with quota on the root user

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12223 12223]

Description: mds_obd_create error creating tmp object

Details: When the user sets quota on root, llog will be affected and can't create files and write files.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12782 12782]

Description: /proc/sys/lnet has non-sysctl entries

Details: Updating dump_kernel/daemon_file/debug_mb to use sysctl variables

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10778 10778]

Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs

Details: races between lnd_shutdown and peer creation prevent lnd_shutdown from finishing.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13279 13279]

Description: open files rlimit 1024 reached while liblustre testing

Details: ulnds/socklnd must close open socket after unsuccessful 'say hello' attempt.

*Severity: normal

Frequency: always on directories with default striping set

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12836 12836]

Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()

Details: Avoid lov_verify_lmm_common() on directory with -1 stripe count.

*Severity: normal

Frequency: Always on ia64 patchless client, and possibly others.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12826 12826]

Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.

Details: This allows the patchless client to be loaded on architectures without this export.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13142 13142]

Description: disorder of journal start and llog_add cause deadlock.

Details: in llog_origin_connect, journal start should happen before llog_add keep the same order as other functions to avoid the deadlock.

*Severity: normal

Frequency: occasionally when using NFS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13030 13030]

Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs

Details: with NFS, the anon dentry's parent was set to itself in d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the corresponding dentry other than use rec->ur_name.

*Severity: normal

Frequency: Occasionally with failover

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12459 12459]

Description: Client eviction due to failover config

Details: after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections.

*Severity: normal

Frequency: only with liblustre clients on XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12418 12418]

Description: evictions taking too long

Details: allow llrd to evict clients directly on OSTs

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13125 13125]

Description: osts not allocated evenly to files

Details: change the condition to increase offset_idx

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13436 13436]

Description: Only those disconnect error should be returned by rq_status.

Details: In open/enqueue processs, Some errors, which will cause client disconnected, should be returned by rq_status, while other errors should still be returned by intent, then mdc or llite will detect them.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13600 13600]

Description: "lfs find -obd UUID" prints directories

Details: "lfs find -obd UUID" will return all directory names instead of just file names. It is incorrect because the directories do not reside on the OSTs.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13596 13596]

Description: MDS hang after unclean shutdown of lots of clients

Details: Never resend AST requests.

*Severity: normal

Frequency: Always, for kernels after 2.6.16

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13304 13304]

Description: Fix warning idr_remove called for id=.. which is not allocated.
Details: Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12186 12186]

Description: Fix errors in lfs documentation

Details: Fixes man pages

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly.

Details: void sending multiple quota reqs to mds, which will keep the status between the reqs.

*Severity: cleanup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13532 13532]

Description: rewrite ext2-derived code in llite/dir.c and obdclass/uuid.c

Details: rewrite inherited code (uuid parsing code from ext2 utils and readdir code from ext3) from scratch preserving functionality.

=Changes from v1.6.1 to v1.6.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?
title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12786 12786]

Description: lfs setstripe enhancement

Details: Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12211 12211]

Description: randomly memory allocation failure util

Details: Make lustre randomly failed allocating memory for testing purpose.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10786 10786]

Description: omit set fsid for export NFS

Details: fix set/restore device id for avoid EMFILE error and mark lustre fs as FS_REQUIRES_DEV for avoid problems with generate fsid.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10595 10595]

Description: Error message improvement.

Details: Merging of two LCONSOLE_ERROR_MSG into one.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12602 12606]

Description: don't use GFP_* in generic Lustre code.

Details: Use cfs_alloc_* functions and CFS_* flags for code portability.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12333 12333]

Description: obdclass is limited by single OBD_ALLOC(idarray)

Details: replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415 ]

Description: updated patchess for new RHEL4 kernel

Details: Fixed ext3-unlink-race.patch per Kalpak's comment.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13006 13006 ]

Description: warnings with build patchless client with vanila 2.6.19 and up

Details: change old ctl_table style and replace ctl_table/ctl_table_header with cfs_sysctl_table_t/cfs_sysctl_table_header_t

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13093 13093]

Description: O_DIRECT bypasses client statistics.

Details: When running with O_DIRECT I/O, neither the client rpc_stats nor read_ahead_stats were updated. Copied stats section from osc_send_oap_rpc() into async_internal().

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13249 13249]

Description: Kernel patches for SLES9 2.6.5-7.286 kernel

Details: Update target/ChangeLog/which_patch .

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12955 12955]

Description: jbd statistics

Details: Port older jbd statistics patch for sles10

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Use getpagesize() instead of PAGE_SIZE.

*Severity: major

Frequency: after network failures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12769 12769]

Description: Add sync option to mount_lustre.c

Details: Client loses data written to lustre after a network interruption.

*Severity: normal

Frequency: mds/oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog ctxt is refrenced after it has been freed.

Details: llog ctxt refcount was added to avoide the race between ctxt free and llog recovery process. Each llog user must hold ctxt refcount before it access the llog. And the llog ctxt can only be freed when its refcount is zero.

*Severity: normal

Frequency: only for SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update kernel patch for SLES10 SP1

Details: Add patch blkdev_tunables-2.6-sles10.patch to 2.6-sles10.series.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11802 11802]

Description: lustre support for RHEL5

Details: Add support for RHEL5.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11756 11756]

Description: umount blocks forever on error

Details: In result of wrong using obd_no_recov and obd_force flags client can hand if cancel or some other requests is lost.

*Severity: normal

Frequency: Only for SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13177 13177]

Description: sanity_quota fail test_1

Details: There are multiple occurences of $TSTUSR in SLES's /etc/group file, which makes TSTID[2] inunique.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9977 9977]

Description: lvbo_init failed for resource with missing objects.

Details: Fix returning error if we do stat for file with missing/corrupted objects and i_size set to all sum of size of all avaible objects. if we to truncate/write to missing object - it is recreated.

*Severity: normal

Frequency: When flocks are used.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13103 13103]

Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.

Details: Flock locks might destroy just granted lock if it could be merged with another existing flock, this is done in completion handler, so teach ldlm_cli_enquque_fini that this is a valid case for flock locks.

*Severity: normal

Frequency: Rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11974 11974]

Description: reply_lock_interpret crash due to race with it and lock cancel.

Details: Do not replay locks that are being cancelled. Do not reference locks by their address during replay, just by their handle.

*Severity: normal

Frequency: only with deactivated OSTs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11679 11679]

Description: lstripe command fails for valid OST index

Details: The stripe offset is compared to 'lov->desc.ld_tgt_count' instead of lov->desc.ld_active_tgt_count.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13147 13147]

Description: block reactivating mgc import until all deactivates complete

Details: Fix race when failing back MDT/MGS to itself (testing)

*Severity: minor

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: peer credits not enough on many OST per OSS systems.

Details: Use new lnet way to add credits as we need those for pings and ASTs

*Severity: minor

Frequency: only with liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12790 12790]

Description: Liblustre is not releasing flock locks on file close.

Details: Release flock locks on file close.

*Severity: minor

Frequency: only for RHEL4

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12839 12839]

Description: Update kernel patches for kernel-2.6.9-55.0.2.EL

Details: Remove inode-nr_unused-2.6.9-rhel4.patch from 2.6-rhel4.series Update target file and kernel config.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11327 11327 ]

Description: ASSERTION(export != NULL) failed in target_handle_connect

Details: Assetion hit is result of rare race between disconnect and connet to same nid. target_handle_connect found old connect cockie and tried to reconnect, but can't find export for this cockie.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13276 13276]

Description: Oops in read and write path when failing to allocate lock.

Details: Check if lock allocation failed and return error back.

=Changes from v1.6.0.1 to v1.6.1=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.283 (SLES 9), 2.6.9-55.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.
Starting with this release, the ldiskfs backing filesystem required by Lustre is now in its own package, lustre-ldiskfs. This package should be installed. It is versioned separately from Lustre and may be released separately in future.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12194 12194]

Description: add optional extra BUILD_VERSION info

Details: add a new environment variable (namely LUSTRE_VERS) which allows to override the lustre version.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11548 11548]

Description: Add LNET router traceability for debug purposes

Details: If a checksum failure occurs with a router as part of the IO path, the NID of the last router that forwarded the bulk data is printed so it can be identified.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10997 10997]

Description: lfs setstripe use optional parameters instead of postional parameters.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10651 10651]

Description: Nanosecond timestamp support for ldiskfs

Details: The on-disk ldiskfs filesystem has added support for nanosecond resolution timestamps. There is not yet support for this at the Lustre filesystem level.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10768 10768]

Description: 64-bit inode version

Details: : Add a on-disk 64-bit inode version for ext3 to track changes made to the inode. This will be required for version-based recovery.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11563 11563]

Description: Add -o localflock option to simulate old noflock behaviour.

Details: This will achieve local-only flock/fcntl locks coherentness.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11647 11647]

Description: update patchless client

Details: Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10589 10589]

Description: metadata RPC reduction (e.g. for rm performance)

Details: decrease the amount of synchronous RPC between clients and servers by canceling conflicing lock before the operation on the client and packing thier handles into the main operation RPC to server.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12605 12605]

Description: add #ifdef HAVE_KERNEL_CONFIG_H

Details: kernels from 2.6.19 not need include linux/config.h, but add include linux/autoconf.h in commpiler command line.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12764 12764]

Description: patchless client support for 2.6.22 kernel

Details: 2.6.22 has only one visble change, SLAB_CTOR_* constants is removed. In this case we need drop using os depended interface to kmem_cache and use cfs_mem_cache API.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats tool.

Details: Tool which collects stats by tracking value written in pid, ppid, gid and uses llstat to generate output to plot graph using plot-llstat Updated lustre/utils/Makefile.am Added lustre/utils/ltrack_stats.c

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11039 11039]

Description: 2.6.18 server support (lustre 1.6.1)

Details: Support for 2.6.18 kernels on the server side.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12678 12678]

Description: remove fs_prep_san_write operation and related patches

Details: remove the ext3-san-jdike patches which are no longer useful.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11721 11721]

Description: Add printing inode info into message about error in writepage.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11971 11971]

Description: Accessing a block bevice can re-enable I/O when Lustre is tearing down a device.

Details: dev_clear_rdonly(bdev) must be called in kill_bdev() instead of blkdev_put().

*Severity: major

Frequency: only with mballoc3 code and deep extent trees

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12861 12861]

Description: ldiskfs_ext_search_right: bad header in inode: unexpected eh_depth

Details: a wrong check of extent headers in ldiskfs_ext_search_right() can cause the filesystem to be remounted read-only.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13129 13129]

Description: server LBUG when shutting down

Details: Block umount forever until the mount refcount is zero rather than giving up after an arbitrary timeout.

*Severity: normal

Frequency: 2.6.18 servers only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12546 12546 ]

Description: ll_kern_mount() doesn't release the module reference

Details: The ldiskfs module reference count never drops down to 0 because ll_kern_mount() doesn't release the module reference.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12470 12470]

Description: server LBUG when using old ost_num_threads parameter

Details: Accept the old ost_num_threads parameter but warn that it is deprecated, and fix an off-by-one error that caused an LBUG.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11722 11722]

Description: Transient SCSI error results in persistent IO issue

Details: iobuf->dr_error is not reinitialized to 0 between two uses.

*Severity: normal

Frequency: sometimes when underlying device returns I/O errors

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11743 11743]

Description: OSTs not going read-only during write failures

Details: OSTs are not remounted read-only when the journal commit threads get I/O errors because fsfilt_ext3 calls journal_start/stop() instead of the ext3 wrappers.

*Severity: normal

Frequency: SLES10 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12538 12538]

Description: sanity-quota.sh quotacheck failed: rc = -22

Details: Quotas cannot be enabled on SLES10.

*Severity: normal

Frequency: liblustre clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12229 12229]

Description: getdirentries does not give error when run on compute nodes

Details: getdirentries does not fail when the size specified as an argument is too small to contain at least one entry

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11315 11315]

Description: OST "spontaneously" evicts client; client has imp_pingable == 0

Details: Due to a race condition, liblustre clients were occasionally evicted incorrectly.

*Severity: normal

Frequency: during server recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11203 11203]

Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING

Details: request with rq_no_resend flag not awake l_wait_event if they get a timeout.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11818 11818]

Description: MDS fails to start if a duplicate client export is detected

Details: in some rare cases it was possible for a client to connect to an MDS multiple times. Upon recovery the MDS would detect this and fail during startup. Handle this more gracefully.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12477 12477]

Description: Wrong request locking in request set processing

Details: ptlrpc_check_set wrongly uses req->rq_lock for proctect add to imp_delayed_list, in this place should be used imp_lock.

*Severity: normal

Frequency: when reconnecting

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC reconnect to OST

Details: When osc reconnect ost, OST(filter) should check whether it should grant more space to client by comparing fed_grant and cl_avail_grant, and return the granted space to client instead of "new granted" space, because client will call osc_init_grant to update the client grant space info.

*Severity: normal

Frequency: when client reconnects to OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC does a resend and replays bulk write

Details: When osc reconnect to OST, OST(filter) should clear grant info of bulk write request, because the grant info while be sync between OSC and OST when reconnect, and we should ignore the grant info these of resend/replay write req.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant space more than avaiable space sometimes.

Details: When then OST is about to be full, if two bulk writing from different clients came to OST. Accord the avaliable space of the OST, the first req should be permitted, and the second one should be denied by ENOSPC. But if the seconde arrived before the first one is commited. The OST might wrongly permit second writing, which will cause grant space > avaiable space.

*Severity: normal

Frequency: when client is evicted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12371 12371]

Description: Grant might be wrongly erased when osc is evicted by OST

Details: when the import is evicted by server, it will fork another thread ptlrpc_invalidate_import_thread to invalidate the import, where the grant will be set to 0. While the original thread will update the grant it got when connecting. So if the former happened latter, the grant will be wrongly errased because of this race.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12401 12401]

Description: Checking Stale with correct fid

Details: ll_revalidate_it should uses de_inode instead of op_data.fid2 to check whether it is stale, because sometimes, we want the enqueue happened anyway, and op_data.fid2 will not be initialized.

*Severity: normal

Frequency: only with 2.4 kernel

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12134 12134]

Description: random memory corruption

Details: size of struct ll_inode_info is to big for union inode.u and this can be cause of random memory corruption.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10818 10818]

Description: Memory leak in recovery

Details: Lov_mds_md was not free in an error handler in mds_create_object. It should also check obd_fail before fsfilt_start, otherwise if fsfilt_start return -EROFS,(failover mds during mds recovery). then the req will return with repmsg->transno = 0 and rc = EROFS. and we met hit the assert LASSERT(req->rq_reqmsg->transno == req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should be freed no matter whether fsfilt_commit success or not.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11935 11935]

Description: Not check open intent error before release open handle

Details: in some rare cases, the open intent error is not checked before release open handle, which may cause ASSERTION(open_req->rq_transno != 0), because it tries to release the failed open handle.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12556 12556]

Description: Set cat log bitmap only after create log success.

Details: in some rare cases, the cat log bitmap is set too early. and it should be set only after create log success.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12086 12086]

Description: the cat log was not initialized in recovery

Details: When mds(mgs) do recovery, the tgt_count might be zero, so the unlink log on mds will not be initialized until mds post recovery. And also in mds post recovery, the unlink log will initialization will be done asynchronausly, so there will be race between add unlink log and unlink log initialization.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12579 12597]

Description: brw_stats were being printed incorrectly

Details: brw_stats were being printed as log2 but all of them were not recorded as log2. Also remove some code duplication arising from filter_tally_{read,write}.

*Severity: normal

Frequency: rare, only in recovery.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11674 11674]

Description: ASSERTION(req->rq_type != LI_POISON) failed

Details: imp_lock should be held while iterating over imp_sending_list for prevent destroy request after get timeout in ptlrpc_queue_wait.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12689 12689]

Description: replay-single.sh test 52 fails

Details: A lock's skiplist need to be cleanup when it being unlinked from its resource list.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: Short directio read returns full requested size rather than
actual amount read.

Details: Direct I/O operations should return actual amount of bytes transferred rather than requested size.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12646 12646]

Description: sanity.sh test_77h fails with "test_77h file compare failed"

Details: test_77h uses a file which was messed by other test case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12576 12576]

Description: Not Check whether lov_tgts is NULL in some lov functions

Details: Checking whether lov_tgts is NULL in some functions.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11815 11815]

Description: replace obdo_alloc() with OBDO_ALLOC macro

Details: nothing special is done in obdo_alloc() function, and for debugging purpose, it needs to be replaced with macros.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12784 12784]

Description: bad return value and errno from fcntl call

Details: In liblustre API, errno should be a negative value if error happens.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11544 11544]

Description: ptlrpc_check_set() LBUG

Details: In case of positive reply from server and failed client bulk callback after bulk transfer shouldn't LBUG, but process this request as erroneous.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12696 12696]

Description: ASSERTION(imp->imp_conn_current) failed

Details: an assertion failure is hit if a client node boots and attempts to mount a lustre filesystem faster than RECONNECT_INTERVAL seconds.

*Severity: normal

Frequency: only for i686

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12695 12695]

Description: 1.4.11 RC1 build fails for RHEL 4, i686

Details: Fixed config variable for build.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: Updated patchess for new RHEL4 kernel

Details: Updated patch inode-nr_unused-2.6.9-rhel4.patch Updated patch jbd-stats-2.6.9.patch Updated patch qsnet-rhel4-2.6.patch Updated patch quota-deadlock-on-pagelock-core.patch Updated patch vfs_intent-2.6-rhel4.patch Updated patch vfs_races-2.6-rhel4.patch Updated series file 2.6-rhel4-titech.series Updated series file 2.6-rhel4.series Updated kernel config files

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12374 12374]

Description: lquota slave complains LBUG when reconnecting with mds or
failover in mds.

Details: quota slave depends qctxt->lqc_import to send its quota request. This pointer will be invalid if mds did failover or broke its connect to osts, which leads to LBUG.

*Severity: normal

Frequency: when qunit size is too small(less than 20M)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: write is stopped by improper -EDQUOT

Details: If the master is busy and qunit size is small enough(let's say 1M), the slave can not get quota from master on time, which will lead slave to trigger a -EQUOTA to client.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12629 12629]

Description: Deadlock during metadata tests

Details: in prune_dir_dentries(), shrink_dcache_parent() should not be called with the per-dentry lock held.

*Severity: normal

Frequency: SLES9 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12744 12744]

Description: Lustre patched kernel for SLES9 SP3 has NR_CPUS set to 8

Details: set CONFIG_NR_CPUS to 128 instead of 8.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11324 11324]

Description: LDISKFS-fs error (device sdc): ldiskfs_free_blocks

Details: a disk corruption can cause the mballoc code to assert on a double free or other extent corruptions. Handle these with ext3_error() instead of assertions.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13063 13063]

Description: lfsck built against 1.4.x cannot run against 1.6.0 lustre

Details: the definition for OBD_IOC_GETNAME changed in 1.6.0. One of the few external users of this ioctl number is lfsck's call to llapi_lov_get_uuids() and this caused lfsck to fail at startup. Add the old ioctl number to the handler so both old and new lfsck can work.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11301 11301]

Description: parallel lock callbacks

Details: Instead of sending blocking and completion callbacks as separated requests, adding them to a set and sending in parallel.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12417 12417]

Description: Disable most debugging by default

Details: To improve performance, disable most logging (for debug purposes) by default. VFSTRACE, RPCTRACE, and DLMTRACE are now off by default, and HA includes fewer messages.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11013 11013]

Description: hash tables for lists of nids, connections and uuids

Details: Hash tables noticeably help when a lot of clients connect to a server, to faster identify duplicate connections or reconnects, also to faster find export to evict in manual eviction case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11190 11190]

Description: Sometimes, when the server evict a client, and the client will not be evicted as soon as possible.

Details: In enqueue req, the error was returned by intent, instead of rq_status which make ptlrpc layer not detect this error, and does not evict the client. So enqueue error should be returned by rq_status.

*Severity: normal

Frequency: only for SLES9

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-suse-2.6.patch.

*Severity: normal

Frequency: only for sles10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update patches for SLES 10 SP1 kernel.

Details: Update the patch vfs_intent-2.6-sles10.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-rhel4-2.6.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12975 12975]

Description: Using wrong pointer in osc_brw_prep_request

Details: Access to array[-1] can produce panic if kernel compiled with CONFIG_PAGE_ALLOC enabled

*Severity: normal

Frequency: only in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13148 13148]

Description: Mark OST as early accessible if his start SYNC.

Details: osc_precreate return flag early accessible if oscc marked as OSCC_FLAG_SYNC_IN_PROGRESS.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Sometimes precreate code can triger create object on wrong ost

Details: Wrong protected or not not restored variables aftre precreate loop can produce creation object on wrong ost.

*Severity: normal

Frequency: oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog_commit_thread cleanup should sync with llog_commit_thread
start

Details: llog_commit_thread_count should be synced between llog_commit start and cleanup, so new llog_commit thread should not be started when llog_commit threads being stopped to avoid accessing some freed stuff.

*Severity: minor

Frequency: only with 10000 clients or more

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12364 12364]

Description: poor connect scaling with increasing client count

Details: Don't run filter_grant_sanity_check for more than 100 exports to improve scaling for large numbers of clients.

*Severity: minor

Frequency: nfs export on patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11970 11970]

Description: connectathon hang when test nfs export over patchless client

Details: Disconnected dentry cannot be found with lookup, so we do not need to unhash it or make it invalid

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11546 11546]

Description: open req refcounting wrong on reconnect

Details: If reconnect happened between getting open reply from server and call to mdc_set_replay_data in ll_file_open, we will schedule replay for unreferenced request that we are about to free. Subsequent close will crash in variety of ways. Check that request is still eligible for replay in mdc_set_replay_data().

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11512 11512]

Description: disable writes to filesystem when reading health_check file

Details: the default for reading the health_check proc file has changed to NOT do a journal transaction and write to disk, because this can cause reads of the /proc file to hang and block HA state checking on a healthy but otherwise heavily loaded system. It is possible to return to the previous behaviour during configure with --enable-health-write.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11658 11658 ]

Description: log_commit_thread vs filter_destroy race leads to crash

Details: Take import reference before releasing llog record semaphore

*Severity: minor

Frequency: only with huge numbers of clients

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11817 11817]

Description: Prevents from taking the superblock lock in llap_from_page for a soon died page.

Details: using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW for llap_from_page call in ll_removepage() prevents from taking the superblock lock for a soon died page.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: service threads may hog cpus when there are a lot of requests

Details: Insert cond_resched to give other threads a chance to use some CPU

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12747 12747]

Description: fix mal-formatted messages

Details: fix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages

*Severity: minor

Frequency: always in liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: wrong IS_ERR implementation in liblustre.h

Details: fix IS_ERR implementation in liblustre.h for right detect errors.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10419 10419]

Description: Correct condition for output debug message.

Details: inode i_nlink equal zero is not enough for output message about disk corruption, i_ctime and i_mode should be also checked.

*Severity: minor

Frequency: always in patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: add configure check for truncate_complete_page

Details: improve checks for exported symbols. This allow run check without
sources, but with Module.symvers shipped with kernel distribution. add check for truncate_complete_page used by patchless client.

*Severity: minor

Frequency: only run on patchless client.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12858 12858]

Description: use do_facet on sanity.sh for test handling recoverables errors

Details: use do_facet instead of direct use sysctl for set fail_loc on OST

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11778 11778]

Description: Delay client connections to MDT until fist MDT->OST connect

Details: If a client tried to create a new file before the MDT had connected to any OSTs, the create would return EIO. Now the client will simply block until the MDT connects to the first OST and the create can succeed.

*Severity: minor

Frequency: at statup only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12860 12860]

Description: mds_lov_synchronize race leads to various problems

Details: simultaneous MDT->OST connections at startup can cause the sync to abort, leaving the OSC in a bad state.

=Changes from v1.6.0 to v1.6.0.1=

*Severity: normal

Frequency: on some architectures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12404 12404]

Description: 1.6 client sometimes fails to mount from a 1.4 MDT

Details: Uninitialized flags sometimes cause configuration commands to be skipped.

*Severity: normal

Frequency: patchless clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12391 12391]

Description: missing __iget() symbol export

Details: The __iget() symbol export is missing. To avoid the need for this on patchless clients the deathrow inode reaper is turned off, and we depend on the VM to clean up old inodes. This dependency was during via the fix for bug 12181.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12848 12848]

Description: sanity.sh fail: test_52b

Details: The ll_inode_to_ext_flags() has a glitch which makes MDS return incorrect inode's flags to client.

=Changes from v1.4.10 to v1.6.0=

'''CONFIGURATION CHANGE. This version of Lustre WILL NOT INTEROPERATE with older versions automatically. In many cases a special upgrade step is needed. Please read the user documentation before upgrading any part of a 1.4.x system.'''

'''WARNING: Lustre configuration and startup changes are required with this release. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.'''

'''Support for kernels: 2.4.21-47.0.1.EL (RHEL 3), 2.6.5-7.283 (SLES 9), 2.6.9-42.0.10.EL (RHEL 4), 2.6.12.6 vanilla (kernel.org), 2.6.16.27-0.9 (SLES10)'''

'''Client support for unpatched kernels: (see https://mail.clusterfs.com/wikis/lustre/PatchlessClient) 2.6.16 - 2.6.19 vanilla (kernel.org), 2.6.9-42.0.8EL (RHEL 4)'''

'''Recommended e2fsprogs version: 1.39.cfs6'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=8007 8007]

Description: MountConf

Details: Lustre configuration is now managed via mkfs and mount commands instead of lmc and lconf. New obd types (MGS, MGC) are added for dynamic configuration management. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4482 4482]

Description: dynamic OST addition

Details: OSTs can now be added to a live filesystem

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9851 9851]

Description: startup order invariance

Details: MDTs and OSTs can be started in any order. Clients only require the MDT to complete startup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4899 4899]

Description: parallel, asynchronous orphan cleanup

Details: orphan cleanup is now performed in separate threads for each OST, allowing parallel non-blocking operation.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9862 9862]

Description: optimized stripe assignment

Details: stripe assignments are now made based on ost space available, ost previous usage, and OSS previous usage, in order to try to optimize storage space and networking resources.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4226 4226]

Description: Permanently set tunables

Details: All writable /proc/fs/lustre tunables can now be permanently set on a per-server basis, at mkfs time or on a live system.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10547 10547]

Description: Lustre message v2

Details: Add lustre message format v2.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9866 9866]

Description: client OST exclusion list

Details: Clients can be started with a list of OSTs that should be declared "inactive" for known non-responsive OSTs.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10088 10088]

Description: fine-grained SMP locking inside DLM

Details: Improve DLM performance on SMP systems by removing the single per-namespace lock and replace it with per-resource locks.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9332 9332]

Description: don't hold multiple extent locks at one time

Details: To avoid client eviction during large writes, locks are not held on multiple stripes at one time or for very large writes. Otherwise, clients can block waiting for a lock on a failed OST while holding locks on other OSTs and be evicted.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9293 9293]

Description: Multiple MD RPCs in flight.

Details: Further unserialise some read-only MDT RPCs - learn about intents. To avoid overly-overloading MDT, introduce a limit on number of MDT RPCs in flight for a single client and add /proc controls to adjust this limit.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22484 22484]

Description: client read/write statistics

Details: Add client read/write call usage stats for performance analysis of user processes. /proc/fs/lustre/llite/*/offset_stats shows non-sequential file access. extents_stats shows chunk size distribution. extents_stats_per_process show chunk size distribution per user process.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22485 22485]

Description: per-client statistics on server

Details: Add ldlm and operations statistics for each client in /proc/fs/lustre/mds|obdfilter/*/exports/

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22486 22486]

Description: improved MDT statistics

Details: Add detailed MDT operations statistics in /proc/fs/lustre/mds/*/stats

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats

Details: Add client VFS call stats, trackable by pid, ppid, or gid /proc/fs/lustre/llite/*/stats_track_[pid|ppid|gid]

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2258 2258]

Description: Dynamic service threads

Details: Within a small range, start extra service threads automatically when the request queue builds up.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11229 11229]

Description: Easy OST removal

Details: OSTs can be permanently deactivated with e.g. 'lctl conf_param lustre-OST0001.osc.active=0'

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11335 11335]

Description: MGS proc entries

Details: Added basic proc entries for the MGS showing what filesystems are served.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10998 10998]

Description: provide MGS failover

Details: Added config lock reacquisition after MGS server failover.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11461 11461]

Description: add Linux 2.4 support

Details: Added support for RHEL 2.4.21 kernel for 1.6 servers and clients

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10902 10902]

Description: plain/inodebits lock performance improvement

Details: Grouping plain/inodebits in granted list by their request modes and bits policy, thus improving the performance of search through the granted list.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11667 11667]

Description: Add "/proc/sys/lustre/debug_peer_on_timeout"

Details: liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT boolean to control whether to print peer debug info when a client's RPC times out.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11264 11264]

Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck

Details: The uninit_groups feature works in conjunction with the kernel filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed up the pass1 processing of e2fsck. This is a read-only feature in ldiskfs2 only, so older kernels and current ldiskfs cannot mount filesystems that have had this feature enabled.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10816 10816]

Description: Improve multi-block allocation algorithm to avoid fragmentation

Details: The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve allocation locality and avoid filesystem fragmentation.

*Severity: major

Frequency: mixed-endian client/server environments

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11214 11214]

Description: mixed-endian crashes

Details: The new msg_v2 system had some failures in mixed-endian environments.

*Severity: major

Frequency: when an incorrect nid is specified during startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10734 10734]

Description: ptlrpc connect to non-existant node causes kernel crash

Details: LNET can't be re-entered from an event callback, which happened when we expire a message after the export has been cleaned up. Instead, hand the zombie cleanup off to another thread.

*Severity: major

Frequency: only if OST filesystem is corrupted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9829 9829]

Description: client incorrectly hits assertion in ptlrpc_replay_req()

Details: for a short time RPCs with bulk IO are in the replay list, but replay of bulk IOs is unimplemented. If the OST filesystem is corrupted due to disk cache incoherency and then replay is started it is possible to trip an assertion. Avoid putting committed RPCs into the replay list at all to avoid this issue.

*Severity: major

Frequency: liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: System hang on startup

Details: This bug allowed the liblustre (e.g. catamount) client to return to the app before handling all startup RPCs. This could leave the node unresponsive to lustre network traffic and manifested as a server ptllnd timeout.

*Severity: major

Frequency: only for devices with external journals

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10719 10719]

Description: Set external device read-only also

Details: During a commanded failover stop, we set the disk device read-only while the server shuts down. We now also set any external journal device read-only at the same time.

*Severity: major

Frequency: when setting specific ost indicies

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11149 11149]

Description: QOS code breaks on skipped indicies

Details: Add checks for missing OST indicies in the QOS code, so OSTs created with --index need not be sequential.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12123 12123]

Description: ENOENT returned for valid filehandle during dbench.

Details: Check if a directory has children when invalidating dentries associated with an inode during lock cancellation. This fixes an incorrect ENOENT sometimes seen for valid filehandles during testing with dbench.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11330 11330]

Description: a large application tries to do I/O to the same resource and dies in the middle of it.

Details: Check the req->rq_arrival time after the call to ost_brw_lock_get(), but before we do anything about processing it & sending the BULK transfer request. This should help move old stale pending locks off the queue as quickly as obd_timeout.

*Severity: minor

Frequency: SFS test only (otherwise harmless)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6062 6062]

Description: SPEC SFS validation failure on NFS v2 over lustre.

Details: Changes the blocksize for regular files to be 2x RPC size, and not depend on stripe size.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6380 6380]

Description: Fix client-side osc byte counters

Details: The osc read/write byte counters in /proc/fs/lustre/osc/*/stats are now working

*Severity: minor

Frequency: always as root on SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10667 10667]

Description: Failure of copying files with lustre special EAs.

Details: Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov").

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10345 10345]

Description: Refcount LNET uuids

Details: The global LNET uuid list grew linearly with every startup; refcount repeated list entries instead of always adding to the list.

*Severity: minor

Frequency: only for kernels with patches from Lustre below 1.4.3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: Remove old rdonly API

Details: Remove old rdonly API which unused from at least lustre 1.4.3

*Severity: minor

Frequency: when upgrading from 1.4 while trying to change parameters

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11692 11692]

Description: The wrong (new) MDC name was used when setting parameters for upgraded MDT's. Also allows changing of OSC (and MDC) parameters if --writeconf is specified at tunefs upgrade time.

=Changes from v1.6.0 to v1.4.11=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12014 12014]

Description: ASSERTION failures when upgrading to the patchless zero-copy socklnd

Details: This bug affects "rolling upgrades", causing an inconsistent protocol version negotiation and subsequent assertion failure during rolling upgrades after the first wave of upgrades.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10916 10916]

Description: added LNET self test

Details: landing b_self_test

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12316 12316]

Description: Add OFED1.2 support to o2iblnd

Details: o2iblnd depends on OFED's modules, if out-tree OFED's modules are installed (other than kernel's in-tree infiniband), there could be some problem while insmod o2iblnd (mismatch CRC of ib_* symbols). If extra Module.symvers is supported in kernel (i.e, 2.6.17), this link provides solution: https://bugs.openfabrics.org/show_bug.cgi?id=355 if extra Module.symvers is not supported in kernel, we will have to run the script in bug 12316 to update $LINUX/module.symvers before building o2iblnd. More details about this are in bug 12316.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11680 11680]

Description: make panic on lbug configurable

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13288 13288]

Description: Initialize cpumask before use

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11223 11223]

Details: Change "dropped message" CERRORs to D_NETERROR so they are logged instead of creating "console chatter" when a lustre timeout races with normal RPC completion.

*Severity: minor

Details: lnet_clear_peer_table can wait forever if user forgets to clear a lazy portal.

*Severity: minor

Details: libcfs_id2str should check pid against LNET_PID_ANY.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12227 12227]

Description: cfs_duration_{u,n}sec() wrongly calculate nanosecond part of struct timeval.

Details: do_div() macro is used incorrectly.

=Changes from v1.4.9 to v1.6.0=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10316 10316]

Description: Fixed console chatter in case of -ETIMEDOUT.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: Added D_NETTRACE for recording network packet history (initially only for ptllnd). Also a separate userspace ptllnd facility to gather history which should really be covered by D_NETTRACE too, if only CDEBUG recorded history in userspace.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11094 11094]

Description: Multiple instances for o2iblnd

Details: Allow multiple instances of o2iblnd to enable networking over multiple HCAs and routing between them.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12458 12458]

Description: Assertion failure in kernel ptllnd caused by posting passive bulk buffers before connection establishment complete.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12455 12455]

Description: A race in kernel ptllnd between deleting a peer and posting new communications for it could hang communications - manifesting as "Unexpectedly long timeout" messages.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12432 12432]

Description: Kernel ptllnd lock ordering issue could hang a node.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12016 12016]

Description: node crash on socket teardown race

*Severity: major

Frequency: after Ptllnd timeouts and portals congestion

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11659 11659]

Description: Credit overflows

Details: This was a bug in ptllnd connection establishment. The fix implements better peer stamps to disambiguate connection establishment and ensure both peers enter the credit flow state machine consistently.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11394 11394]

Description: kptllnd didn't propagate some network errors up to LNET

Details: This bug was spotted while investigating 11394. The fix ensures network errors on sends and bulk transfers are propagated to LNET/lustre correctly.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11616 11616]

Description: o2iblnd handle early RDMA_CM_EVENT_DISCONNECTED.

Details: If the fabric is lossy, an RDMA_CM_EVENT_DISCONNECTED callback can occur before a connection has actually been established. This caused an assertion failure previously.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11201 11201]

Description: lnet deadlock in router_checker

Details: turned ksnd_connd_lock, ksnd_reaper_lock, and ksock_net_t:ksnd_lock into BH locks to eliminate potential deadlock caused by ksocknal_data_ready() preempting code holding these locks.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11126 11126]

Description: Millions of failed socklnd connection attempts cause a very slow FS

Details: added a new route flag ksnr_scheduled to distinguish from ksnr_connecting, so that a peer connection request is only turned down for race concerns when an active connection to the same peer is under progress (instead of just being scheduled).

*Severity: normal

Frequency: rare

Description: gmlnd ignored some transmit errors when finalizing lnet messages.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11472 11472]

Description: Changed the default kqswlnd ntxmsg=512

*Severity: minor

Frequency: rare

Description: Ptllnd didn't init kptllnd_data.kptl_idle_txs before it could be possibly accessed in kptllnd_shutdown. Ptllnd should init kptllnd_data.kptl_ptlid2str_lock before calling kptllnd_ptlid2str.

*Severity: minor

Frequency: rare

Description: ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.

*Severity: minor

Frequency: rare

Description: the_lnet.ln_finalizing was not set when the current thread is about to complete messages. It only affects multi-threaded user space LNet.

*Severity: minor

Frequency: 'lctl peer_list' issued on a mx net

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12237 12237]

Description: Enable lctl's peer_list for MXLND

=[http://wiki.lustre.org/index.php?title=Change_Log_1.4 Change logs for 1.4.x releases]=

Change Log 1.6

2009-06-10T01:39:48Z

Stinson1947: /* Changes from v1.6.6 to v1.6.7 */

=Changes from v1.6.7.1 to v1.6.7.2=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-78.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.37 (SLES 10)''' 
''' 2.6.18-92.1.26.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):'''
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19601 19601]'''
Severity: enhancement 
Description: Update kernel to RHEL5.2 2.6.18-92.1.26.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19453 19453]'''
Severity: critical, only with RHEL4/SLES9 MDS 
Description: user xattr corruption 
Details: setting extended attributes can corrupt other attributes stored in the inode body. Both user & lustre internal (LOV EA) attributes are concerned. In the latter case, the lustre filesystem can be damaged.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16504 16504]'''
Severity: enhancement 
Description: Update kernel to RHEL4.7 2.6.9-78.0.22.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18289 18289]'''
Severity: enhancement 
Description: allow the use of the kernel provided OFED stack 
Details: This patch allows for lbuild to use the OFED stack provided by the kernel vendor. For the RHEL4 and RHEL5 kernels, we enable the kernel supplied OFED stack.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18775 18775]'''
Severity: enhancement 
Description: improve lctl set/get_param 
Details: handle the bad options, support more than one arguments, add '-F' option to append the indicator to the parameters.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19212 19212]'''
Severity: enhancement 
Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19495 19495]'''
Severity: major 
Frequency: rare 
Description: fix lqs' reference which won't be put in some situations. 
Details: This patch fixes:
1. In quota_check_common(), this function will check quota
for user and group, but only send one return via "pending".
In most cases, the pendings should be same. But that is not
always the case.
2. If quotaoff runs between lquota_chkquota() and
lquota_pending_commit(), the same thing will happen too.
That is why it comes:
- if (!ll_sb_any_quota_active(qctxt->lqc_sb))
- RETURN(0);

=Changes from v1.6.7 to v1.6.7.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18810 18810]'''
Severity: major 
Frequency : rare 
Description: fix racy locking of mballoc block bitmaps causing BUG 
Details: The locking of the mballoc buddy bitmap and the in-memory block bitmap was using two different spin locks in some cases. This made it possible to incorrectly access the mballoc bitmap while another process was modifying it, causing a sanity assertion to fail. While no on-disk corruption was reported, there was some risk of this happening.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18480 18480]'''
Frequency: common 
Description: correct count of recoverable clients 
Details: if recovery failed for client for some reasons (goal inode or something else) server can wait failed clients for finish recovery.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18695 18695]'''
Severity: critical 
Frequency: when directories had atime set in past (e.g. untar) 
Descriptoin: Lustre detected file system corruption with inode out of bounds 
Details: don't update i_size on MDS_CLOSE for directories. This causes directory corruptions on the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18895 18895]'''
Severity: normal 
Frequency: on failed service startup 
Description: replay-single test_61d: LustreError: 17392:0:(lprocfs_status.c:859:lprocfs_obd_cleanup()) ASSERTION(obd->obd_proc_exports_entry->subdir == NULL) failed 
Details: cleanup lprocfs entries on error.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18903 18903]'''
Severity: normal 
Frequency: rare 
Description: llmount.sh: BUG: spinlock wrong owner on CPU#0, mount.lustre/8180 
Details: fix typo in import_set_conn() causing spinlock corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18859 18859]'''
Severity: normal 
Frequency: rare, only when using group lock on client 
Description: Group Lock in Lustre: write call is blocking 
Details: fix wrong return code of ll_is_file_contended() causing processes to be blocked indefinitely.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17757 17757]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(new_lock != NULL) failed:op 0x1 lockh 0x0 
Details: DISP_OPEN_LOCK is not cleared properly in reconstruct_open() since intent_disposition() is used instead of intent_set_disposition().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15428 15428]'''
Severity: major 
Frequency: occasional when using software RAID5 
Description: raid5 panics 
Details: fix panic in raid5_end_read_request().

=Changes from v1.6.6 to v1.6.7=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5. The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16498 16498]'''
Severity: normal 
Description: Get RAID stripe size from superblock 
Details: RAID striping parameters are now saved in the superblock itself, so we should use these parameters instead of having to specify a mount option each time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: major 
Description: Disable big-endian ldiskfs server support. 
Details: The ldiskfs code is not tested on big-endian machines, and there are known compatibility problems in the extents code when running for most of the kernels. Print an error message and refuse to mount, in case anyone tests this. For existing filesystems that might have been created in this way it is possible to mount with the "bigendian_extents" option to force the mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15983 15983]'''
Severity: major 
Description: workaround for OOM from o2iblnd 
Details: OFED needs allocate big chunk of memory for QP while creating connection for o2iblnd, OOM can happen if no such a contiguous memory chunk. QP size is decided by concurrent_sends and max_fragments of o2iblnd, now we permit user to specify smaller value for concurrent_sends of o2iblnd(i.e: concurrent_sends=7), which will decrease memory block size required by creating QP.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15093 15093]'''
Severity: major 
Description: Support Zerocopy receive of Chelsio device 
Details: Chelsio driver can support zerocopy for iov[1] if it's contiguous and large enough.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13490 13490]'''
Severity: normal 
Description: fix credit flow deadlock in uptllnd

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16308 16308]'''
Severity: normal 
Description: finalize network operation in reasonable time 
Details: conf-sanity test_32a couldn't stop ost and mds because it tried to access non-existent peer and tcp connect took quite long before timing out.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16338 16338]'''
Severity: major 
Description: Continuous recovery on 33 of 413 nodes after lustre oss failure 
Details: Lost reference on conn prevents peer from being destroyed, which could prevent new peer creation if peer count has reached upper limit.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16102 16102]'''
Severity: normal 
Description: LNET Selftest results in Soft lockup on OSS CPU 
Details: only hits when 8 or more o2ib clients involved and a session is torn down with 'lst end_session' without preceeding 'lst stop'.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16321 16321]'''
Severity: minor 
Description: concurrent_sends in IB LNDs should not be changeable at run time
Details: concurrent_sends in IB LNDs should not be changeable at run time

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18238 18238]'''
Severity: normal 
Frequency: rare 
Description: panic in mds_open 
Details: don't confuse mds_finish_transno() with PTR_ERR(-ENOENT)

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17972 17972]'''
Severity: normal 
Frequency: rare 
Description: stuck in cache_remove_extent() or panic with accessing to already freed look. 
Details: release lock refernce only after add page to pages list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17636 17636]'''
Severity: normal 
Frequency: always with long access acl 
Descriptoin: mds can't pack reply with long acl. 
Details: mds don't control size of acl but they limited by reint/getattr reply buffer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18049 18049]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: aborting recovery hang on MDS 
Details: don't throttle destroy RPCs for the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18018 18018]'''
Severity: major 
Frequency: on remount 
Description: external journal device not working after the remount 
Details: clear dev_rdonly flag for external journal devices in blkdev_put()

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17802 17802]'''
Severity: minor 
Frequency: rare 
Description: shutdown vs evict race 
Details: client_disconnect_export vs connect request race. if client will evicted at this time - we start invalidate thread without referece to import and import can be freed at same time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16693 16693]'''
Severity: minor 
Frequency: always 
Description: shrink LOV EAs before replying 
Details: correctly adjust LOV EA buffer for reply.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16081 16081]'''
Severity: normal 
Frequency: rare 
Description: don't skip ost target if they assigned to file 
Details: Drop slow OSCs if we can, but not for requested start idx. This means "if OSC is slow and it is not the requested start OST, then it can be skipped, otherwise skip it only if it is inactive/recovering/out-of-space.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17201 17201]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: normal 
Frequency: rare, need ACLs on inode. 
Description: client can't handle ost additional correctly 
Details: if ost was added after client connected to mds client can have hit lnet_try_match_md ... to big messages to wide striped files. in this case need teach client to handle config events about add lov target and update client max ea size at that event.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17374 17374]'''
Severity: enhancement 
Description: Update to sles9 kernel-2.6.5-7.314.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17458 17458]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16578 16578]'''
Severity: normal 
Frequency: Create a symlink file with a very long name 
Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count) 
Details: If there is no extra space in the request for early cancels, ldlm_req_handles_avail() returns 0 instead of a negative value.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: major 
Frequency: rare, during racing unlink and create in same directory 
Description: mds is deadlocked 
Details: in rare cases, inode in directory can have inode number lower than parent inode number. This produces wrong locking order during open and parallel unlink. Teach mds_open to grab locks in inode number order, not parent -> child order.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=1819 1819]'''
Severity: enhancement 
Description: Add /proc entry for import status 
Details: The mdc, osc, and mgc import directories now have an import directory that contains useful import data for debugging connection problems.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15966 15966]'''
Severity: enhancement 
Description: Re-disable certain /proc logging 
Details: Enable and disable client's offset_stats, extents_stats and extents_stats_per_process stats logging on the fly.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16643 16643]'''
Severity: enhancement 
Description: Generic /proc file permissions 
Details: Set /Proc file permissions in a more generic way to enable non-root users operate on some /proc files.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16561 16561]'''
Severity: major 
Description: Hitting mdc_commit_close() ASSERTION 
Details: Properly handle request reference release in ll_release_openhandle().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Description: Prevent import from entering FULL state when server in recovery

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16750 16750]'''
Severity: normal 
Frequency: only with devices that have a ':' in the name 
Description: service mount cannot take device name with ':' 
Details: Only when device name contains ":/" will mount treat it as client mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16566 16566]'''
Severity: enhancement 
Description: Upcall on Lustre log has been dumped 
Details: Allow for a user mode script to be called once a Lustre log has been dumped. It passes the filename of the dumped log to the script, the location of the script can be specified via /proc/sys/lnet/debug_log_upcall.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16583 16583]'''
Severity: minor 
Frequency: rare 
Description: avoid messages about idr_remove called for unallocated id. 
Details: Move s_dev assigment for clustered NFS to end of initialization, to avoid problem with error handling.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16109 16109]'''
Severity: minor 
Frequency: rare 
Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages 
Details: When connection is reused this not moved from CONN_UNUSED_HASH into CONN_USED_HASH and this prodice warning when put connection again in unused hash.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16573 16573]'''
Severity: enhancement 
Description: Export bytes_read/bytes_write count on OSC/OST.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14840 14840]'''
Severity: major 
Description: quota recovery deadlock during mds failover 
Details: This patch includes att18982, att18236, att18237 in bz14840. 
Solve the problems: 
1. fix osts hang when mds does failover with quotaon 
2. prevent watchdog storm when osts threads wait for the recovery of mds 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14095 14095]'''
Severity: enhancement 
Description: Add lustre_start utility to start or stop multiple Lustre servers from a CSV file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17026 17026]'''
Severity: normal 
Description: kptllnd_peer_check_sends() ASSERTION(!in_interrupt()) failed 
Details: fix stack overflow in distributed lock manager by defering export eviction after a failed callback to the ELT thread instead of handling it in the DLM interpret routine.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12800 12800]'''
Severity: enhancement 
Description: More exported tunables for mballoc 
Details: Add support for tunable preallocation window and new tunables for large/small requests

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16680 16680]'''
Severity: normal 
Description: Detect corruption of block bitmap and checking for preallocations 
Details: Checks validity of on-disk block bitmap. Also it does better checking of number of applied preallocations. When corruption is found, it turns filesystem readonly to prevent further corruptions.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17197 17197]'''
Severity: normal 
Description: ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed 
Details: Once the unmatched stride IO mode is detected, shrink the stride-ahead window to 0. If it does hit cache miss, and read pattern is still stride-io mode, does not reset the stride window, but also does not increase the stride window length in this case.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: normal 
Frequency: only for big-endian servers 
Description: Check if system is big-endian while mounting fs with extents 
Details: Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. Can be bypassed with "bigendian_extents" mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16860 16860]'''
Severity: normal 
Description: Excessive recovery window 
Details: With AT enabled, the recovery window can be excessively long (6000+ seconds). To address this problem, we no longer use OBD_RECOVERY_FACTOR when extending the recovery window (the connect timeout no longer depends on the service time, it is set to INITIAL_CONNECT_TIMEOUT now) and clients report the old service time via pb_service_time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16522 16522]'''
Severity: normal 
Description: Watchdog triggered on MDS failover 
Details: enable OBD_CONNECT_MDT flag when connecting from the MDS so that the OSTs know that the MDS "UUID" can be reused for the same export from a different NID, so we do not need to wait for the export to be evicted.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16839 16839]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: ll_sync thread stay in waiting mds<>ost recovery finished 
Details: fix race due to two ll_sync threads processing the same lov target causing random failures in various tests. The solution is to send ACTIVATE event only if connect already finished and import is in FULL state.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17895 17895]'''
Severity: major 
Frequency: rare, only if using MMP with Linux RAID 
Description: MMP doesn't work with Linux RAID 
Details: While using HA for Lustre servers with Linux RAID, it is possible that MMP will not detect multiple mounts. To make this work we need to unplug the device queue in RAID when the MMP block is being written. Also while reading the MMP block, we should read it from disk and not the cached one.

=Changes from v1.6.5.1 to v1.6.6=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.312 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.27 (SLES 10)''' 
''' 2.6.18-92.1.10.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15272 15272]'''
Severity: normal 
Description: ptl_send_rpc hits LASSERT when ptl_send_buf fails 
Details: only hits under out-of-memory situations

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: enhancement 
Description: Add support for downgrading pools-striped files 
Details: The MDS can understand the new LOV magic from pool striped files and will automatically convert them to the standard striping format for clients (pools will be available in a future release).

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15975 15975]'''
Severity: normal 
Frequency: occasionally, only on patchless client 
Description: add workaround for race between add/remove dentry from hash

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16717 16717]'''
Severity: minor 
Frequency: only during testing 
Description: LBUG when llog conf file is full 
Details: When llog bitmap is full, ENOSPC should be returned for plain log.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Frequency: occasionally, during recovery 
Description: Prevent import from entering FULL state when server in recovery 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare 
Description: avoid ASSERTION(client_stat->nid_exp_ref_count == 0) failed 
Details: release reference to stats when client disconnected, not when export destroyed for avoid races when client destroyed after main ost export.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16679 16679]'''
Severity: normal 
Frequency: when adding OSTs to a running filesystem 
Description: more cleanup in mds_lov 
Details: add workaround for get valid ost count for avoid warnings about drop too big messages, not init llog cat under semphore which can be blocked on reconnect and break normal replay, fix access to wrong pointer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Frequency: only when connecting 1.6.5 clients to 1.6.4 or earlier servers 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16006 16006]'''
Severity: normal 
Frequency: rare 
Description: statfs sometimes returns stale values on the client 
Details: restore missing copy oi_flags to lov requests.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16188 16188]'''
Severity: enhancement 
Description: Update to SLES9 kernel-2.6.5-7.312. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16503 16503]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.22.EL. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16317 16317]'''
Severity: minor 
Frequency: when clients reconnect to server 
Description: per-export statistics in /proc are broken 
Details: recreate /proc entries for clients when they reconnect.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16080 16080]'''
Severity: normal 
Frequency: when adding OSTs to a mounted filesystem 
Description: don't fail open with -ERANGE 
Details: if client connected until mds will be know about real ost count get LOV EA can be fail because mds not allocate enougth buffer for LOV EA.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16101 16101]'''
Severity: normal 
Frequency: only for filesystems larger than 8TB 
Description: ldiskfs BUG ldiskfs_mb_use_best_found() 
Details: The ldiskfs mballoc3 code was using a __u16 to store the group number, but with 8TB+ filesystems there are more than 65536 groups, causing an oops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15576 15576]'''
Severity: normal 
Frequency: rare 
Description: Resolve device initialization race 
Details: Prevent proc handler from accessing devices added to the obd_devs array but yet be intialized.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15308 15308]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16190 16190]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16318 16318]'''
Severity: normal 
Frequency: rare, on PPC clients 
Description: don't swab ost objects in response about directory, because this not exist. 
Details: bug similar bug 14856, but in different function.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15754 15754]'''
Severity: enhancement 
Description: lfs quota tool enhancements 
Details: added units specifiers support for setquota, default to current uid/gid for quota report, short quota stats by default, nonpositional parameters for setquota, added llapi_quotactl manual page.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16037 16037]'''
Severity: normal 
Frequency: only on 32-bit clients with more than 1GB of RAM 
Description: Client runs out of low memory 
Details: Consider only lowmem when counting initial number of llap pages

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15625 15625]'''
Severity: enhancement 
Description: optional service tags registration 
Details: if the "service tags" package is installed on a Lustre node When the filesystem is mounted, a local-node service tag will be created. See http://inventory.sun.com/ for more information about the Service Tags asset management system.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15825 15825]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: Kernel BUG tries to release flock 
Details: Lustre does not destroy flock lock before last reference goes away. So always drop flock locks when client is evicted and perform unlock regardless of successfulness of speaking to MDS.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16189 16189]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.20. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]'''
Severity: normal 
Frequency: rare, only during unmount 
Description: add refcount for osc callbacks, so avoid panic on shutdown 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16014 16014]'''
Severity: normal 
Frequency: only if OSTs have been removed or non-sequential OST index used 
Description: Kernel panic with find ost index. 
Details: lov_obd have panic if some OST's have sparse indexes.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15865 15865]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15924 15924]'''
Severity: major 
Frequency: only if client is mounted with "-o flock" 
Description: do not process already freed flock 
Details: flock can possibly be freed by another thread before it reaches to ldlm_flock_completion_ast.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14480 14480]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: LBUG during stress test 
Details: Need properly lock accesses the flock deadlock detection list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15837 15837]'''
Severity: minor 
Frequency: rare 
Description: oops in page fault handler 
Details: kernel page fault handler can return two special 'pages' in error case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15716 15716]'''
Severity: minor 
Frequency: rare, during recovery 
Description: timeout with invalidate import. 
Details: ptlrpcd_check call obd_zombie_impexp_cull and wait request which should be handled by ptlrpcd. This produce long age waiting and -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14742 14742]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(CheckWriteback(page,cmd)) failed 
Details: badly clear PG_Writeback bit in ll_ap_completion can produce false positive assertion.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15779 15779]'''
Severity: normal 
Frequency: only with broken builds/installations 
Description: no LBUG if lquota.ko and fsfilt_ldiskfs.ko are different versions 
Details: just return an error to a user, put a console error message

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15741 15741]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15742 15742]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.15. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14134 14134]'''
Severity: enhancement 
Description: enable MGS and MDT services start separately 
Details: add a 'nomgs' option in mount.lustre to enable start a MDT with a co-located MGS without starting the MGS, which is a complement to 'nosvc' mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]'''
Severity: normal 
Frequency: always, on big-endian systems 
Description: cleanup in ptlrpc code, related to PPC platform 
Details: store magic in native order avoid panic's in recovery on PPC node and forbid from this error in future. Also fix posibily of twice swab data. Fix get lov striping to userpace.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15756 15756]'''
Severity: normal 
Frequency: rare, replay get lost on server 
Description: server incorrectly drop resent replays lead to recovery failure. 
Details: do not drop replay according to msg flags, instead we check the per-export recovery request queue for duplication of transno.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14835 14835]'''
Severity: normal 
Frequency: after recovery 
Description: precreate to many object's after del orphan. 
Details: del orphan st in oscc last_id == next_id and this triger growing count of precreated objects. Set flag LOW to skip increase count OF precreated objects.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare, on clear nid stats 
Description: ASSERTION(client_stat->nid_exp_ref_count == 0) 
Details: when clean nid stats sometimes try destroy live entry, and this produce panic in free.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15575 15575]'''
Severity: major 
Frequency: occasionally since 1.6.4 
Description: Stack overflow during MDS log replay 
Details: ease stack pressure by using a thread dealing llog_process.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]'''
Severity: minor 
Frequency: very rare 
Description: MDT cannot be unmounted, reporting "Mount still busy" 
Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15443 15443]'''
Severity: normal 
Frequency: rare 
Description: wait until IO finished before start new when do lock cancel. 
Details: VM protocol want old IO finished before start new, in this case need wait until PG_writeback is cleared until check dirty flag and call writepages in lock cancel callback.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12888 12888]'''
Severity: normal 
Frequency: rare 
Description: mds_mfd_close() ASSERTION(rc == 0) 
Details: In mds_mfd_close(), we need protect inode's writecount change within its orphan write semaphore to prevent possible races.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14645 14645]'''
Severity: minor 
Frequency: rare, on shutdown ost 
Description: don't hit live lock with umount ost. 
Details: shrink_dcache_parent can be in long loop with destroy dentries, use shrink_dcache_sb instead.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14949 14949]'''
Severity: minor 
Frequency: only when echo_client is used 
Description: don't panic with use echo_client 
Details: echo client pass NULL as client nid pointer and this produce NULL pointer dereference.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15278 15278]'''
Severity: normal 
Frequency: Always on 32-bit PowerPC systems 
Description: fix build on PPC32 
Details: compile code with -m64 flag produce wrong object file for PPC32.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15574 15574]'''
Severity: normal 
Frequency: rare 
Description: MDS LBUG: ASSERTION(!IS_ERR(dchild)) 
Details: In reconstruct_* functions, LASSERTs on both the data supplied by a client, and the data on disk are dangerous and incorrect. Change them with client eviction.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15346 15346]'''
Severity: enhancement 
Description: skiplist implementation simplification 
Details: skiplists are used to group compatible locks on granted list that was implemented as tracking first and last lock of each lock group the patch changes that to using doubly linked lists

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14693 14693]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15932 15932]'''
Severity: normal 
Frequency: blocks per group < blocksize*8 and uninit_groups is enabled 
Description: ldiskfs error: XXX blocks in bitmap, YYY in gd 
Details: If blocks per group is less than blocksize*8, set rest of the bitmap to 1.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15953 15953]'''
Severity: normal 
Description: more ldlm soft lockups 
Details: In ldlm_resource_add_lock(), call to ldlm_resource_dump() starve other threads from the resource lock for a long time in case of long waiting queue, so change the debug level from D_OTHER to the less frequently used D_INFO.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]'''
Severity: enhancement 
Description: add -gid, -group, -uid, -user options to lfs find 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15284 15284]'''
Severity: enhancement 
Description: tool to recover objects put in lost+found by e2fsck 
Details: OST crashes and subsequent e2fsck can lead to objects being moved to lost+found directory. Using the "ll_recover_lost_found_objs" tool, these objects can be retrieved and data can be salvaged by using the object ID saved in the fid.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15758 15758]'''
Severity: minor 
Frequency: rare 
Description: this bug _only_ happens when inode quota limitation is very low (less than 12), so that inode quota unit is 1 at initialization. 
Details: if remaining quota equates 1, it is a sign to demonstate that quota is effective now. So least quota qunit should be 2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15950 15950]'''
Severity: normal 
Frequency: rare, using O_DIRECT only 
Description: Hung threads in invalidate_inode_pages2_range 
Details: The direct IO path doesn't call check_rpcs to submit a new RPC once one is completed. As a result, some RPCs are stuck in the queue and are never sent.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15684 15684]'''
Severity: normal 
Frequency: rare, during shutdown 
Description: Procfs and llog threads access destoryed import sometimes. 
Details: Sync the import destoryed process with procfs and llog threads by the import refcount and semaphore.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15674 15674]'''
Severity: major 
Description: mds fails to respond, threads stuck in ldlm_completion_ast 
Details: Sort source/child resource pair after updating child resource.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16226 16226]'''
Severity: major 
Frequency: rare 
Description: kernel BUG at ldiskfs2_ext_new_extent_cb 
Details: If insertion of an extent fails, then discard the inode preallocation and free data blocks else it can lead to duplicate blocks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16199 16199]'''
Severity: normal 
Description: don't always update ctime in ext3_xattr_set_handle() In some cases the ctime should not be updated, for example for 2.0->1.8 compatibility it is necessary to delete an xattr and it should not update the ctime.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15058 15058]'''
Severity: normal 
Description: add quota statistics 
Details: 1. sort out quota proc entries and proc code. 2. add quota statistics

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16125 16125]'''
Severity: normal 
Frequency: often 
Description: quotas are not honored with O_DIRECT 
Details: all writes with the flag O_DIRECT will use grants which leads to this problem. Now using OBD_BRW_SYNC to guard this.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15713 15713]'''
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16362 16362]'''
Severity: major 
Frequency: rare 
Description: Assertion in iopen_connect_dentry in 1.6.3 
Details: looking up an inode via iopen with the wrong generation number can populate the dcache with a disconneced dentry while the inode number is in the process of being reallocated. This causes an assertion failure in iopen since the inode's dentry list contains both a connected and disconnected dentry.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16496 16496]'''
Severity: normal 
Description: assertion failure in ldlm_handle2lock() 
Details: fix a race between class_handle_unhash() and class_handle2object() introduced in lustre 1.6.5 by bug 13622.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: minor 
Frequency: rare 
Description: Pools downgrade compatibility 
Details: Files striped across pools in future (1.8) releases will be properly understood if the server is downgraded to this version.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12755 12755]'''
Severity: minor 
Frequency: rare 
Description: Kernel BUG: sd_iostats_bump: unexpected disk index 
Details: remove the limit of 256 scsi disks in the sd_iostat patch

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16494 16494]'''
Severity: minor 
Frequency: rare 
Description: oops in sd_iostats_seq_show() 
Details: unloading/reloading the scsi low level driver triggers a kernel bug when trying to access the sd iostat file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16404 16404]'''
Severity: major 
Frequency: rare 
Description: Kernel panics during QLogic driver reload 
Details: REQ_BLOCK_PC requests are not handled properly in the sd iostat patch, causing memory corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16140 16140]'''
Severity: minor 
Description: journal_dev option does not work in b1_6 
Details: pass mount option during pre-mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10555 10555]'''
Severity: enhancement 
Description: Add a FIEMAP (FIle Extent MAP) ioctl for ldiskfs 
Details: FIEMAP ioctl will allow an application to efficiently fetch the extent information of a file. It can be used to map logical blocks in a file to physical blocks in the block device.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16972 16972]'''
Severity: normal 
Frequency: only with adaptive timeout enabled 
Description: DEBUG_REQ() bad paging request 
Details: ptlrpc_at_recv_early_reply() should not modify req->rq_repmsg because it can be accessed by reply_in_callback() without the rq_lock held.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16813 16813]'''
Severity: normal 
Frequency: only on Cray X2 
Description: X2 build failures 
Details: fix build failures on Cray X2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16303 16303]'''
Severity: major 
Frequency: Only on FC kernels 2.6.22+ 
Description: oops in statahead 
Details: Do not drop reference count for the dentry from VFS when lookup, VFS will do that by itself.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17024 17024]'''
Severity: major 
Description: Lustre oops in {:ptlrpc:ptlrpc_server_free_request+373} 
Details: In case of memory pressure, list_del() can be called twice on req->rq_history_list, causing a kernel oops.

=Changes from v1.6.5 to v1.6.5.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14309 14309]'''
Severity: normal 
Description: RPM packages did not include InfinBand support 
Details: The Lustre 1.6.5 did not include InfiniBand RPM packages.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14699 14699]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

=Changes from v1.6.4.3 to v1.6.5=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*Severity: critical

Frequency: very rare, if additional xattrs are used on kernels >= 2.6.12

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15777 15777]

Description: MDS may lose file striping (and hence file data) in some cases

Details: If there are additional extended attributes stored on the MDS, in particular ACLs, SELinux, or user attributes (if user_xattr is specified for the client mount options) then there is a risk of attribute loss. Additionally, the Lustre file striping needs to be larger than default (e.g. striped over all OSTs), and an additional attribute must be stored initially in the inode and then increase in size enough to be moved to the external attribute block (e.g. ACL growing in size) for file data to be lost.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12191 12191]

Description: add message levels for liblustreapi

*Severity: minor

Frequency: rare, only if {mds,oss}_num_threads is specified

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=15759 15759]

Description: MDS or OSS service threads fail startup with -24 (-EMFILE)

Details: During startup under recovery, it is possible for service thread startup to fail in ptlrpc_start_threads() if one of the threads begins processing a request and then starts an additional thread. This causes ptlrpc_start_threads() to try and start 1 too many threads and get an error.

*Severity: normal

Frequency: rare

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: MDT cannot be unmounted, reporting "Mount still busy"

Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: fix for occasional failure case of -ENOSPC in recovery-small tests

Details: Move the 'good_osts' check before the 'total_bavail' check. This will result in an -EAGAIN and in the exit call path we call alloc_rr() which will with increasing aggressiveness attempt to aquire precreated objects on the minimum number of required OSCs.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14326 14326]

Description: Use old size assignment to avoid deadlock

Details: This reverts the changes in bugs 2369 and bug 14138 that introduced
the scheduling while holding a spinlock. We do not need locking for size in ll_update_inode() because size is only updated from the MDS for directories or files without objects, so there is no other place to do the update, and concurrent access to such inodes are protected by the inode lock.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14655 14655]

Description: Use __u64 instead of int for valid bits

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14746 14746]

Description: resolve "_IOWR redefined" build error on SLES10

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14763 14763]

Description: dump the memory debugging after all modules are unloaded to suppress false negative in conf_sanity test 39

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14872 14872]

Description: the recovery timer never expires

Details: for new client connect request, the recovery timer should not be reset, otherwise recovery timer will never expired, if the old client never come. Only old client connect and first connection req should trigger recovery timer reset.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15521 15521]

Description: the min numbers of lproc stats are wrong

Details: adding a new constant LC_MIN_INIT and use it for initialization of lc_min.

*Severity: normal

Frequency: always with interactive lfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15212 15212]

Description: Reinitialize optind to 0 so that interactive lfs works in all cases

*Severity: normal

Frequency: with multiple concurrent readdir processes in same directory

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15406| 15406] [https://bugzilla.lustre.org/show_bug.cgi?id=15169 15169] [https://bugzilla.lustre.org/show_bug.cgi?id=15175 15175]

Description: misc fixes for directory readahead.

Details: prevent previous statahead async RPC callback from processing the current "statahead_info", race condition between async RPC callback add dentry into dentry hash table and "ls" thread revalidate such dentry, statahead his/miss control for hidden items, and so on.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15316 15316]

Description: build kernel-ib packages for OFED 1.3 in our release cycle

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15036 15036]

Description: incore types cleaning in quota code (with respect to 64-bit limits)

Details: several u32 variables declarations are replaced with u64 declarations

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: fix SLES kernel versioning

Details: the kernel version for our SLES 10 kernel did not include a "-" before the "smp" at the end. while this was not a problem in general, it did mean that software trying to use the kernel version to try to detect a vendor specific kernel would fail. this was most evident by the OFED build scripts.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14803 14803]

Description: Don't update lov_desc members until making sure they are valid

Details: When updating lov_desc members via proc fs, need fix their validities before doing the real update.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15069 15069]

Description: don't put request into delay list while invalidate in flight.

Details: ptlrpc_delay_request sometimes put in delay list while invalidate import in flight. this produce timeout for invalidate and sometimes can cause stale data.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15240 15240]

Description: Update kernel to RHEL4 2.6.9-67.0.7.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]

Frequency: on PPC only

Description: not convert ost objects for directory because it's not exist.

Details: ll_dir_getstripe assume directory has ost objects but this wrong.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15517 15517]

Description: Fix warnings with compile liblustre at sles10/rhel5 which have __u64 as usingied long long type.

*Severity: minor

Frequency: rare, on shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]

Description: race process AST vs remove callback

Details: removing callback before disconnect import open race with processing callback.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]

Description: Files open for execute are not marked busy on SLES10

Details: Add FMODE_EXEC to SLES10 SP1 server kernel series.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13397 13397]

Description: Add server support for vanilla-2.6.22.14.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13375 13375]

Description: Avoid lov_create() getting stuck in obd_statfs_rqset()

Details: If an OST is down the MDS will hang indefinitely in obd_statfs_rqset() waiting for the statfs data. While for MDS QOS usage of statfs, it should not stuck in waiting.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3055 3055]

Description: Disable adaptive timeouts by default

*Severity: major

Frequency: on network error

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15027 15027]

Description: panic with double free request if network error

Details: mdc_finish_enqueue is finish request if any network error occuring, but it's true only for synchronus enqueue, for async enqueue (via ptlrpcd) this incorrect and ptlrpcd want finish request himself.

*Severity: normal

Frequency: rare, on recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14533 14533]

Description: read procfs can produce deadlock in some situation

Details: Holding lprocfs lock with send rpc can produce block for destroy obd objects and this also block reconnect with -EALREADY. This isn't fix all lprocfs bugs - but make it rare.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15152 15152]

Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.

*Severity: major

Frequency: frequent on X2 node

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15010 15010]

Description: mdc_set_open_replay_data LBUG

Details: Set replay data for requests that are eligible for replay.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14321 14321]

Description: lustre_mgs: operation 101 on unconnected MGS

Details: When MGC is disconnected from MGS long enough, MGS will evict the MGC, and late on MGC cannot successfully connect to MGS and a lot of the error messages complaining that MGS is not connected.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack, the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14720 14720]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.

*Serverity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793]

Description: Update RHEL4 kernel to 2.6.9-67.0.4.

*Severity: minor

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Don't allow skipping OSTs if index has been specified.

Details: Don't allow skipping OSTs if index has been specified, make locking in internal create lots better.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14421 14421]

Description: ASSERTION(!PageDirty(page)) failed

Details: Wrong check could lead to an assertion failure under specific load patterns.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12228 12228]

Description: LBUG in ptlrpc_check_set() bad phase ebc0de00

Details: access to bitfield in structure is always rounded to long and this produce problem with not atomic change any bit.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13647 13647]

Description: Lustre 'make rpms' failed.

Details: Remove ldiskfs spec file to avoids rpmbuild be confused when builds Lustre rpms from tarball.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14498 14498]

Description: Update to SLES9 SP4 kernel-2.6.5-7.308.

*Severity: normal

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14608 14608]

Description: If llog cancel was not send before clean_exports phase, this can produce deadlock in llog code.

Details: If llog thread has last reference to obd and call class_import_put this produce deadlock because llog_cleanup_commit_master wait when last llog_commit_thread exited, but this never success because was called from llog_commit_thread.

*Severity: normal

Frequency: only if OST index is skipped

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14607 14607]

Description: NULL lov_tgts causing MDS oops

Details: more safe checks for NULL lov_tgts for avoid oops.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14531 14531]

Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14368 14368]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14136 14136]

Description: make mgs_setparam() handle fsname containing dash

Details: fsname containing a dash does not work with lctl conf_param

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14288 14288]

Description: Update to RHEL4 Update-6 kernel-2.6.9-67.EL.

*Severity: normal

Frequency: rare, in recovery and (or) destroy lovobjid file.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12702 12702]

Description: rewrite lov_objid code.

Details: Cleanup for lov_objid code, remove scability problems and wrong locking. Fix sending last_id into OST.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14388 14388]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14289 14289]

Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.

Details: Use d_move_locked instead of __d_move.

*Severity: major

Frequency: rare, at shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14260 14260]

Description: access already free / zero obd_namespace.

Details: if client_disconnect_export was called without force flag set, and exist connect request in flight, this can produce access to NULL pointer (or already free pointer) when connect_interpret store ocd flags in obd_namespace.

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14418 14418]

Description: not alloc memory with spinlock held.

Details: allocation memory with GFP_KERNEL can produce sleep deadlock, if any spinlock held.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14270 14270]

Description: lfs find does not continue on file error

Details: Continue other files processing when a file/dir is absent.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11791 11791]

Description: Inconsistent usage of lustre_pack_reply()

Details: Standardize the usage of lustre_pack_reply() such that it always generate a CERROR on failure.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3462 3462]

Description: Fix replay if there is an un-replied request and open

Details: In some cases, older replay request will revert the mcd->mcd_last_xid on MDS which is used to record the client's latest sent request.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13874 13874]

Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13889 13889]

Description: Update to SLES9 kernel-2.6.5-7.287.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14041 14041]

Description: Update to RHEL4 kernel-2.6.9-55.0.12.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13690 13690]

Description: Build SLES10 patchless client fails

Details: The configure was broken by run ./configure with --with-linux-obj=.... argument for patchless client. When the configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude can't search header adequately. Use absolute path such as -I($LINUX)/include instead.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11622 11622]

Description: Lustre Page Accounting

Details: New macros for page alloc and free which enable accounting of page allocation of Lustre. Use percpu counters to store memory and page statistics.

*Severity: normal

Frequency: only if debugging is disabled

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13497 13497]

Description: LASSERT_{REQ,REP}SWAB macros are buggy

Details: If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop these macros and replace them with their definitions instead.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13888 13888]

Description: interrupt oig_wait produce painc on resend.

Details: brw_redo_request can be used for resend requests from ptlrpcd and private set, and this produce situation when rq_ptlrpcd_data not copyed to new allocated request and triggered LBUG on assert req->rq_ptlrpcd_data != NULL. But this member used only for wakeup ptlrpcd set if request is changed and can be safety changed to use rq_set directly.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11089 11089]

Description: organize the server-side client stats on per-nid basis

Details: Change the structure of stats under obdfilter and mds to
New structure:
+- exports
+- nid#1
| + stats
| + uuids
+- nid#2...
+- clear
The "uuid"s file would list the uuids of _active_ exports. And the clear entry is to clear all stats and stale nids.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12266 12266]

Description: Processes looping in ll_readdir() on Lustre clients finally causing a full node pseudo-hang

Details: Concurrent access to the same directory from multiple clients with intensive file creation/removal can cause a client node to spin in ll_readdir(). i_version must be increased every time the lock is cancelled to ensure a revalidate is done.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12829 12829] [https://bugzilla.lustre.org/show_bug.cgi?id=13455 13455]

Description: Changing primary group doesn't change the group lustre assigns to a file

Details: When CRAY_XT3 is defined, the fsgid supplied by the client is overridden with the primary group provided by the group upcall, whereas the supplied fsgid can be trusted if it is in the list of supplementary groups returned by the group upcall.

*Severity: enhancement
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12749 12749]

Description: Root Squash Functionality

Details: Implementation of NFS-like root squash capability. Specifically, don't allow someone with root access on a client node to be able to manipulate files owned by root on a server node.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10718 10718]

Description: Slow trucate/writes to huge files at high offsets.

Details: Directly associate cached pages to lock that protect those pages, this allows us to quickly find what pages to write and remove once lock callback is received.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14379 14379]

Description: Too many locks accumulating on client during NFS usage

Details: mds_open improperly used accmode to find out access mode to a file. Also mdc_intent_lock logic to find out if we already have lock similar to just received was flawed since introduction of skiplists - locks are now added to the front of the granted queue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14477 14477]

Description: Hit ASSERTION(obd->obd_stopping == 1) failed in some setup failed situation.

Details: In obd setup failure handler, obd_stopping will not necessarily to be 1, and obd_set_up should also be checked to make sure whether obd is completely setup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14398 14398]

Description: Allow masking D_WARNING, D_ERROR messages from console

Details: Console messages can now be disabled via lnet.printk.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14614 14614]

Description: User code with malformed file open parameter crashes client node

Details: Before packing join_file req, all the related reference should be checked carefully in case some malformed flags cause fake join_file req on client.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10600 10600]

Description: shrink/enlarge qunit size when needed; fix the problem of coarse grain of quota doing harm to quota's accuracy

Details: qunit size will be changed when quota limitation is too low/high; record the pending quota write in order to get more accureate quota; delete the patch for bug12588, which is unnecessary when this patch is landed. This bug also contains fixes for bug 14526, 14299, 14601 and 13794.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14225 14225]

Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK

Details: ldlm_completion_ast() assumes that a lock is granted when the req mode is equal to the granted mode. However, it should also check that LDLM_FL_CP_REQD is not set.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14360 14360]

Description: Heavy nfs access might result in deadlocks

Details: After ELC code landed, it is now improper to enqueue any mds locks under och_sem, because enqueue might want to decide to cancel open locks for same inode we are holding och_sem for.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14443 14443]

Description: 35% write performance drop with ldiskfs2 when quotas are on

Details: Enable ext3 journalled quota by default to improve performance when quotas are turned on.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13843 13843]

Description: Client eviction while running blogbench

Details: A lot of unlink operations with concurrent I/O can lead to a deadlock causing evictions. To address the problem, the number of oustanding OST_DESTROY requests is now throttled to max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking callbacks are processed in priority.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14845 14845]

Description: conflicts between asm-ppc64/types.h and lustre_types.h

Details: fix duplicated definitions between asm-ppc64/types.h and lustre_types.h on PPC.

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14844 14844]

Description: asm-ppc/segment.h does not exist

Details: fix compile issue on PPC.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: add support for several checksum algorithms. Currently, CRC32 and Adler-32 are supported. The checksum type can be changed on the fly through /proc/fs/lustre/osc/*/checksum_type.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14648 14648]

Description: use adler32 for page checksums

Details: when available, use the Adler-32 algorithm instead of CRC32 for page checksums.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14864 14864]

Description: better handle error messages in extents code

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14729 14729]

Description: SNMP support enhancement

Details: Adding total number of sampled request for an MDS node in snmp support.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14748 14748]

Description: Optimize ldlm waiting list processing for PR extent locks

Details: When processing waiting list for read extent lock and meeting read lock that is same or wider to it that is not contended, skip processing rest of the list and immediatelly return current status of conflictness, since we are guaranteed there are no conflicting locks in the rest of the list.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14774 14774]

Description: Time out and refuse to reconnect

Details: When the failover node is the primary node, it is possible to have two identical connections in imp_conn_list. We must compare not conn's pointers but NIDs, otherwise we can defeat connection throttling.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775]

Description: Client not clear own cache if answer to reconnect is lost.

Details: Client gets evicted from server. Now client also thinks it is disconnected (or gets ENOTCONN on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but reply is lost and not reported to client. Client reconnects again and gets back a just-created connection, but it is not new so client thinks it was not evicted and does not do recovery.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14483 14483]

Description: Detect stride IO mode in read-ahead

Details: When a client does stride read, read-ahead should detect that and read-ahead pages according to the detected stride pattern.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15033 15033]

Description: build for X2 fails

Details: fix compile issue on Cray systems.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13371 13371]

Description: implement readv/writev APIs(aio_read/aio_writes in newer kernels)

Details: This greatly improves speed of NFS writes on 2.6 kernels.

*Severity: normal

Frequency: only on PPC/SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14855 14855]

Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h

Details: On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to be defined. Add a hack in mkfs_lustre.c to work around this compile issue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14257 14257]

Description: LASSERT on MDS when client holding flock lock dies

Details: ldlm pool logic depends on number of granted locks equal to number of released locks which is not true for flock locks, so just exclude such locks from consideration.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15188 15188]

Description: MDS deadlock with many ll_sync_lov threads and I/O stalled

Details: Use fsfilt_sync() for both the whole filesystem sync and individual file sync to eliminate dangerous inode locking with I_LOCK that can lead to a deadlock.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15566 15566]

Description: Update an obsolete wirecheck.c generator

Details: Update wirecheck.c/wirehdr.c and regenerate wiretest.c

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14712 14712]

Description: Client can panic on open sometimes

Details: It is possible that we try to free already freed request in ll_file_open in some error cases when we send request from ll_file_open

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14410 14410]

Description: performance in 1.6.3

Details: Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be sure that 1MB requests are not fragmented by the block layer.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15198 15198]

Description: LDLM soft lockups - improvement

Details: It is be possible to send the lock handle along with each read or write request because the client is already doing a lock match itself so there isn't any reason the OST should have to re-do that search.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14036 14036]

Description: lfs quota fails with deactivated OSTS

Details: With this patch, three improvements are included:
1. detete the softlimit in mds and osts when use "lfs quota".
2. display the inaccurate data in the output of "lfs quota".
3. try to get quota info when "lfs quota" is executed.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15776 15776]

Description: Extent locks not granted with no conflicts sometimes.

Details: When race occurs in glimpse handler and nothing is returned, we do not reprocess the queue after lock cancel, and that leads to a stall until next activity on a resource

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15712 15712]

Description: ksocknal_create_conn() hit ASSERTION during connection race

Details: ksocknal_create_conn() hit ASSERTION during connection race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13983 13983]

Description: ksocknal_send_hello() hit ASSERTION while connecting race

Details: ksocknal_send_hello() hit ASSERTION while connecting race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14425 14425]

Description: o2iblnd/ptllnd credit deadlock in a routed config.

Details: o2iblnd/ptllnd credit deadlock in a routed config.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14956 14956]

Description: High load after starting lnet

Details: gmlnd should sleep in rx thread in interruptible way. Otherwise, uptime utility reports high load that looks confusingly.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14838 14838]

Description: ksocklnd fails to establish connection if accept_port is high

Details: PID remapping must not be done for active (outgoing) connections

=Changes from v1.6.4.2 to v1.6.4.3=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-67.0.4.EL (RHEL 4), 2.6.16.54-0.2.5 (SLES 10), 2.6.18-53.1.13.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793 ]

Description: Update to the latest RHEL4 kernel (i.e. 2.6.9-67.0.4.EL) to fix the vulnerabilities described in CVE-2008-0001, CVE-2007-5500 and CVE-2007-4130.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858 ]

Description: Update to the latest SLES10 kernel (i.e. 2.6.16.54-0.2.5) to fix the security problems described in CVE-2008-0007, CVE-2008-0001, CVE-2007-5966 and CVE-2007-6417.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876 ]

Description: Update to the latest RHEL5 kernel (i.e. 2.6.18-53.1.13.el5) to fix the vulnerability described in CVE-2008-0600. This problem could allow local user to gain root privileges.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618 ]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775 ]

Description: Client not clear own cache if answer to reconnect is lost.

Details: client gets evicted from server. Now client also thinks it is disconnected (ot gets enotconn on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but client gets a reply that the export is new, and so no recovery should be performed.

=Changes from v1.6.4.1 to v1.6.4.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Frequency: only for relatively new filesystems, when OSTs are in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14631 14631 ]

Description: OST objects below id 20000 are deleted, causing data loss

Details: For relatively newly formatted OST filesystem(s), where there have not been at least 20000 objects created on an OST a bug in MDS->OST orphan recovery could cause those objects to be deleted if the OST was in recovery, but the MDS was not. Safety checks in the orphan recovery prevent this if more than 20000 objects were ever created on an OST. If the MDS was also in recovery the problem was not hit. Only in 1.6.4.1.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

=Changes from v1.6.4 to v1.6.4.1=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14433 14433]

Description: Oops on connection from 1.6.3 client

Frequency: always, on connection from 1.6.3 client

Details: Enable and accept the OBD_CONNECT_LRU_RESIZE flag only if LRU resizing is enabled at configure time. This fixes an oops caused by incorrectly accepting the LRU_RESIZE feature even if --enable-lru-resize is not specified.

=Changes from v1.6.3 to v1.6.4=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11686 11686]

Description: Console message flood

Details: Make cdls ratelimiting more tunable by adding several tunable in procfs /proc/sys/lnet/console_{min,max}_delay_centisecs and /proc/sys/lnet/console_backoff.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13521 13521]

Description: Update kernel patches for SLES10 2.6.16.53-0.8.

Details: Update which_patch & target file for SLES10 latest kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]

Description: add --type and --size parameters to lfs find

Details: Enhance lfs find by adding filetype and filesize parameters. Also multiple OBDs can now be specified for the --obd option.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11270 11270]

Description: eliminate client locks in face of contention

Details: file contention detection and lockless i/o implementation for contended files.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12411 12411]

Description: Remove client patches from SLES 10 kernel.

Details: This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2369 2369 ]

Description: use i_size_read and i_size_write in 2.6 port

Details: replace inode->i_size access with i_size_read/write()

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13454 13454]

Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13518 13518]

Description: Kernel patches update for RHEL4 2.6.9-55.0.6.

Details: Modify vm-tunables-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13452 13452]

Description: Kernel config for 2.6.18-vanilla.

Details: Modify targets/2.6-vanilla.target.in. Add config file kernel-2.6.18-2.6-vanilla-i686.config. Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13207 13207]

Description: adapt the lustre_config script to support the upgrade case

Details: Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel.

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13751 13751]

Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.

Details: Modify target file & which_patch. A flaw was found in the IA32 system call emulation provided on AMD64 and Intel 64 platforms. An improperly validated 64-bit value could be stored in the %RAX register, which could trigger an out-of-bounds system call table access. An untrusted local user could exploit this flaw to run code in the kernel (ie a root privilege escalation). (CVE-2007-4573).

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13748 13748]

Description: Update RHEL 4 kernel to fix local root privilege escalation.

Details: Update to the latest RHEL 4 kernel to fix the vulnerability described in CVE-2007-4573. This problem could allow untrusted local users to gain root access.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14353 14353]

Description: excessive CPU consumption on client reduces IO performance

Details: in some cases the ldlm_poold thread is spending too much time trying to cancel locks, and is cancelling them too aggressively and this can severely impact IO performance. Disable the dynamic LRU resize code at build time. It can be re-enabled with configure --enable-lru-resize at build time.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13917 13917]

Description: MDS hang or stay in waiting lock

Details: If client receive lock with CBPENDING flag ldlm need send lock cancel as separate rpc, to avoid situation when cancel request can't processed due all i/o threads stay in wait lock.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11710 11710]

Description: improve handling recoverable errors
Details: If request processed with error which can be recoverable on server request should be resend, otherwise page released from cache and marked as error.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12302 12302]

Description: new userspace socklnd

Details: Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced with new one - usocklnd.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13730 13730]

Description: Do not fail import if osc_interpret_create gets -EAGAIN

Details: If osc_interpret_create got -EAGAIN it immediately exits and wakeup oscc_waitq. After wakeup oscc_wait_for_objects call oscc_has_objects and see OSC has no objests and call oscc_internal_create to resend create request.

*Severity: normal

Frequency: when removing large files

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13181 13181]

Description: scheduling issue during removal of large Lustre files

Details: Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels. It causes scheduling issues when removing large files (17TB in the present case).

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13358 13358]

Description: 1.4.11 Can't handle directories with stripe set and extended ACLs

Details: Impossible (EPROTO is returned) to access a directory that has a non-default striping and ACLs.

*Severity: normal

Frequency: only on ppc

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12234 12234]

Description: /proc/fs/lustre/devices broken on ppc

Details: The patch as applied to 1.6.2 doesn't look correct for all arches. We should make sure the type of 'index' is loff_t and then cast explicitly as needed below. Do not assign an explicitly cast loff_t to an int.

*Severity: normal

Frequency: only for rhel5

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13616 13616]

Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.

Details: Modify the target file & which_kernel.

*Severity: normal

Frequency: if the uninit_groups feature is enabled on ldiskfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13706 13706]

Description: e2fsck reports "invalid unused inodes count"

Details: If a new ldiskfs filesystem is created with the "uninit_groups" feature and only a single inode is created in a group then the "bg_unused_inodes" count is incorrectly updated. Creating a second inode in that group would update it correctly.

*Severity: normal

Frequency: only if filesystem is inconsistent

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11673 11673]

Description: handle "serious error: objid * already exists" more gracefully

Details: If LAST_ID value on disk is smaller than the objects existing in the O/0/d* directories, it indicates disk corruption and causes an LBUG(). If the object is 0-length, then we should use the existing object. This will help to avoid a full fsck in most cases.

*Severity: normal

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13570 13570]

Description: To avoid grant space > avaible space when the disk is almost full. Without this patch you might see the error "grant XXXX > available" or some LBUG about grant, when the disk is almost full.

Details: In filter_check_grant, for non_grant cache write, we should check the left space by if (*left > ungranted + bytes), instead of (*left > ungranted), because only we are sure the left space is enough for another "bytes", then the ungrant space should be increase. In client, we should update cl_avail_grant only there is OBD_MD_FLGRANT in the reply.

*Severity: normal

Frequency: when using O_DIRECT and quotas

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13930 13930]

Description: Incorrect file ownership on O_DIRECT output files

Details: block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: disable checksums by default since it impacts single node performance. It is still possible to enable checksums by default via "configure --enable-checksum", or at runtime via procfs.

*Severity: minor

Frequency: when lov objid is destroyed

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14222 14222]

Description: mds can't recreate lov objid file.

Details: if lov objid file is destroyed and ost with highest index connected first mds not get last objid number from ost. Also if mds get last id from ost his not tell osc about this and it's produce warning about wrong del orphan request.

*Severity: minor

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12948 12948]

Description: buffer overruns could theoretically occur

Details: llapi_semantic_traverse() modifies the "path" argument by appending values to the end of the origin string, and a buffer overrun may occur. Adding buffer overrun check in liblustreapi.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13732 13732]

Description: change order of libsysio includes

Details: '#include sysio.h' should always come before '#include xtio.h'

=Changes from v1.6.2 to v1.6.3=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12192 12192]

Description: llapi_file_create() does not allow some changes

Details: add llapi_file_open() that allows specifying the file creation mode and open flags, and also returns an open file handle.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12743 12743]

Description: df doesn't work properly if diskfs blocksize != 4K

Details: Choose biggest blocksize of OST's as the LOV's blocksize.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: merge and cleanup kernel patches.

Details: Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Kernel config file for RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12446 12446]

Description: OSS needs mutliple precreate threads

Details: Add ability to start more than one create thread per OSS.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Modify the kernel config file more closer RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Define PAGE_SIZE when it isn't present.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11401 11401]

Description: client-side metadata stat-ahead during readdir(directory readahead)

Details: perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11230 11230]

Description: Tune the kernel for good SCSI performance.

Details: Set the value of /sys/block/{dev}/queue/max_sectors_kb to the value of /sys/block/{dev}/queue/max_hw_sectors_kb in mount_lustre.

*Severity: critical

Frequency: Always for filesystems larger than 2TB on 32-bit systems.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13547 13547] , [https://bugzilla.lustre.org/show_bug.cgi?id=13627 13627]

Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers.

Details: When generating the bio request for lustre file writes the sector number would overflow a temporary variable before being used for the IO. The data reads correctly from Lustre (which will overflow in a similar manner) but other file data or filesystem metadata may be corrupted in some cases.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13236 13236]

Description: TOE Kernel panic by ksocklnd

Details: offloaded sockets provide their own implementation of sendpage, can't call tcp_sendpage() directly

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13482 13482]

Description: build error

Details: fix typos in gmlnd, ptllnd and viblnd

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12932 12932]

Description: obd_health_check_timeout too short

Details: set obd_health_check_timeout as 1.5x of obd_timeout

*Severity: major

Frequency: only with quota on the root user

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12223 12223]

Description: mds_obd_create error creating tmp object

Details: When the user sets quota on root, llog will be affected and can't create files and write files.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12782 12782]

Description: /proc/sys/lnet has non-sysctl entries

Details: Updating dump_kernel/daemon_file/debug_mb to use sysctl variables

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10778 10778]

Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs

Details: races between lnd_shutdown and peer creation prevent lnd_shutdown from finishing.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13279 13279]

Description: open files rlimit 1024 reached while liblustre testing

Details: ulnds/socklnd must close open socket after unsuccessful 'say hello' attempt.

*Severity: normal

Frequency: always on directories with default striping set

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12836 12836]

Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()

Details: Avoid lov_verify_lmm_common() on directory with -1 stripe count.

*Severity: normal

Frequency: Always on ia64 patchless client, and possibly others.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12826 12826]

Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.

Details: This allows the patchless client to be loaded on architectures without this export.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13142 13142]

Description: disorder of journal start and llog_add cause deadlock.

Details: in llog_origin_connect, journal start should happen before llog_add keep the same order as other functions to avoid the deadlock.

*Severity: normal

Frequency: occasionally when using NFS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13030 13030]

Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs

Details: with NFS, the anon dentry's parent was set to itself in d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the corresponding dentry other than use rec->ur_name.

*Severity: normal

Frequency: Occasionally with failover

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12459 12459]

Description: Client eviction due to failover config

Details: after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections.

*Severity: normal

Frequency: only with liblustre clients on XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12418 12418]

Description: evictions taking too long

Details: allow llrd to evict clients directly on OSTs

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13125 13125]

Description: osts not allocated evenly to files

Details: change the condition to increase offset_idx

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13436 13436]

Description: Only those disconnect error should be returned by rq_status.

Details: In open/enqueue processs, Some errors, which will cause client disconnected, should be returned by rq_status, while other errors should still be returned by intent, then mdc or llite will detect them.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13600 13600]

Description: "lfs find -obd UUID" prints directories

Details: "lfs find -obd UUID" will return all directory names instead of just file names. It is incorrect because the directories do not reside on the OSTs.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13596 13596]

Description: MDS hang after unclean shutdown of lots of clients

Details: Never resend AST requests.

*Severity: normal

Frequency: Always, for kernels after 2.6.16

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13304 13304]

Description: Fix warning idr_remove called for id=.. which is not allocated.
Details: Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12186 12186]

Description: Fix errors in lfs documentation

Details: Fixes man pages

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly.

Details: void sending multiple quota reqs to mds, which will keep the status between the reqs.

*Severity: cleanup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13532 13532]

Description: rewrite ext2-derived code in llite/dir.c and obdclass/uuid.c

Details: rewrite inherited code (uuid parsing code from ext2 utils and readdir code from ext3) from scratch preserving functionality.

=Changes from v1.6.1 to v1.6.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?
title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12786 12786]

Description: lfs setstripe enhancement

Details: Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12211 12211]

Description: randomly memory allocation failure util

Details: Make lustre randomly failed allocating memory for testing purpose.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10786 10786]

Description: omit set fsid for export NFS

Details: fix set/restore device id for avoid EMFILE error and mark lustre fs as FS_REQUIRES_DEV for avoid problems with generate fsid.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10595 10595]

Description: Error message improvement.

Details: Merging of two LCONSOLE_ERROR_MSG into one.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12602 12606]

Description: don't use GFP_* in generic Lustre code.

Details: Use cfs_alloc_* functions and CFS_* flags for code portability.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12333 12333]

Description: obdclass is limited by single OBD_ALLOC(idarray)

Details: replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415 ]

Description: updated patchess for new RHEL4 kernel

Details: Fixed ext3-unlink-race.patch per Kalpak's comment.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13006 13006 ]

Description: warnings with build patchless client with vanila 2.6.19 and up

Details: change old ctl_table style and replace ctl_table/ctl_table_header with cfs_sysctl_table_t/cfs_sysctl_table_header_t

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13093 13093]

Description: O_DIRECT bypasses client statistics.

Details: When running with O_DIRECT I/O, neither the client rpc_stats nor read_ahead_stats were updated. Copied stats section from osc_send_oap_rpc() into async_internal().

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13249 13249]

Description: Kernel patches for SLES9 2.6.5-7.286 kernel

Details: Update target/ChangeLog/which_patch .

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12955 12955]

Description: jbd statistics

Details: Port older jbd statistics patch for sles10

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Use getpagesize() instead of PAGE_SIZE.

*Severity: major

Frequency: after network failures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12769 12769]

Description: Add sync option to mount_lustre.c

Details: Client loses data written to lustre after a network interruption.

*Severity: normal

Frequency: mds/oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog ctxt is refrenced after it has been freed.

Details: llog ctxt refcount was added to avoide the race between ctxt free and llog recovery process. Each llog user must hold ctxt refcount before it access the llog. And the llog ctxt can only be freed when its refcount is zero.

*Severity: normal

Frequency: only for SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update kernel patch for SLES10 SP1

Details: Add patch blkdev_tunables-2.6-sles10.patch to 2.6-sles10.series.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11802 11802]

Description: lustre support for RHEL5

Details: Add support for RHEL5.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11756 11756]

Description: umount blocks forever on error

Details: In result of wrong using obd_no_recov and obd_force flags client can hand if cancel or some other requests is lost.

*Severity: normal

Frequency: Only for SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13177 13177]

Description: sanity_quota fail test_1

Details: There are multiple occurences of $TSTUSR in SLES's /etc/group file, which makes TSTID[2] inunique.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9977 9977]

Description: lvbo_init failed for resource with missing objects.

Details: Fix returning error if we do stat for file with missing/corrupted objects and i_size set to all sum of size of all avaible objects. if we to truncate/write to missing object - it is recreated.

*Severity: normal

Frequency: When flocks are used.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13103 13103]

Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.

Details: Flock locks might destroy just granted lock if it could be merged with another existing flock, this is done in completion handler, so teach ldlm_cli_enquque_fini that this is a valid case for flock locks.

*Severity: normal

Frequency: Rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11974 11974]

Description: reply_lock_interpret crash due to race with it and lock cancel.

Details: Do not replay locks that are being cancelled. Do not reference locks by their address during replay, just by their handle.

*Severity: normal

Frequency: only with deactivated OSTs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11679 11679]

Description: lstripe command fails for valid OST index

Details: The stripe offset is compared to 'lov->desc.ld_tgt_count' instead of lov->desc.ld_active_tgt_count.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13147 13147]

Description: block reactivating mgc import until all deactivates complete

Details: Fix race when failing back MDT/MGS to itself (testing)

*Severity: minor

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: peer credits not enough on many OST per OSS systems.

Details: Use new lnet way to add credits as we need those for pings and ASTs

*Severity: minor

Frequency: only with liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12790 12790]

Description: Liblustre is not releasing flock locks on file close.

Details: Release flock locks on file close.

*Severity: minor

Frequency: only for RHEL4

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12839 12839]

Description: Update kernel patches for kernel-2.6.9-55.0.2.EL

Details: Remove inode-nr_unused-2.6.9-rhel4.patch from 2.6-rhel4.series Update target file and kernel config.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11327 11327 ]

Description: ASSERTION(export != NULL) failed in target_handle_connect

Details: Assetion hit is result of rare race between disconnect and connet to same nid. target_handle_connect found old connect cockie and tried to reconnect, but can't find export for this cockie.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13276 13276]

Description: Oops in read and write path when failing to allocate lock.

Details: Check if lock allocation failed and return error back.

=Changes from v1.6.0.1 to v1.6.1=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.283 (SLES 9), 2.6.9-55.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.
Starting with this release, the ldiskfs backing filesystem required by Lustre is now in its own package, lustre-ldiskfs. This package should be installed. It is versioned separately from Lustre and may be released separately in future.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12194 12194]

Description: add optional extra BUILD_VERSION info

Details: add a new environment variable (namely LUSTRE_VERS) which allows to override the lustre version.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11548 11548]

Description: Add LNET router traceability for debug purposes

Details: If a checksum failure occurs with a router as part of the IO path, the NID of the last router that forwarded the bulk data is printed so it can be identified.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10997 10997]

Description: lfs setstripe use optional parameters instead of postional parameters.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10651 10651]

Description: Nanosecond timestamp support for ldiskfs

Details: The on-disk ldiskfs filesystem has added support for nanosecond resolution timestamps. There is not yet support for this at the Lustre filesystem level.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10768 10768]

Description: 64-bit inode version

Details: : Add a on-disk 64-bit inode version for ext3 to track changes made to the inode. This will be required for version-based recovery.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11563 11563]

Description: Add -o localflock option to simulate old noflock behaviour.

Details: This will achieve local-only flock/fcntl locks coherentness.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11647 11647]

Description: update patchless client

Details: Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10589 10589]

Description: metadata RPC reduction (e.g. for rm performance)

Details: decrease the amount of synchronous RPC between clients and servers by canceling conflicing lock before the operation on the client and packing thier handles into the main operation RPC to server.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12605 12605]

Description: add #ifdef HAVE_KERNEL_CONFIG_H

Details: kernels from 2.6.19 not need include linux/config.h, but add include linux/autoconf.h in commpiler command line.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12764 12764]

Description: patchless client support for 2.6.22 kernel

Details: 2.6.22 has only one visble change, SLAB_CTOR_* constants is removed. In this case we need drop using os depended interface to kmem_cache and use cfs_mem_cache API.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats tool.

Details: Tool which collects stats by tracking value written in pid, ppid, gid and uses llstat to generate output to plot graph using plot-llstat Updated lustre/utils/Makefile.am Added lustre/utils/ltrack_stats.c

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11039 11039]

Description: 2.6.18 server support (lustre 1.6.1)

Details: Support for 2.6.18 kernels on the server side.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12678 12678]

Description: remove fs_prep_san_write operation and related patches

Details: remove the ext3-san-jdike patches which are no longer useful.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11721 11721]

Description: Add printing inode info into message about error in writepage.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11971 11971]

Description: Accessing a block bevice can re-enable I/O when Lustre is tearing down a device.

Details: dev_clear_rdonly(bdev) must be called in kill_bdev() instead of blkdev_put().

*Severity: major

Frequency: only with mballoc3 code and deep extent trees

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12861 12861]

Description: ldiskfs_ext_search_right: bad header in inode: unexpected eh_depth

Details: a wrong check of extent headers in ldiskfs_ext_search_right() can cause the filesystem to be remounted read-only.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13129 13129]

Description: server LBUG when shutting down

Details: Block umount forever until the mount refcount is zero rather than giving up after an arbitrary timeout.

*Severity: normal

Frequency: 2.6.18 servers only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12546 12546 ]

Description: ll_kern_mount() doesn't release the module reference

Details: The ldiskfs module reference count never drops down to 0 because ll_kern_mount() doesn't release the module reference.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12470 12470]

Description: server LBUG when using old ost_num_threads parameter

Details: Accept the old ost_num_threads parameter but warn that it is deprecated, and fix an off-by-one error that caused an LBUG.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11722 11722]

Description: Transient SCSI error results in persistent IO issue

Details: iobuf->dr_error is not reinitialized to 0 between two uses.

*Severity: normal

Frequency: sometimes when underlying device returns I/O errors

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11743 11743]

Description: OSTs not going read-only during write failures

Details: OSTs are not remounted read-only when the journal commit threads get I/O errors because fsfilt_ext3 calls journal_start/stop() instead of the ext3 wrappers.

*Severity: normal

Frequency: SLES10 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12538 12538]

Description: sanity-quota.sh quotacheck failed: rc = -22

Details: Quotas cannot be enabled on SLES10.

*Severity: normal

Frequency: liblustre clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12229 12229]

Description: getdirentries does not give error when run on compute nodes

Details: getdirentries does not fail when the size specified as an argument is too small to contain at least one entry

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11315 11315]

Description: OST "spontaneously" evicts client; client has imp_pingable == 0

Details: Due to a race condition, liblustre clients were occasionally evicted incorrectly.

*Severity: normal

Frequency: during server recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11203 11203]

Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING

Details: request with rq_no_resend flag not awake l_wait_event if they get a timeout.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11818 11818]

Description: MDS fails to start if a duplicate client export is detected

Details: in some rare cases it was possible for a client to connect to an MDS multiple times. Upon recovery the MDS would detect this and fail during startup. Handle this more gracefully.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12477 12477]

Description: Wrong request locking in request set processing

Details: ptlrpc_check_set wrongly uses req->rq_lock for proctect add to imp_delayed_list, in this place should be used imp_lock.

*Severity: normal

Frequency: when reconnecting

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC reconnect to OST

Details: When osc reconnect ost, OST(filter) should check whether it should grant more space to client by comparing fed_grant and cl_avail_grant, and return the granted space to client instead of "new granted" space, because client will call osc_init_grant to update the client grant space info.

*Severity: normal

Frequency: when client reconnects to OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC does a resend and replays bulk write

Details: When osc reconnect to OST, OST(filter) should clear grant info of bulk write request, because the grant info while be sync between OSC and OST when reconnect, and we should ignore the grant info these of resend/replay write req.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant space more than avaiable space sometimes.

Details: When then OST is about to be full, if two bulk writing from different clients came to OST. Accord the avaliable space of the OST, the first req should be permitted, and the second one should be denied by ENOSPC. But if the seconde arrived before the first one is commited. The OST might wrongly permit second writing, which will cause grant space > avaiable space.

*Severity: normal

Frequency: when client is evicted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12371 12371]

Description: Grant might be wrongly erased when osc is evicted by OST

Details: when the import is evicted by server, it will fork another thread ptlrpc_invalidate_import_thread to invalidate the import, where the grant will be set to 0. While the original thread will update the grant it got when connecting. So if the former happened latter, the grant will be wrongly errased because of this race.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12401 12401]

Description: Checking Stale with correct fid

Details: ll_revalidate_it should uses de_inode instead of op_data.fid2 to check whether it is stale, because sometimes, we want the enqueue happened anyway, and op_data.fid2 will not be initialized.

*Severity: normal

Frequency: only with 2.4 kernel

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12134 12134]

Description: random memory corruption

Details: size of struct ll_inode_info is to big for union inode.u and this can be cause of random memory corruption.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10818 10818]

Description: Memory leak in recovery

Details: Lov_mds_md was not free in an error handler in mds_create_object. It should also check obd_fail before fsfilt_start, otherwise if fsfilt_start return -EROFS,(failover mds during mds recovery). then the req will return with repmsg->transno = 0 and rc = EROFS. and we met hit the assert LASSERT(req->rq_reqmsg->transno == req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should be freed no matter whether fsfilt_commit success or not.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11935 11935]

Description: Not check open intent error before release open handle

Details: in some rare cases, the open intent error is not checked before release open handle, which may cause ASSERTION(open_req->rq_transno != 0), because it tries to release the failed open handle.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12556 12556]

Description: Set cat log bitmap only after create log success.

Details: in some rare cases, the cat log bitmap is set too early. and it should be set only after create log success.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12086 12086]

Description: the cat log was not initialized in recovery

Details: When mds(mgs) do recovery, the tgt_count might be zero, so the unlink log on mds will not be initialized until mds post recovery. And also in mds post recovery, the unlink log will initialization will be done asynchronausly, so there will be race between add unlink log and unlink log initialization.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12579 12597]

Description: brw_stats were being printed incorrectly

Details: brw_stats were being printed as log2 but all of them were not recorded as log2. Also remove some code duplication arising from filter_tally_{read,write}.

*Severity: normal

Frequency: rare, only in recovery.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11674 11674]

Description: ASSERTION(req->rq_type != LI_POISON) failed

Details: imp_lock should be held while iterating over imp_sending_list for prevent destroy request after get timeout in ptlrpc_queue_wait.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12689 12689]

Description: replay-single.sh test 52 fails

Details: A lock's skiplist need to be cleanup when it being unlinked from its resource list.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: Short directio read returns full requested size rather than
actual amount read.

Details: Direct I/O operations should return actual amount of bytes transferred rather than requested size.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12646 12646]

Description: sanity.sh test_77h fails with "test_77h file compare failed"

Details: test_77h uses a file which was messed by other test case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12576 12576]

Description: Not Check whether lov_tgts is NULL in some lov functions

Details: Checking whether lov_tgts is NULL in some functions.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11815 11815]

Description: replace obdo_alloc() with OBDO_ALLOC macro

Details: nothing special is done in obdo_alloc() function, and for debugging purpose, it needs to be replaced with macros.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12784 12784]

Description: bad return value and errno from fcntl call

Details: In liblustre API, errno should be a negative value if error happens.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11544 11544]

Description: ptlrpc_check_set() LBUG

Details: In case of positive reply from server and failed client bulk callback after bulk transfer shouldn't LBUG, but process this request as erroneous.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12696 12696]

Description: ASSERTION(imp->imp_conn_current) failed

Details: an assertion failure is hit if a client node boots and attempts to mount a lustre filesystem faster than RECONNECT_INTERVAL seconds.

*Severity: normal

Frequency: only for i686

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12695 12695]

Description: 1.4.11 RC1 build fails for RHEL 4, i686

Details: Fixed config variable for build.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: Updated patchess for new RHEL4 kernel

Details: Updated patch inode-nr_unused-2.6.9-rhel4.patch Updated patch jbd-stats-2.6.9.patch Updated patch qsnet-rhel4-2.6.patch Updated patch quota-deadlock-on-pagelock-core.patch Updated patch vfs_intent-2.6-rhel4.patch Updated patch vfs_races-2.6-rhel4.patch Updated series file 2.6-rhel4-titech.series Updated series file 2.6-rhel4.series Updated kernel config files

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12374 12374]

Description: lquota slave complains LBUG when reconnecting with mds or
failover in mds.

Details: quota slave depends qctxt->lqc_import to send its quota request. This pointer will be invalid if mds did failover or broke its connect to osts, which leads to LBUG.

*Severity: normal

Frequency: when qunit size is too small(less than 20M)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: write is stopped by improper -EDQUOT

Details: If the master is busy and qunit size is small enough(let's say 1M), the slave can not get quota from master on time, which will lead slave to trigger a -EQUOTA to client.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12629 12629]

Description: Deadlock during metadata tests

Details: in prune_dir_dentries(), shrink_dcache_parent() should not be called with the per-dentry lock held.

*Severity: normal

Frequency: SLES9 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12744 12744]

Description: Lustre patched kernel for SLES9 SP3 has NR_CPUS set to 8

Details: set CONFIG_NR_CPUS to 128 instead of 8.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11324 11324]

Description: LDISKFS-fs error (device sdc): ldiskfs_free_blocks

Details: a disk corruption can cause the mballoc code to assert on a double free or other extent corruptions. Handle these with ext3_error() instead of assertions.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13063 13063]

Description: lfsck built against 1.4.x cannot run against 1.6.0 lustre

Details: the definition for OBD_IOC_GETNAME changed in 1.6.0. One of the few external users of this ioctl number is lfsck's call to llapi_lov_get_uuids() and this caused lfsck to fail at startup. Add the old ioctl number to the handler so both old and new lfsck can work.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11301 11301]

Description: parallel lock callbacks

Details: Instead of sending blocking and completion callbacks as separated requests, adding them to a set and sending in parallel.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12417 12417]

Description: Disable most debugging by default

Details: To improve performance, disable most logging (for debug purposes) by default. VFSTRACE, RPCTRACE, and DLMTRACE are now off by default, and HA includes fewer messages.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11013 11013]

Description: hash tables for lists of nids, connections and uuids

Details: Hash tables noticeably help when a lot of clients connect to a server, to faster identify duplicate connections or reconnects, also to faster find export to evict in manual eviction case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11190 11190]

Description: Sometimes, when the server evict a client, and the client will not be evicted as soon as possible.

Details: In enqueue req, the error was returned by intent, instead of rq_status which make ptlrpc layer not detect this error, and does not evict the client. So enqueue error should be returned by rq_status.

*Severity: normal

Frequency: only for SLES9

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-suse-2.6.patch.

*Severity: normal

Frequency: only for sles10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update patches for SLES 10 SP1 kernel.

Details: Update the patch vfs_intent-2.6-sles10.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-rhel4-2.6.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12975 12975]

Description: Using wrong pointer in osc_brw_prep_request

Details: Access to array[-1] can produce panic if kernel compiled with CONFIG_PAGE_ALLOC enabled

*Severity: normal

Frequency: only in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13148 13148]

Description: Mark OST as early accessible if his start SYNC.

Details: osc_precreate return flag early accessible if oscc marked as OSCC_FLAG_SYNC_IN_PROGRESS.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Sometimes precreate code can triger create object on wrong ost

Details: Wrong protected or not not restored variables aftre precreate loop can produce creation object on wrong ost.

*Severity: normal

Frequency: oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog_commit_thread cleanup should sync with llog_commit_thread
start

Details: llog_commit_thread_count should be synced between llog_commit start and cleanup, so new llog_commit thread should not be started when llog_commit threads being stopped to avoid accessing some freed stuff.

*Severity: minor

Frequency: only with 10000 clients or more

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12364 12364]

Description: poor connect scaling with increasing client count

Details: Don't run filter_grant_sanity_check for more than 100 exports to improve scaling for large numbers of clients.

*Severity: minor

Frequency: nfs export on patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11970 11970]

Description: connectathon hang when test nfs export over patchless client

Details: Disconnected dentry cannot be found with lookup, so we do not need to unhash it or make it invalid

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11546 11546]

Description: open req refcounting wrong on reconnect

Details: If reconnect happened between getting open reply from server and call to mdc_set_replay_data in ll_file_open, we will schedule replay for unreferenced request that we are about to free. Subsequent close will crash in variety of ways. Check that request is still eligible for replay in mdc_set_replay_data().

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11512 11512]

Description: disable writes to filesystem when reading health_check file

Details: the default for reading the health_check proc file has changed to NOT do a journal transaction and write to disk, because this can cause reads of the /proc file to hang and block HA state checking on a healthy but otherwise heavily loaded system. It is possible to return to the previous behaviour during configure with --enable-health-write.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11658 11658 ]

Description: log_commit_thread vs filter_destroy race leads to crash

Details: Take import reference before releasing llog record semaphore

*Severity: minor

Frequency: only with huge numbers of clients

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11817 11817]

Description: Prevents from taking the superblock lock in llap_from_page for a soon died page.

Details: using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW for llap_from_page call in ll_removepage() prevents from taking the superblock lock for a soon died page.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: service threads may hog cpus when there are a lot of requests

Details: Insert cond_resched to give other threads a chance to use some CPU

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12747 12747]

Description: fix mal-formatted messages

Details: fix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages

*Severity: minor

Frequency: always in liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: wrong IS_ERR implementation in liblustre.h

Details: fix IS_ERR implementation in liblustre.h for right detect errors.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10419 10419]

Description: Correct condition for output debug message.

Details: inode i_nlink equal zero is not enough for output message about disk corruption, i_ctime and i_mode should be also checked.

*Severity: minor

Frequency: always in patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: add configure check for truncate_complete_page

Details: improve checks for exported symbols. This allow run check without
sources, but with Module.symvers shipped with kernel distribution. add check for truncate_complete_page used by patchless client.

*Severity: minor

Frequency: only run on patchless client.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12858 12858]

Description: use do_facet on sanity.sh for test handling recoverables errors

Details: use do_facet instead of direct use sysctl for set fail_loc on OST

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11778 11778]

Description: Delay client connections to MDT until fist MDT->OST connect

Details: If a client tried to create a new file before the MDT had connected to any OSTs, the create would return EIO. Now the client will simply block until the MDT connects to the first OST and the create can succeed.

*Severity: minor

Frequency: at statup only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12860 12860]

Description: mds_lov_synchronize race leads to various problems

Details: simultaneous MDT->OST connections at startup can cause the sync to abort, leaving the OSC in a bad state.

=Changes from v1.6.0 to v1.6.0.1=

*Severity: normal

Frequency: on some architectures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12404 12404]

Description: 1.6 client sometimes fails to mount from a 1.4 MDT

Details: Uninitialized flags sometimes cause configuration commands to be skipped.

*Severity: normal

Frequency: patchless clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12391 12391]

Description: missing __iget() symbol export

Details: The __iget() symbol export is missing. To avoid the need for this on patchless clients the deathrow inode reaper is turned off, and we depend on the VM to clean up old inodes. This dependency was during via the fix for bug 12181.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12848 12848]

Description: sanity.sh fail: test_52b

Details: The ll_inode_to_ext_flags() has a glitch which makes MDS return incorrect inode's flags to client.

=Changes from v1.4.10 to v1.6.0=

'''CONFIGURATION CHANGE. This version of Lustre WILL NOT INTEROPERATE with older versions automatically. In many cases a special upgrade step is needed. Please read the user documentation before upgrading any part of a 1.4.x system.'''

'''WARNING: Lustre configuration and startup changes are required with this release. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.'''

'''Support for kernels: 2.4.21-47.0.1.EL (RHEL 3), 2.6.5-7.283 (SLES 9), 2.6.9-42.0.10.EL (RHEL 4), 2.6.12.6 vanilla (kernel.org), 2.6.16.27-0.9 (SLES10)'''

'''Client support for unpatched kernels: (see https://mail.clusterfs.com/wikis/lustre/PatchlessClient) 2.6.16 - 2.6.19 vanilla (kernel.org), 2.6.9-42.0.8EL (RHEL 4)'''

'''Recommended e2fsprogs version: 1.39.cfs6'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=8007 8007]

Description: MountConf

Details: Lustre configuration is now managed via mkfs and mount commands instead of lmc and lconf. New obd types (MGS, MGC) are added for dynamic configuration management. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4482 4482]

Description: dynamic OST addition

Details: OSTs can now be added to a live filesystem

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9851 9851]

Description: startup order invariance

Details: MDTs and OSTs can be started in any order. Clients only require the MDT to complete startup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4899 4899]

Description: parallel, asynchronous orphan cleanup

Details: orphan cleanup is now performed in separate threads for each OST, allowing parallel non-blocking operation.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9862 9862]

Description: optimized stripe assignment

Details: stripe assignments are now made based on ost space available, ost previous usage, and OSS previous usage, in order to try to optimize storage space and networking resources.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4226 4226]

Description: Permanently set tunables

Details: All writable /proc/fs/lustre tunables can now be permanently set on a per-server basis, at mkfs time or on a live system.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10547 10547]

Description: Lustre message v2

Details: Add lustre message format v2.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9866 9866]

Description: client OST exclusion list

Details: Clients can be started with a list of OSTs that should be declared "inactive" for known non-responsive OSTs.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10088 10088]

Description: fine-grained SMP locking inside DLM

Details: Improve DLM performance on SMP systems by removing the single per-namespace lock and replace it with per-resource locks.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9332 9332]

Description: don't hold multiple extent locks at one time

Details: To avoid client eviction during large writes, locks are not held on multiple stripes at one time or for very large writes. Otherwise, clients can block waiting for a lock on a failed OST while holding locks on other OSTs and be evicted.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9293 9293]

Description: Multiple MD RPCs in flight.

Details: Further unserialise some read-only MDT RPCs - learn about intents. To avoid overly-overloading MDT, introduce a limit on number of MDT RPCs in flight for a single client and add /proc controls to adjust this limit.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22484 22484]

Description: client read/write statistics

Details: Add client read/write call usage stats for performance analysis of user processes. /proc/fs/lustre/llite/*/offset_stats shows non-sequential file access. extents_stats shows chunk size distribution. extents_stats_per_process show chunk size distribution per user process.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22485 22485]

Description: per-client statistics on server

Details: Add ldlm and operations statistics for each client in /proc/fs/lustre/mds|obdfilter/*/exports/

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22486 22486]

Description: improved MDT statistics

Details: Add detailed MDT operations statistics in /proc/fs/lustre/mds/*/stats

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats

Details: Add client VFS call stats, trackable by pid, ppid, or gid /proc/fs/lustre/llite/*/stats_track_[pid|ppid|gid]

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2258 2258]

Description: Dynamic service threads

Details: Within a small range, start extra service threads automatically when the request queue builds up.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11229 11229]

Description: Easy OST removal

Details: OSTs can be permanently deactivated with e.g. 'lctl conf_param lustre-OST0001.osc.active=0'

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11335 11335]

Description: MGS proc entries

Details: Added basic proc entries for the MGS showing what filesystems are served.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10998 10998]

Description: provide MGS failover

Details: Added config lock reacquisition after MGS server failover.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11461 11461]

Description: add Linux 2.4 support

Details: Added support for RHEL 2.4.21 kernel for 1.6 servers and clients

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10902 10902]

Description: plain/inodebits lock performance improvement

Details: Grouping plain/inodebits in granted list by their request modes and bits policy, thus improving the performance of search through the granted list.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11667 11667]

Description: Add "/proc/sys/lustre/debug_peer_on_timeout"

Details: liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT boolean to control whether to print peer debug info when a client's RPC times out.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11264 11264]

Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck

Details: The uninit_groups feature works in conjunction with the kernel filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed up the pass1 processing of e2fsck. This is a read-only feature in ldiskfs2 only, so older kernels and current ldiskfs cannot mount filesystems that have had this feature enabled.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10816 10816]

Description: Improve multi-block allocation algorithm to avoid fragmentation

Details: The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve allocation locality and avoid filesystem fragmentation.

*Severity: major

Frequency: mixed-endian client/server environments

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11214 11214]

Description: mixed-endian crashes

Details: The new msg_v2 system had some failures in mixed-endian environments.

*Severity: major

Frequency: when an incorrect nid is specified during startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10734 10734]

Description: ptlrpc connect to non-existant node causes kernel crash

Details: LNET can't be re-entered from an event callback, which happened when we expire a message after the export has been cleaned up. Instead, hand the zombie cleanup off to another thread.

*Severity: major

Frequency: only if OST filesystem is corrupted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9829 9829]

Description: client incorrectly hits assertion in ptlrpc_replay_req()

Details: for a short time RPCs with bulk IO are in the replay list, but replay of bulk IOs is unimplemented. If the OST filesystem is corrupted due to disk cache incoherency and then replay is started it is possible to trip an assertion. Avoid putting committed RPCs into the replay list at all to avoid this issue.

*Severity: major

Frequency: liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: System hang on startup

Details: This bug allowed the liblustre (e.g. catamount) client to return to the app before handling all startup RPCs. This could leave the node unresponsive to lustre network traffic and manifested as a server ptllnd timeout.

*Severity: major

Frequency: only for devices with external journals

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10719 10719]

Description: Set external device read-only also

Details: During a commanded failover stop, we set the disk device read-only while the server shuts down. We now also set any external journal device read-only at the same time.

*Severity: major

Frequency: when setting specific ost indicies

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11149 11149]

Description: QOS code breaks on skipped indicies

Details: Add checks for missing OST indicies in the QOS code, so OSTs created with --index need not be sequential.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12123 12123]

Description: ENOENT returned for valid filehandle during dbench.

Details: Check if a directory has children when invalidating dentries associated with an inode during lock cancellation. This fixes an incorrect ENOENT sometimes seen for valid filehandles during testing with dbench.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11330 11330]

Description: a large application tries to do I/O to the same resource and dies in the middle of it.

Details: Check the req->rq_arrival time after the call to ost_brw_lock_get(), but before we do anything about processing it & sending the BULK transfer request. This should help move old stale pending locks off the queue as quickly as obd_timeout.

*Severity: minor

Frequency: SFS test only (otherwise harmless)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6062 6062]

Description: SPEC SFS validation failure on NFS v2 over lustre.

Details: Changes the blocksize for regular files to be 2x RPC size, and not depend on stripe size.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6380 6380]

Description: Fix client-side osc byte counters

Details: The osc read/write byte counters in /proc/fs/lustre/osc/*/stats are now working

*Severity: minor

Frequency: always as root on SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10667 10667]

Description: Failure of copying files with lustre special EAs.

Details: Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov").

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10345 10345]

Description: Refcount LNET uuids

Details: The global LNET uuid list grew linearly with every startup; refcount repeated list entries instead of always adding to the list.

*Severity: minor

Frequency: only for kernels with patches from Lustre below 1.4.3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: Remove old rdonly API

Details: Remove old rdonly API which unused from at least lustre 1.4.3

*Severity: minor

Frequency: when upgrading from 1.4 while trying to change parameters

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11692 11692]

Description: The wrong (new) MDC name was used when setting parameters for upgraded MDT's. Also allows changing of OSC (and MDC) parameters if --writeconf is specified at tunefs upgrade time.

=Changes from v1.6.0 to v1.4.11=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12014 12014]

Description: ASSERTION failures when upgrading to the patchless zero-copy socklnd

Details: This bug affects "rolling upgrades", causing an inconsistent protocol version negotiation and subsequent assertion failure during rolling upgrades after the first wave of upgrades.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10916 10916]

Description: added LNET self test

Details: landing b_self_test

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12316 12316]

Description: Add OFED1.2 support to o2iblnd

Details: o2iblnd depends on OFED's modules, if out-tree OFED's modules are installed (other than kernel's in-tree infiniband), there could be some problem while insmod o2iblnd (mismatch CRC of ib_* symbols). If extra Module.symvers is supported in kernel (i.e, 2.6.17), this link provides solution: https://bugs.openfabrics.org/show_bug.cgi?id=355 if extra Module.symvers is not supported in kernel, we will have to run the script in bug 12316 to update $LINUX/module.symvers before building o2iblnd. More details about this are in bug 12316.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11680 11680]

Description: make panic on lbug configurable

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13288 13288]

Description: Initialize cpumask before use

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11223 11223]

Details: Change "dropped message" CERRORs to D_NETERROR so they are logged instead of creating "console chatter" when a lustre timeout races with normal RPC completion.

*Severity: minor

Details: lnet_clear_peer_table can wait forever if user forgets to clear a lazy portal.

*Severity: minor

Details: libcfs_id2str should check pid against LNET_PID_ANY.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12227 12227]

Description: cfs_duration_{u,n}sec() wrongly calculate nanosecond part of struct timeval.

Details: do_div() macro is used incorrectly.

=Changes from v1.4.9 to v1.6.0=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10316 10316]

Description: Fixed console chatter in case of -ETIMEDOUT.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: Added D_NETTRACE for recording network packet history (initially only for ptllnd). Also a separate userspace ptllnd facility to gather history which should really be covered by D_NETTRACE too, if only CDEBUG recorded history in userspace.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11094 11094]

Description: Multiple instances for o2iblnd

Details: Allow multiple instances of o2iblnd to enable networking over multiple HCAs and routing between them.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12458 12458]

Description: Assertion failure in kernel ptllnd caused by posting passive bulk buffers before connection establishment complete.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12455 12455]

Description: A race in kernel ptllnd between deleting a peer and posting new communications for it could hang communications - manifesting as "Unexpectedly long timeout" messages.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12432 12432]

Description: Kernel ptllnd lock ordering issue could hang a node.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12016 12016]

Description: node crash on socket teardown race

*Severity: major

Frequency: after Ptllnd timeouts and portals congestion

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11659 11659]

Description: Credit overflows

Details: This was a bug in ptllnd connection establishment. The fix implements better peer stamps to disambiguate connection establishment and ensure both peers enter the credit flow state machine consistently.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11394 11394]

Description: kptllnd didn't propagate some network errors up to LNET

Details: This bug was spotted while investigating 11394. The fix ensures network errors on sends and bulk transfers are propagated to LNET/lustre correctly.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11616 11616]

Description: o2iblnd handle early RDMA_CM_EVENT_DISCONNECTED.

Details: If the fabric is lossy, an RDMA_CM_EVENT_DISCONNECTED callback can occur before a connection has actually been established. This caused an assertion failure previously.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11201 11201]

Description: lnet deadlock in router_checker

Details: turned ksnd_connd_lock, ksnd_reaper_lock, and ksock_net_t:ksnd_lock into BH locks to eliminate potential deadlock caused by ksocknal_data_ready() preempting code holding these locks.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11126 11126]

Description: Millions of failed socklnd connection attempts cause a very slow FS

Details: added a new route flag ksnr_scheduled to distinguish from ksnr_connecting, so that a peer connection request is only turned down for race concerns when an active connection to the same peer is under progress (instead of just being scheduled).

*Severity: normal

Frequency: rare

Description: gmlnd ignored some transmit errors when finalizing lnet messages.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11472 11472]

Description: Changed the default kqswlnd ntxmsg=512

*Severity: minor

Frequency: rare

Description: Ptllnd didn't init kptllnd_data.kptl_idle_txs before it could be possibly accessed in kptllnd_shutdown. Ptllnd should init kptllnd_data.kptl_ptlid2str_lock before calling kptllnd_ptlid2str.

*Severity: minor

Frequency: rare

Description: ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.

*Severity: minor

Frequency: rare

Description: the_lnet.ln_finalizing was not set when the current thread is about to complete messages. It only affects multi-threaded user space LNet.

*Severity: minor

Frequency: 'lctl peer_list' issued on a mx net

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12237 12237]

Description: Enable lctl's peer_list for MXLND

=[http://wiki.lustre.org/index.php?title=Change_Log_1.4 Change logs for 1.4.x releases]=

Change Log 1.6

2009-06-10T01:38:43Z

Stinson1947: /* Changes from v1.6.6 to v1.6.7 */

=Changes from v1.6.7.1 to v1.6.7.2=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-78.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.37 (SLES 10)''' 
''' 2.6.18-92.1.26.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):'''
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19601 19601]'''
Severity: enhancement 
Description: Update kernel to RHEL5.2 2.6.18-92.1.26.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19453 19453]'''
Severity: critical, only with RHEL4/SLES9 MDS 
Description: user xattr corruption 
Details: setting extended attributes can corrupt other attributes stored in the inode body. Both user & lustre internal (LOV EA) attributes are concerned. In the latter case, the lustre filesystem can be damaged.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16504 16504]'''
Severity: enhancement 
Description: Update kernel to RHEL4.7 2.6.9-78.0.22.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18289 18289]'''
Severity: enhancement 
Description: allow the use of the kernel provided OFED stack 
Details: This patch allows for lbuild to use the OFED stack provided by the kernel vendor. For the RHEL4 and RHEL5 kernels, we enable the kernel supplied OFED stack.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18775 18775]'''
Severity: enhancement 
Description: improve lctl set/get_param 
Details: handle the bad options, support more than one arguments, add '-F' option to append the indicator to the parameters.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19212 19212]'''
Severity: enhancement 
Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19495 19495]'''
Severity: major 
Frequency: rare 
Description: fix lqs' reference which won't be put in some situations. 
Details: This patch fixes:
1. In quota_check_common(), this function will check quota
for user and group, but only send one return via "pending".
In most cases, the pendings should be same. But that is not
always the case.
2. If quotaoff runs between lquota_chkquota() and
lquota_pending_commit(), the same thing will happen too.
That is why it comes:
- if (!ll_sb_any_quota_active(qctxt->lqc_sb))
- RETURN(0);

=Changes from v1.6.7 to v1.6.7.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)'''
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''Output of lfs quota has been made less detailed by default, old (verbose) output can be obtained by using -v option.'''

'''File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929]'''

'''A new Lustre ADIO driver is available for MPICH2-1.0.7.'''

'''NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=17630 17630]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18810 18810]'''
Severity: major 
Frequency : rare 
Description: fix racy locking of mballoc block bitmaps causing BUG 
Details: The locking of the mballoc buddy bitmap and the in-memory block bitmap was using two different spin locks in some cases. This made it possible to incorrectly access the mballoc bitmap while another process was modifying it, causing a sanity assertion to fail. While no on-disk corruption was reported, there was some risk of this happening.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18480 18480]'''
Frequency: common 
Description: correct count of recoverable clients 
Details: if recovery failed for client for some reasons (goal inode or something else) server can wait failed clients for finish recovery.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18695 18695]'''
Severity: critical 
Frequency: when directories had atime set in past (e.g. untar) 
Descriptoin: Lustre detected file system corruption with inode out of bounds 
Details: don't update i_size on MDS_CLOSE for directories. This causes directory corruptions on the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18895 18895]'''
Severity: normal 
Frequency: on failed service startup 
Description: replay-single test_61d: LustreError: 17392:0:(lprocfs_status.c:859:lprocfs_obd_cleanup()) ASSERTION(obd->obd_proc_exports_entry->subdir == NULL) failed 
Details: cleanup lprocfs entries on error.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18903 18903]'''
Severity: normal 
Frequency: rare 
Description: llmount.sh: BUG: spinlock wrong owner on CPU#0, mount.lustre/8180 
Details: fix typo in import_set_conn() causing spinlock corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18859 18859]'''
Severity: normal 
Frequency: rare, only when using group lock on client 
Description: Group Lock in Lustre: write call is blocking 
Details: fix wrong return code of ll_is_file_contended() causing processes to be blocked indefinitely.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17757 17757]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(new_lock != NULL) failed:op 0x1 lockh 0x0 
Details: DISP_OPEN_LOCK is not cleared properly in reconstruct_open() since intent_disposition() is used instead of intent_set_disposition().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15428 15428]'''
Severity: major 
Frequency: occasional when using software RAID5 
Description: raid5 panics 
Details: fix panic in raid5_end_read_request().

=Changes from v1.6.6 to v1.6.7=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.314 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.31 (SLES 10)''' 
''' 2.6.18-92.1.17.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Client support for unpatched kernels:
We do not recommend using patchless RHEL4 clients with kernels prior to
2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

'''A new quota file format was introduced in 1.6.6 (for 2.6.16+ kernels). The format conversion from prior releases is handled transparently, but releases older than 1.6.6/1.8.0 don't understand this new format. The automatic format conversion can be avoided by running the following commands on the MDS and OSS servers (for pre 1.4.12-1.6.5 quota files):
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug1" $MDTDEV'
'''or (for 1.4.12/1.6.5 quota files)
'tunefs.lustre --param="mdt.quota_type=ug2" $MDTDEV',
'tunefs.lustre --param="ost.quota_type=ug2" $MDTDEV'
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16498 16498]'''
Severity: normal 
Description: Get RAID stripe size from superblock 
Details: RAID striping parameters are now saved in the superblock itself, so we should use these parameters instead of having to specify a mount option each time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: major 
Description: Disable big-endian ldiskfs server support. 
Details: The ldiskfs code is not tested on big-endian machines, and there are known compatibility problems in the extents code when running for most of the kernels. Print an error message and refuse to mount, in case anyone tests this. For existing filesystems that might have been created in this way it is possible to mount with the "bigendian_extents" option to force the mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15983 15983]'''
Severity: major 
Description: workaround for OOM from o2iblnd 
Details: OFED needs allocate big chunk of memory for QP while creating connection for o2iblnd, OOM can happen if no such a contiguous memory chunk. QP size is decided by concurrent_sends and max_fragments of o2iblnd, now we permit user to specify smaller value for concurrent_sends of o2iblnd(i.e: concurrent_sends=7), which will decrease memory block size required by creating QP.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15093 15093]'''
Severity: major 
Description: Support Zerocopy receive of Chelsio device 
Details: Chelsio driver can support zerocopy for iov[1] if it's contiguous and large enough.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13490 13490]'''
Severity: normal 
Description: fix credit flow deadlock in uptllnd

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16308 16308]'''
Severity: normal 
Description: finalize network operation in reasonable time 
Details: conf-sanity test_32a couldn't stop ost and mds because it tried to access non-existent peer and tcp connect took quite long before timing out.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16338 16338]'''
Severity: major 
Description: Continuous recovery on 33 of 413 nodes after lustre oss failure 
Details: Lost reference on conn prevents peer from being destroyed, which could prevent new peer creation if peer count has reached upper limit.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16102 16102]'''
Severity: normal 
Description: LNET Selftest results in Soft lockup on OSS CPU 
Details: only hits when 8 or more o2ib clients involved and a session is torn down with 'lst end_session' without preceeding 'lst stop'.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16321 16321]'''
Severity: minor 
Description: concurrent_sends in IB LNDs should not be changeable at run time
Details: concurrent_sends in IB LNDs should not be changeable at run time

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18238 18238]'''
Severity: normal 
Frequency: rare 
Description: panic in mds_open 
Details: don't confuse mds_finish_transno() with PTR_ERR(-ENOENT)

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17972 17972]'''
Severity: normal 
Frequency: rare 
Description: stuck in cache_remove_extent() or panic with accessing to already freed look. 
Details: release lock refernce only after add page to pages list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17636 17636]'''
Severity: normal 
Frequency: always with long access acl 
Descriptoin: mds can't pack reply with long acl. 
Details: mds don't control size of acl but they limited by reint/getattr reply buffer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18049 18049]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: aborting recovery hang on MDS 
Details: don't throttle destroy RPCs for the MDT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18018 18018]'''
Severity: major 
Frequency: on remount 
Description: external journal device not working after the remount 
Details: clear dev_rdonly flag for external journal devices in blkdev_put()

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17802 17802]'''
Severity: minor 
Frequency: rare 
Description: shutdown vs evict race 
Details: client_disconnect_export vs connect request race. if client will evicted at this time - we start invalidate thread without referece to import and import can be freed at same time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16693 16693]'''
Severity: minor 
Frequency: always 
Description: shrink LOV EAs before replying 
Details: correctly adjust LOV EA buffer for reply.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16081 16081]'''
Severity: normal 
Frequency: rare 
Description: don't skip ost target if they assigned to file 
Details: Drop slow OSCs if we can, but not for requested start idx. This means "if OSC is slow and it is not the requested start OST, then it can be skipped, otherwise skip it only if it is inactive/recovering/out-of-space.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17201 17201]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: normal 
Frequency: rare, need ACLs on inode. 
Description: client can't handle ost additional correctly 
Details: if ost was added after client connected to mds client can have hit lnet_try_match_md ... to big messages to wide striped files. in this case need teach client to handle config events about add lov target and update client max ea size at that event.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17374 17374]'''
Severity: enhancement 
Description: Update to sles9 kernel-2.6.5-7.314.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17458 17458]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16578 16578]'''
Severity: normal 
Frequency: Create a symlink file with a very long name 
Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count) 
Details: If there is no extra space in the request for early cancels, ldlm_req_handles_avail() returns 0 instead of a negative value.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16492 16492]'''
Severity: major 
Frequency: rare, during racing unlink and create in same directory 
Description: mds is deadlocked 
Details: in rare cases, inode in directory can have inode number lower than parent inode number. This produces wrong locking order during open and parallel unlink. Teach mds_open to grab locks in inode number order, not parent -> child order.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=1819 1819]'''
Severity: enhancement 
Description: Add /proc entry for import status 
Details: The mdc, osc, and mgc import directories now have an import directory that contains useful import data for debugging connection problems.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15966 15966]'''
Severity: enhancement 
Description: Re-disable certain /proc logging 
Details: Enable and disable client's offset_stats, extents_stats and extents_stats_per_process stats logging on the fly.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16643 16643]'''
Severity: enhancement 
Description: Generic /proc file permissions 
Details: Set /Proc file permissions in a more generic way to enable non-root users operate on some /proc files.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16561 16561]'''
Severity: major 
Description: Hitting mdc_commit_close() ASSERTION 
Details: Properly handle request reference release in ll_release_openhandle().

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Description: Prevent import from entering FULL state when server in recovery

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16750 16750]'''
Severity: normal 
Frequency: only with devices that have a ':' in the name 
Description: service mount cannot take device name with ':' 
Details: Only when device name contains ":/" will mount treat it as client mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16566 16566]'''
Severity: enhancement 
Description: Upcall on Lustre log has been dumped 
Details: Allow for a user mode script to be called once a Lustre log has been dumped. It passes the filename of the dumped log to the script, the location of the script can be specified via /proc/sys/lnet/debug_log_upcall.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16583 16583]'''
Severity: minor 
Frequency: rare 
Description: avoid messages about idr_remove called for unallocated id. 
Details: Move s_dev assigment for clustered NFS to end of initialization, to avoid problem with error handling.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16109 16109]'''
Severity: minor 
Frequency: rare 
Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages 
Details: When connection is reused this not moved from CONN_UNUSED_HASH into CONN_USED_HASH and this prodice warning when put connection again in unused hash.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16573 16573]'''
Severity: enhancement 
Description: Export bytes_read/bytes_write count on OSC/OST.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14840 14840]'''
Severity: major 
Description: quota recovery deadlock during mds failover 
Details: This patch includes att18982, att18236, att18237 in bz14840. 
Solve the problems: 
1. fix osts hang when mds does failover with quotaon 
2. prevent watchdog storm when osts threads wait for the recovery of mds 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14095 14095]'''
Severity: enhancement 
Description: Add lustre_start utility to start or stop multiple Lustre servers from a CSV file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17026 17026]'''
Severity: normal 
Description: kptllnd_peer_check_sends() ASSERTION(!in_interrupt()) failed 
Details: fix stack overflow in distributed lock manager by defering export eviction after a failed callback to the ELT thread instead of handling it in the DLM interpret routine.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12800 12800]'''
Severity: enhancement 
Description: More exported tunables for mballoc 
Details: Add support for tunable preallocation window and new tunables for large/small requests

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16680 16680]'''
Severity: normal 
Description: Detect corruption of block bitmap and checking for preallocations 
Details: Checks validity of on-disk block bitmap. Also it does better checking of number of applied preallocations. When corruption is found, it turns filesystem readonly to prevent further corruptions.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17197 17197]'''
Severity: normal 
Description: ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed 
Details: Once the unmatched stride IO mode is detected, shrink the stride-ahead window to 0. If it does hit cache miss, and read pattern is still stride-io mode, does not reset the stride window, but also does not increase the stride window length in this case.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
Severity: normal 
Frequency: only for big-endian servers 
Description: Check if system is big-endian while mounting fs with extents 
Details: Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. Can be bypassed with "bigendian_extents" mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16860 16860]'''
Severity: normal 
Description: Excessive recovery window 
Details: With AT enabled, the recovery window can be excessively long (6000+ seconds). To address this problem, we no longer use OBD_RECOVERY_FACTOR when extending the recovery window (the connect timeout no longer depends on the service time, it is set to INITIAL_CONNECT_TIMEOUT now) and clients report the old service time via pb_service_time.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16522 16522]'''
Severity: normal 
Description: Watchdog triggered on MDS failover 
Details: enable OBD_CONNECT_MDT flag when connecting from the MDS so that the OSTs know that the MDS "UUID" can be reused for the same export from a different NID, so we do not need to wait for the export to be evicted.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16839 16839]'''
Severity: normal 
Frequency: start MDS on uncleanly shutdowned MDS device 
Description: ll_sync thread stay in waiting mds<>ost recovery finished 
Details: fix race due to two ll_sync threads processing the same lov target causing random failures in various tests. The solution is to send ACTIVATE event only if connect already finished and import is in FULL state.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17895 17895]'''
Severity: major 
Frequency: rare, only if using MMP with Linux RAID 
Description: MMP doesn't work with Linux RAID 
Details: While using HA for Lustre servers with Linux RAID, it is possible that MMP will not detect multiple mounts. To make this work we need to unplug the device queue in RAID when the MMP block is being written. Also while reading the MMP block, we should read it from disk and not the cached one.

=Changes from v1.6.5.1 to v1.6.6=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.312 (SLES 9)''' 
''' 2.6.9-67.0.22.EL (RHEL 4)''' 
''' 2.6.16.60-0.27 (SLES 10)''' 
''' 2.6.18-92.1.10.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Recommended e2fsprogs version: 1.40.11-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15272 15272]'''
Severity: normal 
Description: ptl_send_rpc hits LASSERT when ptl_send_buf fails 
Details: only hits under out-of-memory situations

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: enhancement 
Description: Add support for downgrading pools-striped files 
Details: The MDS can understand the new LOV magic from pool striped files and will automatically convert them to the standard striping format for clients (pools will be available in a future release).

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15975 15975]'''
Severity: normal 
Frequency: occasionally, only on patchless client 
Description: add workaround for race between add/remove dentry from hash

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16717 16717]'''
Severity: minor 
Frequency: only during testing 
Description: LBUG when llog conf file is full 
Details: When llog bitmap is full, ENOSPC should be returned for plain log.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
Severity: normal 
Frequency: occasionally, during recovery 
Description: Prevent import from entering FULL state when server in recovery 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
Severity: normal 
Frequency: rare 
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
Severity: normal 
Frequency: on recovery 
Description: I/O failures after umount during fail back 
Details: if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare 
Description: avoid ASSERTION(client_stat->nid_exp_ref_count == 0) failed 
Details: release reference to stats when client disconnected, not when export destroyed for avoid races when client destroyed after main ost export.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16679 16679]'''
Severity: normal 
Frequency: when adding OSTs to a running filesystem 
Description: more cleanup in mds_lov 
Details: add workaround for get valid ost count for avoid warnings about drop too big messages, not init llog cat under semphore which can be blocked on reconnect and break normal replay, fix access to wrong pointer.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
Severity: normal 
Frequency: only when connecting 1.6.5 clients to 1.6.4 or earlier servers 
Description: Early reply size mismatch, MGC loses connection 
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16006 16006]'''
Severity: normal 
Frequency: rare 
Description: statfs sometimes returns stale values on the client 
Details: restore missing copy oi_flags to lov requests.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16188 16188]'''
Severity: enhancement 
Description: Update to SLES9 kernel-2.6.5-7.312. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16503 16503]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.22.EL. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16317 16317]'''
Severity: minor 
Frequency: when clients reconnect to server 
Description: per-export statistics in /proc are broken 
Details: recreate /proc entries for clients when they reconnect.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16080 16080]'''
Severity: normal 
Frequency: when adding OSTs to a mounted filesystem 
Description: don't fail open with -ERANGE 
Details: if client connected until mds will be know about real ost count get LOV EA can be fail because mds not allocate enougth buffer for LOV EA.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16101 16101]'''
Severity: normal 
Frequency: only for filesystems larger than 8TB 
Description: ldiskfs BUG ldiskfs_mb_use_best_found() 
Details: The ldiskfs mballoc3 code was using a __u16 to store the group number, but with 8TB+ filesystems there are more than 65536 groups, causing an oops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15576 15576]'''
Severity: normal 
Frequency: rare 
Description: Resolve device initialization race 
Details: Prevent proc handler from accessing devices added to the obd_devs array but yet be intialized.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15308 15308]'''
Severity: enhancement 
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16190 16190]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16318 16318]'''
Severity: normal 
Frequency: rare, on PPC clients 
Description: don't swab ost objects in response about directory, because this not exist. 
Details: bug similar bug 14856, but in different function.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15754 15754]'''
Severity: enhancement 
Description: lfs quota tool enhancements 
Details: added units specifiers support for setquota, default to current uid/gid for quota report, short quota stats by default, nonpositional parameters for setquota, added llapi_quotactl manual page.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16037 16037]'''
Severity: normal 
Frequency: only on 32-bit clients with more than 1GB of RAM 
Description: Client runs out of low memory 
Details: Consider only lowmem when counting initial number of llap pages

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15625 15625]'''
Severity: enhancement 
Description: optional service tags registration 
Details: if the "service tags" package is installed on a Lustre node When the filesystem is mounted, a local-node service tag will be created. See http://inventory.sun.com/ for more information about the Service Tags asset management system.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15825 15825]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: Kernel BUG tries to release flock 
Details: Lustre does not destroy flock lock before last reference goes away. So always drop flock locks when client is evicted and perform unlock regardless of successfulness of speaking to MDS.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16189 16189]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.20. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]'''
Severity: normal 
Frequency: rare, only during unmount 
Description: add refcount for osc callbacks, so avoid panic on shutdown 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16014 16014]'''
Severity: normal 
Frequency: only if OSTs have been removed or non-sequential OST index used 
Description: Kernel panic with find ost index. 
Details: lov_obd have panic if some OST's have sparse indexes.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15865 15865]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15924 15924]'''
Severity: major 
Frequency: only if client is mounted with "-o flock" 
Description: do not process already freed flock 
Details: flock can possibly be freed by another thread before it reaches to ldlm_flock_completion_ast.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14480 14480]'''
Severity: normal 
Frequency: only if client is mounted with "-o flock" 
Description: LBUG during stress test 
Details: Need properly lock accesses the flock deadlock detection list.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15837 15837]'''
Severity: minor 
Frequency: rare 
Description: oops in page fault handler 
Details: kernel page fault handler can return two special 'pages' in error case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15716 15716]'''
Severity: minor 
Frequency: rare, during recovery 
Description: timeout with invalidate import. 
Details: ptlrpcd_check call obd_zombie_impexp_cull and wait request which should be handled by ptlrpcd. This produce long age waiting and -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14742 14742]'''
Severity: normal 
Frequency: rare 
Description: ASSERTION(CheckWriteback(page,cmd)) failed 
Details: badly clear PG_Writeback bit in ll_ap_completion can produce false positive assertion.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15779 15779]'''
Severity: normal 
Frequency: only with broken builds/installations 
Description: no LBUG if lquota.ko and fsfilt_ldiskfs.ko are different versions 
Details: just return an error to a user, put a console error message

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15741 15741]'''
Severity: enhancement 
Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15742 15742]'''
Severity: enhancement 
Description: Update to RHEL4 kernel-2.6.9-67.0.15. 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14134 14134]'''
Severity: enhancement 
Description: enable MGS and MDT services start separately 
Details: add a 'nomgs' option in mount.lustre to enable start a MDT with a co-located MGS without starting the MGS, which is a complement to 'nosvc' mount option.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]'''
Severity: normal 
Frequency: always, on big-endian systems 
Description: cleanup in ptlrpc code, related to PPC platform 
Details: store magic in native order avoid panic's in recovery on PPC node and forbid from this error in future. Also fix posibily of twice swab data. Fix get lov striping to userpace.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15756 15756]'''
Severity: normal 
Frequency: rare, replay get lost on server 
Description: server incorrectly drop resent replays lead to recovery failure. 
Details: do not drop replay according to msg flags, instead we check the per-export recovery request queue for duplication of transno.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14835 14835]'''
Severity: normal 
Frequency: after recovery 
Description: precreate to many object's after del orphan. 
Details: del orphan st in oscc last_id == next_id and this triger growing count of precreated objects. Set flag LOW to skip increase count OF precreated objects.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
Severity: normal 
Frequency: rare, on clear nid stats 
Description: ASSERTION(client_stat->nid_exp_ref_count == 0) 
Details: when clean nid stats sometimes try destroy live entry, and this produce panic in free.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15575 15575]'''
Severity: major 
Frequency: occasionally since 1.6.4 
Description: Stack overflow during MDS log replay 
Details: ease stack pressure by using a thread dealing llog_process.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]'''
Severity: minor 
Frequency: very rare 
Description: MDT cannot be unmounted, reporting "Mount still busy" 
Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15443 15443]'''
Severity: normal 
Frequency: rare 
Description: wait until IO finished before start new when do lock cancel. 
Details: VM protocol want old IO finished before start new, in this case need wait until PG_writeback is cleared until check dirty flag and call writepages in lock cancel callback.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12888 12888]'''
Severity: normal 
Frequency: rare 
Description: mds_mfd_close() ASSERTION(rc == 0) 
Details: In mds_mfd_close(), we need protect inode's writecount change within its orphan write semaphore to prevent possible races.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14645 14645]'''
Severity: minor 
Frequency: rare, on shutdown ost 
Description: don't hit live lock with umount ost. 
Details: shrink_dcache_parent can be in long loop with destroy dentries, use shrink_dcache_sb instead.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14949 14949]'''
Severity: minor 
Frequency: only when echo_client is used 
Description: don't panic with use echo_client 
Details: echo client pass NULL as client nid pointer and this produce NULL pointer dereference.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15278 15278]'''
Severity: normal 
Frequency: Always on 32-bit PowerPC systems 
Description: fix build on PPC32 
Details: compile code with -m64 flag produce wrong object file for PPC32.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15574 15574]'''
Severity: normal 
Frequency: rare 
Description: MDS LBUG: ASSERTION(!IS_ERR(dchild)) 
Details: In reconstruct_* functions, LASSERTs on both the data supplied by a client, and the data on disk are dangerous and incorrect. Change them with client eviction.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15346 15346]'''
Severity: enhancement 
Description: skiplist implementation simplification 
Details: skiplists are used to group compatible locks on granted list that was implemented as tracking first and last lock of each lock group the patch changes that to using doubly linked lists

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14693 14693]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15932 15932]'''
Severity: normal 
Frequency: blocks per group < blocksize*8 and uninit_groups is enabled 
Description: ldiskfs error: XXX blocks in bitmap, YYY in gd 
Details: If blocks per group is less than blocksize*8, set rest of the bitmap to 1.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15953 15953]'''
Severity: normal 
Description: more ldlm soft lockups 
Details: In ldlm_resource_add_lock(), call to ldlm_resource_dump() starve other threads from the resource lock for a long time in case of long waiting queue, so change the debug level from D_OTHER to the less frequently used D_INFO.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]'''
Severity: enhancement 
Description: add -gid, -group, -uid, -user options to lfs find 

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15284 15284]'''
Severity: enhancement 
Description: tool to recover objects put in lost+found by e2fsck 
Details: OST crashes and subsequent e2fsck can lead to objects being moved to lost+found directory. Using the "ll_recover_lost_found_objs" tool, these objects can be retrieved and data can be salvaged by using the object ID saved in the fid.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15758 15758]'''
Severity: minor 
Frequency: rare 
Description: this bug _only_ happens when inode quota limitation is very low (less than 12), so that inode quota unit is 1 at initialization. 
Details: if remaining quota equates 1, it is a sign to demonstate that quota is effective now. So least quota qunit should be 2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15950 15950]'''
Severity: normal 
Frequency: rare, using O_DIRECT only 
Description: Hung threads in invalidate_inode_pages2_range 
Details: The direct IO path doesn't call check_rpcs to submit a new RPC once one is completed. As a result, some RPCs are stuck in the queue and are never sent.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15684 15684]'''
Severity: normal 
Frequency: rare, during shutdown 
Description: Procfs and llog threads access destoryed import sometimes. 
Details: Sync the import destoryed process with procfs and llog threads by the import refcount and semaphore.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15674 15674]'''
Severity: major 
Description: mds fails to respond, threads stuck in ldlm_completion_ast 
Details: Sort source/child resource pair after updating child resource.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16226 16226]'''
Severity: major 
Frequency: rare 
Description: kernel BUG at ldiskfs2_ext_new_extent_cb 
Details: If insertion of an extent fails, then discard the inode preallocation and free data blocks else it can lead to duplicate blocks.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16199 16199]'''
Severity: normal 
Description: don't always update ctime in ext3_xattr_set_handle() In some cases the ctime should not be updated, for example for 2.0->1.8 compatibility it is necessary to delete an xattr and it should not update the ctime.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15058 15058]'''
Severity: normal 
Description: add quota statistics 
Details: 1. sort out quota proc entries and proc code. 2. add quota statistics

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16125 16125]'''
Severity: normal 
Frequency: often 
Description: quotas are not honored with O_DIRECT 
Details: all writes with the flag O_DIRECT will use grants which leads to this problem. Now using OBD_BRW_SYNC to guard this.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15713 15713]'''
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16362 16362]'''
Severity: major 
Frequency: rare 
Description: Assertion in iopen_connect_dentry in 1.6.3 
Details: looking up an inode via iopen with the wrong generation number can populate the dcache with a disconneced dentry while the inode number is in the process of being reallocated. This causes an assertion failure in iopen since the inode's dentry list contains both a connected and disconnected dentry.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16496 16496]'''
Severity: normal 
Description: assertion failure in ldlm_handle2lock() 
Details: fix a race between class_handle_unhash() and class_handle2object() introduced in lustre 1.6.5 by bug 13622.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
Severity: minor 
Frequency: rare 
Description: Pools downgrade compatibility 
Details: Files striped across pools in future (1.8) releases will be properly understood if the server is downgraded to this version.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12755 12755]'''
Severity: minor 
Frequency: rare 
Description: Kernel BUG: sd_iostats_bump: unexpected disk index 
Details: remove the limit of 256 scsi disks in the sd_iostat patch

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16494 16494]'''
Severity: minor 
Frequency: rare 
Description: oops in sd_iostats_seq_show() 
Details: unloading/reloading the scsi low level driver triggers a kernel bug when trying to access the sd iostat file.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16404 16404]'''
Severity: major 
Frequency: rare 
Description: Kernel panics during QLogic driver reload 
Details: REQ_BLOCK_PC requests are not handled properly in the sd iostat patch, causing memory corruption.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16140 16140]'''
Severity: minor 
Description: journal_dev option does not work in b1_6 
Details: pass mount option during pre-mount.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10555 10555]'''
Severity: enhancement 
Description: Add a FIEMAP (FIle Extent MAP) ioctl for ldiskfs 
Details: FIEMAP ioctl will allow an application to efficiently fetch the extent information of a file. It can be used to map logical blocks in a file to physical blocks in the block device.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16972 16972]'''
Severity: normal 
Frequency: only with adaptive timeout enabled 
Description: DEBUG_REQ() bad paging request 
Details: ptlrpc_at_recv_early_reply() should not modify req->rq_repmsg because it can be accessed by reply_in_callback() without the rq_lock held.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16813 16813]'''
Severity: normal 
Frequency: only on Cray X2 
Description: X2 build failures 
Details: fix build failures on Cray X2.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16303 16303]'''
Severity: major 
Frequency: Only on FC kernels 2.6.22+ 
Description: oops in statahead 
Details: Do not drop reference count for the dentry from VFS when lookup, VFS will do that by itself.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17024 17024]'''
Severity: major 
Description: Lustre oops in {:ptlrpc:ptlrpc_server_free_request+373} 
Details: In case of memory pressure, list_del() can be called twice on req->rq_history_list, causing a kernel oops.

=Changes from v1.6.5 to v1.6.5.1=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14309 14309]'''
Severity: normal 
Description: RPM packages did not include InfinBand support 
Details: The Lustre 1.6.5 did not include InfiniBand RPM packages.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14699 14699]'''
Severity: normal 
Frequency: only with administrator action 
Description: mount failure if config log has invalid conf_param setting 
Details: If administrator specified an incorrect configuration parameter with "lctl conf_param" this would cause an error during future client mounts. Instead, ignore the bad configuration parameter.

*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
Severity: major 
Frequency: Application do stride read on lustre 
Description: The read performance will drop a lot if the application does stride read. 
Details: Because the stride_start_offset are missing in stride read-ahead, it will cause clients read a lot of unused pages in read-ahead, then the read-performance drops.

=Changes from v1.6.4.3 to v1.6.5=
'''Support for networks:''' 
''' socklnd - any kernel supported by Lustre''' 
''' qswlnd - Qsnet kernel modules 5.20 and later''' 
''' openiblnd - IbGold 1.8.2''' 
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3''' 
''' viblnd - Voltaire ibhost 3.4.5 and later''' 
''' ciblnd - Topspin 3.2.0''' 
''' iiblnd - Infiniserv 3.3 + PathBits patch''' 
''' gmlnd - GM 2.1.22 and later''' 
''' mxlnd - MX 1.2.1 or later''' 
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x''' 

'''Support for kernels:''' 
''' 2.6.5-7.311 (SLES 9)''' 
''' 2.6.9-67.0.7.EL (RHEL 4)''' 
''' 2.6.16.54-0.2.5 (SLES 10)''' 
''' 2.6.18-53.1.14.el5 (RHEL 5)''' 
''' 2.6.22.14 vanilla (kernel.org)''' 

'''Client support for unpatched kernels: (see [[Patchless_Client]])''' 
''' 2.6.16 - 2.6.22 vanilla (kernel.org)''' 

'''Due to problems with nested symlinks and FMODE_EXEC (bug [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.7-sun1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd ./' to a removed current working directory (refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=14399 14399]'''

'''A new quota file format has been introduced in 1.6.5.
The format conversion from prior releases is handled transparently, but releases older than 1.4.12/1.6.5 will not understand this new format. The automatic format conversion can be avoided by running the following command on the MDS before upgrading:
'tunefs.lustre --param="mdt.quota_type=ug1" $MDTDEV'.
'''For more information, please refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=13904 13904]'''

*Severity: critical

Frequency: very rare, if additional xattrs are used on kernels >= 2.6.12

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15777 15777]

Description: MDS may lose file striping (and hence file data) in some cases

Details: If there are additional extended attributes stored on the MDS, in particular ACLs, SELinux, or user attributes (if user_xattr is specified for the client mount options) then there is a risk of attribute loss. Additionally, the Lustre file striping needs to be larger than default (e.g. striped over all OSTs), and an additional attribute must be stored initially in the inode and then increase in size enough to be moved to the external attribute block (e.g. ACL growing in size) for file data to be lost.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12191 12191]

Description: add message levels for liblustreapi

*Severity: minor

Frequency: rare, only if {mds,oss}_num_threads is specified

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=15759 15759]

Description: MDS or OSS service threads fail startup with -24 (-EMFILE)

Details: During startup under recovery, it is possible for service thread startup to fail in ptlrpc_start_threads() if one of the threads begins processing a request and then starts an additional thread. This causes ptlrpc_start_threads() to try and start 1 too many threads and get an error.

*Severity: normal

Frequency: rare

Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: MDT cannot be unmounted, reporting "Mount still busy"

Details: Mountpoint references were being leaked during open reply reconstruction after an MDS restart. Drop mountpoint reference in reconstruct_open() and free dentry reference also.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]

Description: fix for occasional failure case of -ENOSPC in recovery-small tests

Details: Move the 'good_osts' check before the 'total_bavail' check. This will result in an -EAGAIN and in the exit call path we call alloc_rr() which will with increasing aggressiveness attempt to aquire precreated objects on the minimum number of required OSCs.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14326 14326]

Description: Use old size assignment to avoid deadlock

Details: This reverts the changes in bugs 2369 and bug 14138 that introduced
the scheduling while holding a spinlock. We do not need locking for size in ll_update_inode() because size is only updated from the MDS for directories or files without objects, so there is no other place to do the update, and concurrent access to such inodes are protected by the inode lock.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14655 14655]

Description: Use __u64 instead of int for valid bits

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14746 14746]

Description: resolve "_IOWR redefined" build error on SLES10

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14763 14763]

Description: dump the memory debugging after all modules are unloaded to suppress false negative in conf_sanity test 39

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14872 14872]

Description: the recovery timer never expires

Details: for new client connect request, the recovery timer should not be reset, otherwise recovery timer will never expired, if the old client never come. Only old client connect and first connection req should trigger recovery timer reset.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15521 15521]

Description: the min numbers of lproc stats are wrong

Details: adding a new constant LC_MIN_INIT and use it for initialization of lc_min.

*Severity: normal

Frequency: always with interactive lfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15212 15212]

Description: Reinitialize optind to 0 so that interactive lfs works in all cases

*Severity: normal

Frequency: with multiple concurrent readdir processes in same directory

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15406| 15406] [https://bugzilla.lustre.org/show_bug.cgi?id=15169 15169] [https://bugzilla.lustre.org/show_bug.cgi?id=15175 15175]

Description: misc fixes for directory readahead.

Details: prevent previous statahead async RPC callback from processing the current "statahead_info", race condition between async RPC callback add dentry into dentry hash table and "ls" thread revalidate such dentry, statahead his/miss control for hidden items, and so on.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15316 15316]

Description: build kernel-ib packages for OFED 1.3 in our release cycle

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15036 15036]

Description: incore types cleaning in quota code (with respect to 64-bit limits)

Details: several u32 variables declarations are replaced with u64 declarations

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: fix SLES kernel versioning

Details: the kernel version for our SLES 10 kernel did not include a "-" before the "smp" at the end. while this was not a problem in general, it did mean that software trying to use the kernel version to try to detect a vendor specific kernel would fail. this was most evident by the OFED build scripts.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14803 14803]

Description: Don't update lov_desc members until making sure they are valid

Details: When updating lov_desc members via proc fs, need fix their validities before doing the real update.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15069 15069]

Description: don't put request into delay list while invalidate in flight.

Details: ptlrpc_delay_request sometimes put in delay list while invalidate import in flight. this produce timeout for invalidate and sometimes can cause stale data.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15240 15240]

Description: Update kernel to RHEL4 2.6.9-67.0.7.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]

Frequency: on PPC only

Description: not convert ost objects for directory because it's not exist.

Details: ll_dir_getstripe assume directory has ost objects but this wrong.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15517 15517]

Description: Fix warnings with compile liblustre at sles10/rhel5 which have __u64 as usingied long long type.

*Severity: minor

Frequency: rare, on shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]

Description: race process AST vs remove callback

Details: removing callback before disconnect import open race with processing callback.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]

Description: Update kernel to SLES9 2.6.5-7.311.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]

Description: Files open for execute are not marked busy on SLES10

Details: Add FMODE_EXEC to SLES10 SP1 server kernel series.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13397 13397]

Description: Add server support for vanilla-2.6.22.14.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13375 13375]

Description: Avoid lov_create() getting stuck in obd_statfs_rqset()

Details: If an OST is down the MDS will hang indefinitely in obd_statfs_rqset() waiting for the statfs data. While for MDS QOS usage of statfs, it should not stuck in waiting.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3055 3055]

Description: Disable adaptive timeouts by default

*Severity: major

Frequency: on network error

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15027 15027]

Description: panic with double free request if network error

Details: mdc_finish_enqueue is finish request if any network error occuring, but it's true only for synchronus enqueue, for async enqueue (via ptlrpcd) this incorrect and ptlrpcd want finish request himself.

*Severity: normal

Frequency: rare, on recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14533 14533]

Description: read procfs can produce deadlock in some situation

Details: Holding lprocfs lock with send rpc can produce block for destroy obd objects and this also block reconnect with -EALREADY. This isn't fix all lprocfs bugs - but make it rare.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15152 15152]

Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.

*Severity: major

Frequency: frequent on X2 node

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15010 15010]

Description: mdc_set_open_replay_data LBUG

Details: Set replay data for requests that are eligible for replay.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14321 14321]

Description: lustre_mgs: operation 101 on unconnected MGS

Details: When MGC is disconnected from MGS long enough, MGS will evict the MGC, and late on MGC cannot successfully connect to MGS and a lot of the error messages complaining that MGS is not connected.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack, the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14720 14720]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.

*Serverity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793]

Description: Update RHEL4 kernel to 2.6.9-67.0.4.

*Severity: minor

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Don't allow skipping OSTs if index has been specified.

Details: Don't allow skipping OSTs if index has been specified, make locking in internal create lots better.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14421 14421]

Description: ASSERTION(!PageDirty(page)) failed

Details: Wrong check could lead to an assertion failure under specific load patterns.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12228 12228]

Description: LBUG in ptlrpc_check_set() bad phase ebc0de00

Details: access to bitfield in structure is always rounded to long and this produce problem with not atomic change any bit.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13647 13647]

Description: Lustre 'make rpms' failed.

Details: Remove ldiskfs spec file to avoids rpmbuild be confused when builds Lustre rpms from tarball.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14498 14498]

Description: Update to SLES9 SP4 kernel-2.6.5-7.308.

*Severity: normal

Frequency: rare on shutdown OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14608 14608]

Description: If llog cancel was not send before clean_exports phase, this can produce deadlock in llog code.

Details: If llog thread has last reference to obd and call class_import_put this produce deadlock because llog_cleanup_commit_master wait when last llog_commit_thread exited, but this never success because was called from llog_commit_thread.

*Severity: normal

Frequency: only if OST index is skipped

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14607 14607]

Description: NULL lov_tgts causing MDS oops

Details: more safe checks for NULL lov_tgts for avoid oops.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14531 14531]

Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14368 14368]

Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14136 14136]

Description: make mgs_setparam() handle fsname containing dash

Details: fsname containing a dash does not work with lctl conf_param

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14288 14288]

Description: Update to RHEL4 Update-6 kernel-2.6.9-67.EL.

*Severity: normal

Frequency: rare, in recovery and (or) destroy lovobjid file.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12702 12702]

Description: rewrite lov_objid code.

Details: Cleanup for lov_objid code, remove scability problems and wrong locking. Fix sending last_id into OST.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14388 14388]

Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14289 14289]

Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.

Details: Use d_move_locked instead of __d_move.

*Severity: major

Frequency: rare, at shutdown

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14260 14260]

Description: access already free / zero obd_namespace.

Details: if client_disconnect_export was called without force flag set, and exist connect request in flight, this can produce access to NULL pointer (or already free pointer) when connect_interpret store ocd flags in obd_namespace.

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14418 14418]

Description: not alloc memory with spinlock held.

Details: allocation memory with GFP_KERNEL can produce sleep deadlock, if any spinlock held.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14270 14270]

Description: lfs find does not continue on file error

Details: Continue other files processing when a file/dir is absent.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11791 11791]

Description: Inconsistent usage of lustre_pack_reply()

Details: Standardize the usage of lustre_pack_reply() such that it always generate a CERROR on failure.

*Severity: normal

Frequency: very rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3462 3462]

Description: Fix replay if there is an un-replied request and open

Details: In some cases, older replay request will revert the mcd->mcd_last_xid on MDS which is used to record the client's latest sent request.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]

Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13874 13874]

Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13889 13889]

Description: Update to SLES9 kernel-2.6.5-7.287.3.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14041 14041]

Description: Update to RHEL4 kernel-2.6.9-55.0.12.EL.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13690 13690]

Description: Build SLES10 patchless client fails

Details: The configure was broken by run ./configure with --with-linux-obj=.... argument for patchless client. When the configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude can't search header adequately. Use absolute path such as -I($LINUX)/include instead.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11622 11622]

Description: Lustre Page Accounting

Details: New macros for page alloc and free which enable accounting of page allocation of Lustre. Use percpu counters to store memory and page statistics.

*Severity: normal

Frequency: only if debugging is disabled

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13497 13497]

Description: LASSERT_{REQ,REP}SWAB macros are buggy

Details: If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop these macros and replace them with their definitions instead.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13888 13888]

Description: interrupt oig_wait produce painc on resend.

Details: brw_redo_request can be used for resend requests from ptlrpcd and private set, and this produce situation when rq_ptlrpcd_data not copyed to new allocated request and triggered LBUG on assert req->rq_ptlrpcd_data != NULL. But this member used only for wakeup ptlrpcd set if request is changed and can be safety changed to use rq_set directly.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11089 11089]

Description: organize the server-side client stats on per-nid basis

Details: Change the structure of stats under obdfilter and mds to
New structure:
+- exports
+- nid#1
| + stats
| + uuids
+- nid#2...
+- clear
The "uuid"s file would list the uuids of _active_ exports. And the clear entry is to clear all stats and stale nids.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12266 12266]

Description: Processes looping in ll_readdir() on Lustre clients finally causing a full node pseudo-hang

Details: Concurrent access to the same directory from multiple clients with intensive file creation/removal can cause a client node to spin in ll_readdir(). i_version must be increased every time the lock is cancelled to ensure a revalidate is done.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12829 12829] [https://bugzilla.lustre.org/show_bug.cgi?id=13455 13455]

Description: Changing primary group doesn't change the group lustre assigns to a file

Details: When CRAY_XT3 is defined, the fsgid supplied by the client is overridden with the primary group provided by the group upcall, whereas the supplied fsgid can be trusted if it is in the list of supplementary groups returned by the group upcall.

*Severity: enhancement
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12749 12749]

Description: Root Squash Functionality

Details: Implementation of NFS-like root squash capability. Specifically, don't allow someone with root access on a client node to be able to manipulate files owned by root on a server node.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10718 10718]

Description: Slow trucate/writes to huge files at high offsets.

Details: Directly associate cached pages to lock that protect those pages, this allows us to quickly find what pages to write and remove once lock callback is received.

*Severity: normal

Frequency: common

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14379 14379]

Description: Too many locks accumulating on client during NFS usage

Details: mds_open improperly used accmode to find out access mode to a file. Also mdc_intent_lock logic to find out if we already have lock similar to just received was flawed since introduction of skiplists - locks are now added to the front of the granted queue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14477 14477]

Description: Hit ASSERTION(obd->obd_stopping == 1) failed in some setup failed situation.

Details: In obd setup failure handler, obd_stopping will not necessarily to be 1, and obd_set_up should also be checked to make sure whether obd is completely setup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14398 14398]

Description: Allow masking D_WARNING, D_ERROR messages from console

Details: Console messages can now be disabled via lnet.printk.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14614 14614]

Description: User code with malformed file open parameter crashes client node

Details: Before packing join_file req, all the related reference should be checked carefully in case some malformed flags cause fake join_file req on client.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10600 10600]

Description: shrink/enlarge qunit size when needed; fix the problem of coarse grain of quota doing harm to quota's accuracy

Details: qunit size will be changed when quota limitation is too low/high; record the pending quota write in order to get more accureate quota; delete the patch for bug12588, which is unnecessary when this patch is landed. This bug also contains fixes for bug 14526, 14299, 14601 and 13794.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14225 14225]

Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK

Details: ldlm_completion_ast() assumes that a lock is granted when the req mode is equal to the granted mode. However, it should also check that LDLM_FL_CP_REQD is not set.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14360 14360]

Description: Heavy nfs access might result in deadlocks

Details: After ELC code landed, it is now improper to enqueue any mds locks under och_sem, because enqueue might want to decide to cancel open locks for same inode we are holding och_sem for.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14443 14443]

Description: 35% write performance drop with ldiskfs2 when quotas are on

Details: Enable ext3 journalled quota by default to improve performance when quotas are turned on.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13843 13843]

Description: Client eviction while running blogbench

Details: A lot of unlink operations with concurrent I/O can lead to a deadlock causing evictions. To address the problem, the number of oustanding OST_DESTROY requests is now throttled to max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking callbacks are processed in priority.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14845 14845]

Description: conflicts between asm-ppc64/types.h and lustre_types.h

Details: fix duplicated definitions between asm-ppc64/types.h and lustre_types.h on PPC.

*Severity: normal

Frequency: PPC/PPC64 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14844 14844]

Description: asm-ppc/segment.h does not exist

Details: fix compile issue on PPC.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: add support for several checksum algorithms. Currently, CRC32 and Adler-32 are supported. The checksum type can be changed on the fly through /proc/fs/lustre/osc/*/checksum_type.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14648 14648]

Description: use adler32 for page checksums

Details: when available, use the Adler-32 algorithm instead of CRC32 for page checksums.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14864 14864]

Description: better handle error messages in extents code

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14729 14729]

Description: SNMP support enhancement

Details: Adding total number of sampled request for an MDS node in snmp support.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14748 14748]

Description: Optimize ldlm waiting list processing for PR extent locks

Details: When processing waiting list for read extent lock and meeting read lock that is same or wider to it that is not contended, skip processing rest of the list and immediatelly return current status of conflictness, since we are guaranteed there are no conflicting locks in the rest of the list.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14774 14774]

Description: Time out and refuse to reconnect

Details: When the failover node is the primary node, it is possible to have two identical connections in imp_conn_list. We must compare not conn's pointers but NIDs, otherwise we can defeat connection throttling.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775]

Description: Client not clear own cache if answer to reconnect is lost.

Details: Client gets evicted from server. Now client also thinks it is disconnected (or gets ENOTCONN on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but reply is lost and not reported to client. Client reconnects again and gets back a just-created connection, but it is not new so client thinks it was not evicted and does not do recovery.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14483 14483]

Description: Detect stride IO mode in read-ahead

Details: When a client does stride read, read-ahead should detect that and read-ahead pages according to the detected stride pattern.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15033 15033]

Description: build for X2 fails

Details: fix compile issue on Cray systems.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13371 13371]

Description: implement readv/writev APIs(aio_read/aio_writes in newer kernels)

Details: This greatly improves speed of NFS writes on 2.6 kernels.

*Severity: normal

Frequency: only on PPC/SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14855 14855]

Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h

Details: On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to be defined. Add a hack in mkfs_lustre.c to work around this compile issue.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14257 14257]

Description: LASSERT on MDS when client holding flock lock dies

Details: ldlm pool logic depends on number of granted locks equal to number of released locks which is not true for flock locks, so just exclude such locks from consideration.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15188 15188]

Description: MDS deadlock with many ll_sync_lov threads and I/O stalled

Details: Use fsfilt_sync() for both the whole filesystem sync and individual file sync to eliminate dangerous inode locking with I_LOCK that can lead to a deadlock.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15566 15566]

Description: Update an obsolete wirecheck.c generator

Details: Update wirecheck.c/wirehdr.c and regenerate wiretest.c

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14712 14712]

Description: Client can panic on open sometimes

Details: It is possible that we try to free already freed request in ll_file_open in some error cases when we send request from ll_file_open

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14410 14410]

Description: performance in 1.6.3

Details: Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be sure that 1MB requests are not fragmented by the block layer.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15198 15198]

Description: LDLM soft lockups - improvement

Details: It is be possible to send the lock handle along with each read or write request because the client is already doing a lock match itself so there isn't any reason the OST should have to re-do that search.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14036 14036]

Description: lfs quota fails with deactivated OSTS

Details: With this patch, three improvements are included:
1. detete the softlimit in mds and osts when use "lfs quota".
2. display the inaccurate data in the output of "lfs quota".
3. try to get quota info when "lfs quota" is executed.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15776 15776]

Description: Extent locks not granted with no conflicts sometimes.

Details: When race occurs in glimpse handler and nothing is returned, we do not reprocess the queue after lock cancel, and that leads to a stall until next activity on a resource

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15712 15712]

Description: ksocknal_create_conn() hit ASSERTION during connection race

Details: ksocknal_create_conn() hit ASSERTION during connection race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13983 13983]

Description: ksocknal_send_hello() hit ASSERTION while connecting race

Details: ksocknal_send_hello() hit ASSERTION while connecting race

Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14425 14425]

Description: o2iblnd/ptllnd credit deadlock in a routed config.

Details: o2iblnd/ptllnd credit deadlock in a routed config.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14956 14956]

Description: High load after starting lnet

Details: gmlnd should sleep in rx thread in interruptible way. Otherwise, uptime utility reports high load that looks confusingly.

Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14838 14838]

Description: ksocklnd fails to establish connection if accept_port is high

Details: PID remapping must not be done for active (outgoing) connections

=Changes from v1.6.4.2 to v1.6.4.3=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-67.0.4.EL (RHEL 4), 2.6.16.54-0.2.5 (SLES 10), 2.6.18-53.1.13.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793 ]

Description: Update to the latest RHEL4 kernel (i.e. 2.6.9-67.0.4.EL) to fix the vulnerabilities described in CVE-2008-0001, CVE-2007-5500 and CVE-2007-4130.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858 ]

Description: Update to the latest SLES10 kernel (i.e. 2.6.16.54-0.2.5) to fix the security problems described in CVE-2008-0007, CVE-2008-0001, CVE-2007-5966 and CVE-2007-6417.

*Severity: critical

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876 ]

Description: Update to the latest RHEL5 kernel (i.e. 2.6.18-53.1.13.el5) to fix the vulnerability described in CVE-2008-0600. This problem could allow local user to gain root privileges.

*Severity: normal

Frequency: RHEL4 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618 ]

Description: mkfs is very slow on IA64/RHEL4

Details: A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775 ]

Description: Client not clear own cache if answer to reconnect is lost.

Details: client gets evicted from server. Now client also thinks it is disconnected (ot gets enotconn on its operation) and decides to reconnect. Server receives reconnect message, but cannot find export. New export is created that is fully valid (new cookie!), but client gets a reply that the export is new, and so no recovery should be performed.

=Changes from v1.6.4.1 to v1.6.4.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to problems with nested symlinks and FMODE_EXEC (bug 12652), we do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).'''

'''Recommended e2fsprogs version: 1.40.4-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

'''RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).'''

*Severity: critical

Frequency: only for relatively new filesystems, when OSTs are in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14631 14631 ]

Description: OST objects below id 20000 are deleted, causing data loss

Details: For relatively newly formatted OST filesystem(s), where there have not been at least 20000 objects created on an OST a bug in MDS->OST orphan recovery could cause those objects to be deleted if the OST was in recovery, but the MDS was not. Safety checks in the orphan recovery prevent this if more than 20000 objects were ever created on an OST. If the MDS was also in recovery the problem was not hit. Only in 1.6.4.1.

*Severity: major

Frequency: rare, depends on device drivers and load

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]

Description: MDS or OSS nodes crash due to stack overflow

Details: Code changes in 1.6.4 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage.

=Changes from v1.6.4 to v1.6.4.1=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14433 14433]

Description: Oops on connection from 1.6.3 client

Frequency: always, on connection from 1.6.3 client

Details: Enable and accept the OBD_CONNECT_LRU_RESIZE flag only if LRU resizing is enabled at configure time. This fixes an oops caused by incorrectly accepting the LRU_RESIZE feature even if --enable-lru-resize is not specified.

=Changes from v1.6.3 to v1.6.4=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.9.EL (RHEL 4), 2.6.16.53-0.8 (SLES 10), 2.6.18-8.1.14.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11686 11686]

Description: Console message flood

Details: Make cdls ratelimiting more tunable by adding several tunable in procfs /proc/sys/lnet/console_{min,max}_delay_centisecs and /proc/sys/lnet/console_backoff.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13521 13521]

Description: Update kernel patches for SLES10 2.6.16.53-0.8.

Details: Update which_patch & target file for SLES10 latest kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]

Description: add --type and --size parameters to lfs find

Details: Enhance lfs find by adding filetype and filesize parameters. Also multiple OBDs can now be specified for the --obd option.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11270 11270]

Description: eliminate client locks in face of contention

Details: file contention detection and lockless i/o implementation for contended files.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12411 12411]

Description: Remove client patches from SLES 10 kernel.

Details: This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2369 2369 ]

Description: use i_size_read and i_size_write in 2.6 port

Details: replace inode->i_size access with i_size_read/write()

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13454 13454]

Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13518 13518]

Description: Kernel patches update for RHEL4 2.6.9-55.0.6.

Details: Modify vm-tunables-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13452 13452]

Description: Kernel config for 2.6.18-vanilla.

Details: Modify targets/2.6-vanilla.target.in. Add config file kernel-2.6.18-2.6-vanilla-i686.config. Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13207 13207]

Description: adapt the lustre_config script to support the upgrade case

Details: Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel.

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13751 13751]

Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.

Details: Modify target file & which_patch. A flaw was found in the IA32 system call emulation provided on AMD64 and Intel 64 platforms. An improperly validated 64-bit value could be stored in the %RAX register, which could trigger an out-of-bounds system call table access. An untrusted local user could exploit this flaw to run code in the kernel (ie a root privilege escalation). (CVE-2007-4573).

*Severity: critical

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13748 13748]

Description: Update RHEL 4 kernel to fix local root privilege escalation.

Details: Update to the latest RHEL 4 kernel to fix the vulnerability described in CVE-2007-4573. This problem could allow untrusted local users to gain root access.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14353 14353]

Description: excessive CPU consumption on client reduces IO performance

Details: in some cases the ldlm_poold thread is spending too much time trying to cancel locks, and is cancelling them too aggressively and this can severely impact IO performance. Disable the dynamic LRU resize code at build time. It can be re-enabled with configure --enable-lru-resize at build time.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13917 13917]

Description: MDS hang or stay in waiting lock

Details: If client receive lock with CBPENDING flag ldlm need send lock cancel as separate rpc, to avoid situation when cancel request can't processed due all i/o threads stay in wait lock.

*Severity: major

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11710 11710]

Description: improve handling recoverable errors
Details: If request processed with error which can be recoverable on server request should be resend, otherwise page released from cache and marked as error.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12302 12302]

Description: new userspace socklnd

Details: Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced with new one - usocklnd.

*Severity: normal

Frequency: occasional

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13730 13730]

Description: Do not fail import if osc_interpret_create gets -EAGAIN

Details: If osc_interpret_create got -EAGAIN it immediately exits and wakeup oscc_waitq. After wakeup oscc_wait_for_objects call oscc_has_objects and see OSC has no objests and call oscc_internal_create to resend create request.

*Severity: normal

Frequency: when removing large files

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13181 13181]

Description: scheduling issue during removal of large Lustre files

Details: Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels. It causes scheduling issues when removing large files (17TB in the present case).

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13358 13358]

Description: 1.4.11 Can't handle directories with stripe set and extended ACLs

Details: Impossible (EPROTO is returned) to access a directory that has a non-default striping and ACLs.

*Severity: normal

Frequency: only on ppc

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12234 12234]

Description: /proc/fs/lustre/devices broken on ppc

Details: The patch as applied to 1.6.2 doesn't look correct for all arches. We should make sure the type of 'index' is loff_t and then cast explicitly as needed below. Do not assign an explicitly cast loff_t to an int.

*Severity: normal

Frequency: only for rhel5

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13616 13616]

Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.

Details: Modify the target file & which_kernel.

*Severity: normal

Frequency: if the uninit_groups feature is enabled on ldiskfs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13706 13706]

Description: e2fsck reports "invalid unused inodes count"

Details: If a new ldiskfs filesystem is created with the "uninit_groups" feature and only a single inode is created in a group then the "bg_unused_inodes" count is incorrectly updated. Creating a second inode in that group would update it correctly.

*Severity: normal

Frequency: only if filesystem is inconsistent

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11673 11673]

Description: handle "serious error: objid * already exists" more gracefully

Details: If LAST_ID value on disk is smaller than the objects existing in the O/0/d* directories, it indicates disk corruption and causes an LBUG(). If the object is 0-length, then we should use the existing object. This will help to avoid a full fsck in most cases.

*Severity: normal

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13570 13570]

Description: To avoid grant space > avaible space when the disk is almost full. Without this patch you might see the error "grant XXXX > available" or some LBUG about grant, when the disk is almost full.

Details: In filter_check_grant, for non_grant cache write, we should check the left space by if (*left > ungranted + bytes), instead of (*left > ungranted), because only we are sure the left space is enough for another "bytes", then the ungrant space should be increase. In client, we should update cl_avail_grant only there is OBD_MD_FLGRANT in the reply.

*Severity: normal

Frequency: when using O_DIRECT and quotas

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13930 13930]

Description: Incorrect file ownership on O_DIRECT output files

Details: block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]

Description: touch file failed when fs is not full

Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]

Description: data checksumming impacts single node performance

Details: disable checksums by default since it impacts single node performance. It is still possible to enable checksums by default via "configure --enable-checksum", or at runtime via procfs.

*Severity: minor

Frequency: when lov objid is destroyed

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14222 14222]

Description: mds can't recreate lov objid file.

Details: if lov objid file is destroyed and ost with highest index connected first mds not get last objid number from ost. Also if mds get last id from ost his not tell osc about this and it's produce warning about wrong del orphan request.

*Severity: minor

Frequency: rarely

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12948 12948]

Description: buffer overruns could theoretically occur

Details: llapi_semantic_traverse() modifies the "path" argument by appending values to the end of the origin string, and a buffer overrun may occur. Adding buffer overrun check in liblustreapi.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13732 13732]

Description: change order of libsysio includes

Details: '#include sysio.h' should always come before '#include xtio.h'

=Changes from v1.6.2 to v1.6.3=

'''Support for networks: socklnd - any kernel supported by Lustre, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.40.2-cfs1'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12192 12192]

Description: llapi_file_create() does not allow some changes

Details: add llapi_file_open() that allows specifying the file creation mode and open flags, and also returns an open file handle.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12743 12743]

Description: df doesn't work properly if diskfs blocksize != 4K

Details: Choose biggest blocksize of OST's as the LOV's blocksize.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: merge and cleanup kernel patches.

Details: Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Kernel config file for RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12446 12446]

Description: OSS needs mutliple precreate threads

Details: Add ability to start more than one create thread per OSS.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]

Description: RedHat Update kernel for RHEL5

Details: Modify the kernel config file more closer RHEL5.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Define PAGE_SIZE when it isn't present.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11401 11401]

Description: client-side metadata stat-ahead during readdir(directory readahead)

Details: perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11230 11230]

Description: Tune the kernel for good SCSI performance.

Details: Set the value of /sys/block/{dev}/queue/max_sectors_kb to the value of /sys/block/{dev}/queue/max_hw_sectors_kb in mount_lustre.

*Severity: critical

Frequency: Always for filesystems larger than 2TB on 32-bit systems.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13547 13547] , [https://bugzilla.lustre.org/show_bug.cgi?id=13627 13627]

Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers.

Details: When generating the bio request for lustre file writes the sector number would overflow a temporary variable before being used for the IO. The data reads correctly from Lustre (which will overflow in a similar manner) but other file data or filesystem metadata may be corrupted in some cases.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13236 13236]

Description: TOE Kernel panic by ksocklnd

Details: offloaded sockets provide their own implementation of sendpage, can't call tcp_sendpage() directly

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13482 13482]

Description: build error

Details: fix typos in gmlnd, ptllnd and viblnd

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12932 12932]

Description: obd_health_check_timeout too short

Details: set obd_health_check_timeout as 1.5x of obd_timeout

*Severity: major

Frequency: only with quota on the root user

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12223 12223]

Description: mds_obd_create error creating tmp object

Details: When the user sets quota on root, llog will be affected and can't create files and write files.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12782 12782]

Description: /proc/sys/lnet has non-sysctl entries

Details: Updating dump_kernel/daemon_file/debug_mb to use sysctl variables

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10778 10778]

Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs

Details: races between lnd_shutdown and peer creation prevent lnd_shutdown from finishing.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13279 13279]

Description: open files rlimit 1024 reached while liblustre testing

Details: ulnds/socklnd must close open socket after unsuccessful 'say hello' attempt.

*Severity: normal

Frequency: always on directories with default striping set

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12836 12836]

Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()

Details: Avoid lov_verify_lmm_common() on directory with -1 stripe count.

*Severity: normal

Frequency: Always on ia64 patchless client, and possibly others.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12826 12826]

Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.

Details: This allows the patchless client to be loaded on architectures without this export.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13142 13142]

Description: disorder of journal start and llog_add cause deadlock.

Details: in llog_origin_connect, journal start should happen before llog_add keep the same order as other functions to avoid the deadlock.

*Severity: normal

Frequency: occasionally when using NFS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13030 13030]

Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs

Details: with NFS, the anon dentry's parent was set to itself in d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the corresponding dentry other than use rec->ur_name.

*Severity: normal

Frequency: Occasionally with failover

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12459 12459]

Description: Client eviction due to failover config

Details: after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections.

*Severity: normal

Frequency: only with liblustre clients on XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12418 12418]

Description: evictions taking too long

Details: allow llrd to evict clients directly on OSTs

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13125 13125]

Description: osts not allocated evenly to files

Details: change the condition to increase offset_idx

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13436 13436]

Description: Only those disconnect error should be returned by rq_status.

Details: In open/enqueue processs, Some errors, which will cause client disconnected, should be returned by rq_status, while other errors should still be returned by intent, then mdc or llite will detect them.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13600 13600]

Description: "lfs find -obd UUID" prints directories

Details: "lfs find -obd UUID" will return all directory names instead of just file names. It is incorrect because the directories do not reside on the OSTs.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13596 13596]

Description: MDS hang after unclean shutdown of lots of clients

Details: Never resend AST requests.

*Severity: normal

Frequency: Always, for kernels after 2.6.16

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13304 13304]

Description: Fix warning idr_remove called for id=.. which is not allocated.
Details: Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12186 12186]

Description: Fix errors in lfs documentation

Details: Fixes man pages

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly.

Details: void sending multiple quota reqs to mds, which will keep the status between the reqs.

*Severity: cleanup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13532 13532]

Description: rewrite ext2-derived code in llite/dir.c and obdclass/uuid.c

Details: rewrite inherited code (uuid parsing code from ext2 utils and readdir code from ext3) from scratch preserving functionality.

=Changes from v1.6.1 to v1.6.2=

'''Support for kernels: 2.6.5-7.286 (SLES 9), 2.6.9-55.0.2.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18-8.1.8.el5 (RHEL 5), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?
title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12786 12786]

Description: lfs setstripe enhancement

Details: Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12211 12211]

Description: randomly memory allocation failure util

Details: Make lustre randomly failed allocating memory for testing purpose.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10786 10786]

Description: omit set fsid for export NFS

Details: fix set/restore device id for avoid EMFILE error and mark lustre fs as FS_REQUIRES_DEV for avoid problems with generate fsid.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10595 10595]

Description: Error message improvement.

Details: Merging of two LCONSOLE_ERROR_MSG into one.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12602 12606]

Description: don't use GFP_* in generic Lustre code.

Details: Use cfs_alloc_* functions and CFS_* flags for code portability.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12333 12333]

Description: obdclass is limited by single OBD_ALLOC(idarray)

Details: replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415 ]

Description: updated patchess for new RHEL4 kernel

Details: Fixed ext3-unlink-race.patch per Kalpak's comment.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13006 13006 ]

Description: warnings with build patchless client with vanila 2.6.19 and up

Details: change old ctl_table style and replace ctl_table/ctl_table_header with cfs_sysctl_table_t/cfs_sysctl_table_header_t

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13093 13093]

Description: O_DIRECT bypasses client statistics.

Details: When running with O_DIRECT I/O, neither the client rpc_stats nor read_ahead_stats were updated. Copied stats section from osc_send_oap_rpc() into async_internal().

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13249 13249]

Description: Kernel patches for SLES9 2.6.5-7.286 kernel

Details: Update target/ChangeLog/which_patch .

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12955 12955]

Description: jbd statistics

Details: Port older jbd statistics patch for sles10

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]

Description: Build failure against Centos5 (RHEL5)

Details: Use getpagesize() instead of PAGE_SIZE.

*Severity: major

Frequency: after network failures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12769 12769]

Description: Add sync option to mount_lustre.c

Details: Client loses data written to lustre after a network interruption.

*Severity: normal

Frequency: mds/oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog ctxt is refrenced after it has been freed.

Details: llog ctxt refcount was added to avoide the race between ctxt free and llog recovery process. Each llog user must hold ctxt refcount before it access the llog. And the llog ctxt can only be freed when its refcount is zero.

*Severity: normal

Frequency: only for SLES10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update kernel patch for SLES10 SP1

Details: Add patch blkdev_tunables-2.6-sles10.patch to 2.6-sles10.series.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11802 11802]

Description: lustre support for RHEL5

Details: Add support for RHEL5.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11756 11756]

Description: umount blocks forever on error

Details: In result of wrong using obd_no_recov and obd_force flags client can hand if cancel or some other requests is lost.

*Severity: normal

Frequency: Only for SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13177 13177]

Description: sanity_quota fail test_1

Details: There are multiple occurences of $TSTUSR in SLES's /etc/group file, which makes TSTID[2] inunique.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9977 9977]

Description: lvbo_init failed for resource with missing objects.

Details: Fix returning error if we do stat for file with missing/corrupted objects and i_size set to all sum of size of all avaible objects. if we to truncate/write to missing object - it is recreated.

*Severity: normal

Frequency: When flocks are used.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13103 13103]

Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.

Details: Flock locks might destroy just granted lock if it could be merged with another existing flock, this is done in completion handler, so teach ldlm_cli_enquque_fini that this is a valid case for flock locks.

*Severity: normal

Frequency: Rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11974 11974]

Description: reply_lock_interpret crash due to race with it and lock cancel.

Details: Do not replay locks that are being cancelled. Do not reference locks by their address during replay, just by their handle.

*Severity: normal

Frequency: only with deactivated OSTs

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11679 11679]

Description: lstripe command fails for valid OST index

Details: The stripe offset is compared to 'lov->desc.ld_tgt_count' instead of lov->desc.ld_active_tgt_count.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13147 13147]

Description: block reactivating mgc import until all deactivates complete

Details: Fix race when failing back MDT/MGS to itself (testing)

*Severity: minor

Frequency: only for Cray XT3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: peer credits not enough on many OST per OSS systems.

Details: Use new lnet way to add credits as we need those for pings and ASTs

*Severity: minor

Frequency: only with liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12790 12790]

Description: Liblustre is not releasing flock locks on file close.

Details: Release flock locks on file close.

*Severity: minor

Frequency: only for RHEL4

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12839 12839]

Description: Update kernel patches for kernel-2.6.9-55.0.2.EL

Details: Remove inode-nr_unused-2.6.9-rhel4.patch from 2.6-rhel4.series Update target file and kernel config.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11327 11327 ]

Description: ASSERTION(export != NULL) failed in target_handle_connect

Details: Assetion hit is result of rare race between disconnect and connet to same nid. target_handle_connect found old connect cockie and tried to reconnect, but can't find export for this cockie.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13276 13276]

Description: Oops in read and write path when failing to allocate lock.

Details: Check if lock allocation failed and return error back.

=Changes from v1.6.0.1 to v1.6.1=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 and 1.2 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

'''Support for kernels: 2.6.5-7.283 (SLES 9), 2.6.9-55.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18.8 vanilla (kernel.org)'''

'''Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)'''

'''Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.'''

'''Recommended e2fsprogs version: 1.39.cfs8'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.
Starting with this release, the ldiskfs backing filesystem required by Lustre is now in its own package, lustre-ldiskfs. This package should be installed. It is versioned separately from Lustre and may be released separately in future.'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12194 12194]

Description: add optional extra BUILD_VERSION info

Details: add a new environment variable (namely LUSTRE_VERS) which allows to override the lustre version.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11548 11548]

Description: Add LNET router traceability for debug purposes

Details: If a checksum failure occurs with a router as part of the IO path, the NID of the last router that forwarded the bulk data is printed so it can be identified.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10997 10997]

Description: lfs setstripe use optional parameters instead of postional parameters.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10651 10651]

Description: Nanosecond timestamp support for ldiskfs

Details: The on-disk ldiskfs filesystem has added support for nanosecond resolution timestamps. There is not yet support for this at the Lustre filesystem level.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10768 10768]

Description: 64-bit inode version

Details: : Add a on-disk 64-bit inode version for ext3 to track changes made to the inode. This will be required for version-based recovery.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11563 11563]

Description: Add -o localflock option to simulate old noflock behaviour.

Details: This will achieve local-only flock/fcntl locks coherentness.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11647 11647]

Description: update patchless client

Details: Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10589 10589]

Description: metadata RPC reduction (e.g. for rm performance)

Details: decrease the amount of synchronous RPC between clients and servers by canceling conflicing lock before the operation on the client and packing thier handles into the main operation RPC to server.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12605 12605]

Description: add #ifdef HAVE_KERNEL_CONFIG_H

Details: kernels from 2.6.19 not need include linux/config.h, but add include linux/autoconf.h in commpiler command line.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12764 12764]

Description: patchless client support for 2.6.22 kernel

Details: 2.6.22 has only one visble change, SLAB_CTOR_* constants is removed. In this case we need drop using os depended interface to kmem_cache and use cfs_mem_cache API.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats tool.

Details: Tool which collects stats by tracking value written in pid, ppid, gid and uses llstat to generate output to plot graph using plot-llstat Updated lustre/utils/Makefile.am Added lustre/utils/ltrack_stats.c

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11039 11039]

Description: 2.6.18 server support (lustre 1.6.1)

Details: Support for 2.6.18 kernels on the server side.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12678 12678]

Description: remove fs_prep_san_write operation and related patches

Details: remove the ext3-san-jdike patches which are no longer useful.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11721 11721]

Description: Add printing inode info into message about error in writepage.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11971 11971]

Description: Accessing a block bevice can re-enable I/O when Lustre is tearing down a device.

Details: dev_clear_rdonly(bdev) must be called in kill_bdev() instead of blkdev_put().

*Severity: major

Frequency: only with mballoc3 code and deep extent trees

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12861 12861]

Description: ldiskfs_ext_search_right: bad header in inode: unexpected eh_depth

Details: a wrong check of extent headers in ldiskfs_ext_search_right() can cause the filesystem to be remounted read-only.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13129 13129]

Description: server LBUG when shutting down

Details: Block umount forever until the mount refcount is zero rather than giving up after an arbitrary timeout.

*Severity: normal

Frequency: 2.6.18 servers only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12546 12546 ]

Description: ll_kern_mount() doesn't release the module reference

Details: The ldiskfs module reference count never drops down to 0 because ll_kern_mount() doesn't release the module reference.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12470 12470]

Description: server LBUG when using old ost_num_threads parameter

Details: Accept the old ost_num_threads parameter but warn that it is deprecated, and fix an off-by-one error that caused an LBUG.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11722 11722]

Description: Transient SCSI error results in persistent IO issue

Details: iobuf->dr_error is not reinitialized to 0 between two uses.

*Severity: normal

Frequency: sometimes when underlying device returns I/O errors

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11743 11743]

Description: OSTs not going read-only during write failures

Details: OSTs are not remounted read-only when the journal commit threads get I/O errors because fsfilt_ext3 calls journal_start/stop() instead of the ext3 wrappers.

*Severity: normal

Frequency: SLES10 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12538 12538]

Description: sanity-quota.sh quotacheck failed: rc = -22

Details: Quotas cannot be enabled on SLES10.

*Severity: normal

Frequency: liblustre clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12229 12229]

Description: getdirentries does not give error when run on compute nodes

Details: getdirentries does not fail when the size specified as an argument is too small to contain at least one entry

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11315 11315]

Description: OST "spontaneously" evicts client; client has imp_pingable == 0

Details: Due to a race condition, liblustre clients were occasionally evicted incorrectly.

*Severity: normal

Frequency: during server recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11203 11203]

Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING

Details: request with rq_no_resend flag not awake l_wait_event if they get a timeout.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11818 11818]

Description: MDS fails to start if a duplicate client export is detected

Details: in some rare cases it was possible for a client to connect to an MDS multiple times. Upon recovery the MDS would detect this and fail during startup. Handle this more gracefully.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12477 12477]

Description: Wrong request locking in request set processing

Details: ptlrpc_check_set wrongly uses req->rq_lock for proctect add to imp_delayed_list, in this place should be used imp_lock.

*Severity: normal

Frequency: when reconnecting

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC reconnect to OST

Details: When osc reconnect ost, OST(filter) should check whether it should grant more space to client by comparing fed_grant and cl_avail_grant, and return the granted space to client instead of "new granted" space, because client will call osc_init_grant to update the client grant space info.

*Severity: normal

Frequency: when client reconnects to OST

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant leak when OSC does a resend and replays bulk write

Details: When osc reconnect to OST, OST(filter) should clear grant info of bulk write request, because the grant info while be sync between OSC and OST when reconnect, and we should ignore the grant info these of resend/replay write req.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11662 11662]

Description: Grant space more than avaiable space sometimes.

Details: When then OST is about to be full, if two bulk writing from different clients came to OST. Accord the avaliable space of the OST, the first req should be permitted, and the second one should be denied by ENOSPC. But if the seconde arrived before the first one is commited. The OST might wrongly permit second writing, which will cause grant space > avaiable space.

*Severity: normal

Frequency: when client is evicted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12371 12371]

Description: Grant might be wrongly erased when osc is evicted by OST

Details: when the import is evicted by server, it will fork another thread ptlrpc_invalidate_import_thread to invalidate the import, where the grant will be set to 0. While the original thread will update the grant it got when connecting. So if the former happened latter, the grant will be wrongly errased because of this race.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12401 12401]

Description: Checking Stale with correct fid

Details: ll_revalidate_it should uses de_inode instead of op_data.fid2 to check whether it is stale, because sometimes, we want the enqueue happened anyway, and op_data.fid2 will not be initialized.

*Severity: normal

Frequency: only with 2.4 kernel

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12134 12134]

Description: random memory corruption

Details: size of struct ll_inode_info is to big for union inode.u and this can be cause of random memory corruption.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10818 10818]

Description: Memory leak in recovery

Details: Lov_mds_md was not free in an error handler in mds_create_object. It should also check obd_fail before fsfilt_start, otherwise if fsfilt_start return -EROFS,(failover mds during mds recovery). then the req will return with repmsg->transno = 0 and rc = EROFS. and we met hit the assert LASSERT(req->rq_reqmsg->transno == req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should be freed no matter whether fsfilt_commit success or not.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11935 11935]

Description: Not check open intent error before release open handle

Details: in some rare cases, the open intent error is not checked before release open handle, which may cause ASSERTION(open_req->rq_transno != 0), because it tries to release the failed open handle.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12556 12556]

Description: Set cat log bitmap only after create log success.

Details: in some rare cases, the cat log bitmap is set too early. and it should be set only after create log success.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12086 12086]

Description: the cat log was not initialized in recovery

Details: When mds(mgs) do recovery, the tgt_count might be zero, so the unlink log on mds will not be initialized until mds post recovery. And also in mds post recovery, the unlink log will initialization will be done asynchronausly, so there will be race between add unlink log and unlink log initialization.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12579 12597]

Description: brw_stats were being printed incorrectly

Details: brw_stats were being printed as log2 but all of them were not recorded as log2. Also remove some code duplication arising from filter_tally_{read,write}.

*Severity: normal

Frequency: rare, only in recovery.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11674 11674]

Description: ASSERTION(req->rq_type != LI_POISON) failed

Details: imp_lock should be held while iterating over imp_sending_list for prevent destroy request after get timeout in ptlrpc_queue_wait.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12689 12689]

Description: replay-single.sh test 52 fails

Details: A lock's skiplist need to be cleanup when it being unlinked from its resource list.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: Short directio read returns full requested size rather than
actual amount read.

Details: Direct I/O operations should return actual amount of bytes transferred rather than requested size.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12646 12646]

Description: sanity.sh test_77h fails with "test_77h file compare failed"

Details: test_77h uses a file which was messed by other test case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12576 12576]

Description: Not Check whether lov_tgts is NULL in some lov functions

Details: Checking whether lov_tgts is NULL in some functions.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11815 11815]

Description: replace obdo_alloc() with OBDO_ALLOC macro

Details: nothing special is done in obdo_alloc() function, and for debugging purpose, it needs to be replaced with macros.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12784 12784]

Description: bad return value and errno from fcntl call

Details: In liblustre API, errno should be a negative value if error happens.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11544 11544]

Description: ptlrpc_check_set() LBUG

Details: In case of positive reply from server and failed client bulk callback after bulk transfer shouldn't LBUG, but process this request as erroneous.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12696 12696]

Description: ASSERTION(imp->imp_conn_current) failed

Details: an assertion failure is hit if a client node boots and attempts to mount a lustre filesystem faster than RECONNECT_INTERVAL seconds.

*Severity: normal

Frequency: only for i686

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12695 12695]

Description: 1.4.11 RC1 build fails for RHEL 4, i686

Details: Fixed config variable for build.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: Updated patchess for new RHEL4 kernel

Details: Updated patch inode-nr_unused-2.6.9-rhel4.patch Updated patch jbd-stats-2.6.9.patch Updated patch qsnet-rhel4-2.6.patch Updated patch quota-deadlock-on-pagelock-core.patch Updated patch vfs_intent-2.6-rhel4.patch Updated patch vfs_races-2.6-rhel4.patch Updated series file 2.6-rhel4-titech.series Updated series file 2.6-rhel4.series Updated kernel config files

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12374 12374]

Description: lquota slave complains LBUG when reconnecting with mds or
failover in mds.

Details: quota slave depends qctxt->lqc_import to send its quota request. This pointer will be invalid if mds did failover or broke its connect to osts, which leads to LBUG.

*Severity: normal

Frequency: when qunit size is too small(less than 20M)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]

Description: write is stopped by improper -EDQUOT

Details: If the master is busy and qunit size is small enough(let's say 1M), the slave can not get quota from master on time, which will lead slave to trigger a -EQUOTA to client.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12629 12629]

Description: Deadlock during metadata tests

Details: in prune_dir_dentries(), shrink_dcache_parent() should not be called with the per-dentry lock held.

*Severity: normal

Frequency: SLES9 only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12744 12744]

Description: Lustre patched kernel for SLES9 SP3 has NR_CPUS set to 8

Details: set CONFIG_NR_CPUS to 128 instead of 8.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11324 11324]

Description: LDISKFS-fs error (device sdc): ldiskfs_free_blocks

Details: a disk corruption can cause the mballoc code to assert on a double free or other extent corruptions. Handle these with ext3_error() instead of assertions.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13063 13063]

Description: lfsck built against 1.4.x cannot run against 1.6.0 lustre

Details: the definition for OBD_IOC_GETNAME changed in 1.6.0. One of the few external users of this ioctl number is lfsck's call to llapi_lov_get_uuids() and this caused lfsck to fail at startup. Add the old ioctl number to the handler so both old and new lfsck can work.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11301 11301]

Description: parallel lock callbacks

Details: Instead of sending blocking and completion callbacks as separated requests, adding them to a set and sending in parallel.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12417 12417]

Description: Disable most debugging by default

Details: To improve performance, disable most logging (for debug purposes) by default. VFSTRACE, RPCTRACE, and DLMTRACE are now off by default, and HA includes fewer messages.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11013 11013]

Description: hash tables for lists of nids, connections and uuids

Details: Hash tables noticeably help when a lot of clients connect to a server, to faster identify duplicate connections or reconnects, also to faster find export to evict in manual eviction case.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11190 11190]

Description: Sometimes, when the server evict a client, and the client will not be evicted as soon as possible.

Details: In enqueue req, the error was returned by intent, instead of rq_status which make ptlrpc layer not detect this error, and does not evict the client. So enqueue error should be returned by rq_status.

*Severity: normal

Frequency: only for SLES9

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-suse-2.6.patch.

*Severity: normal

Frequency: only for sles10

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12771 12771]

Description: Update patches for SLES 10 SP1 kernel.

Details: Update the patch vfs_intent-2.6-sles10.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12543 12543]

Description: Routinely utilize latest Quadrics drivers in CFS releases

Details: Update patch qsnet-rhel4-2.6.patch.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12975 12975]

Description: Using wrong pointer in osc_brw_prep_request

Details: Access to array[-1] can produce panic if kernel compiled with CONFIG_PAGE_ALLOC enabled

*Severity: normal

Frequency: only in recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13148 13148]

Description: Mark OST as early accessible if his start SYNC.

Details: osc_precreate return flag early accessible if oscc marked as OSCC_FLAG_SYNC_IN_PROGRESS.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]

Description: Sometimes precreate code can triger create object on wrong ost

Details: Wrong protected or not not restored variables aftre precreate loop can produce creation object on wrong ost.

*Severity: normal

Frequency: oss recovery

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10800 10800]

Description: llog_commit_thread cleanup should sync with llog_commit_thread
start

Details: llog_commit_thread_count should be synced between llog_commit start and cleanup, so new llog_commit thread should not be started when llog_commit threads being stopped to avoid accessing some freed stuff.

*Severity: minor

Frequency: only with 10000 clients or more

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12364 12364]

Description: poor connect scaling with increasing client count

Details: Don't run filter_grant_sanity_check for more than 100 exports to improve scaling for large numbers of clients.

*Severity: minor

Frequency: nfs export on patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11970 11970]

Description: connectathon hang when test nfs export over patchless client

Details: Disconnected dentry cannot be found with lookup, so we do not need to unhash it or make it invalid

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11546 11546]

Description: open req refcounting wrong on reconnect

Details: If reconnect happened between getting open reply from server and call to mdc_set_replay_data in ll_file_open, we will schedule replay for unreferenced request that we are about to free. Subsequent close will crash in variety of ways. Check that request is still eligible for replay in mdc_set_replay_data().

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11512 11512]

Description: disable writes to filesystem when reading health_check file

Details: the default for reading the health_check proc file has changed to NOT do a journal transaction and write to disk, because this can cause reads of the /proc file to hang and block HA state checking on a healthy but otherwise heavily loaded system. It is possible to return to the previous behaviour during configure with --enable-health-write.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11658 11658 ]

Description: log_commit_thread vs filter_destroy race leads to crash

Details: Take import reference before releasing llog record semaphore

*Severity: minor

Frequency: only with huge numbers of clients

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11817 11817]

Description: Prevents from taking the superblock lock in llap_from_page for a soon died page.

Details: using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW for llap_from_page call in ll_removepage() prevents from taking the superblock lock for a soon died page.

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11706 11706]

Description: service threads may hog cpus when there are a lot of requests

Details: Insert cond_resched to give other threads a chance to use some CPU

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12747 12747]

Description: fix mal-formatted messages

Details: fix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages

*Severity: minor

Frequency: always in liblustre

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11737 11737]

Description: wrong IS_ERR implementation in liblustre.h

Details: fix IS_ERR implementation in liblustre.h for right detect errors.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10419 10419]

Description: Correct condition for output debug message.

Details: inode i_nlink equal zero is not enough for output message about disk corruption, i_ctime and i_mode should be also checked.

*Severity: minor

Frequency: always in patchless client

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12415 12415]

Description: add configure check for truncate_complete_page

Details: improve checks for exported symbols. This allow run check without
sources, but with Module.symvers shipped with kernel distribution. add check for truncate_complete_page used by patchless client.

*Severity: minor

Frequency: only run on patchless client.

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12858 12858]

Description: use do_facet on sanity.sh for test handling recoverables errors

Details: use do_facet instead of direct use sysctl for set fail_loc on OST

*Severity: minor

Frequency: only at startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11778 11778]

Description: Delay client connections to MDT until fist MDT->OST connect

Details: If a client tried to create a new file before the MDT had connected to any OSTs, the create would return EIO. Now the client will simply block until the MDT connects to the first OST and the create can succeed.

*Severity: minor

Frequency: at statup only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12860 12860]

Description: mds_lov_synchronize race leads to various problems

Details: simultaneous MDT->OST connections at startup can cause the sync to abort, leaving the OSC in a bad state.

=Changes from v1.6.0 to v1.6.0.1=

*Severity: normal

Frequency: on some architectures

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12404 12404]

Description: 1.6 client sometimes fails to mount from a 1.4 MDT

Details: Uninitialized flags sometimes cause configuration commands to be skipped.

*Severity: normal

Frequency: patchless clients only

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12391 12391]

Description: missing __iget() symbol export

Details: The __iget() symbol export is missing. To avoid the need for this on patchless clients the deathrow inode reaper is turned off, and we depend on the VM to clean up old inodes. This dependency was during via the fix for bug 12181.

*Severity: normal

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12848 12848]

Description: sanity.sh fail: test_52b

Details: The ll_inode_to_ext_flags() has a glitch which makes MDS return incorrect inode's flags to client.

=Changes from v1.4.10 to v1.6.0=

'''CONFIGURATION CHANGE. This version of Lustre WILL NOT INTEROPERATE with older versions automatically. In many cases a special upgrade step is needed. Please read the user documentation before upgrading any part of a 1.4.x system.'''

'''WARNING: Lustre configuration and startup changes are required with this release. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.'''

'''Support for kernels: 2.4.21-47.0.1.EL (RHEL 3), 2.6.5-7.283 (SLES 9), 2.6.9-42.0.10.EL (RHEL 4), 2.6.12.6 vanilla (kernel.org), 2.6.16.27-0.9 (SLES10)'''

'''Client support for unpatched kernels: (see https://mail.clusterfs.com/wikis/lustre/PatchlessClient) 2.6.16 - 2.6.19 vanilla (kernel.org), 2.6.9-42.0.8EL (RHEL 4)'''

'''Recommended e2fsprogs version: 1.39.cfs6'''

'''Note that reiserfs quotas are disabled on SLES 10 in this kernel'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4900 4900]

Description: Async OSC create to avoid the blocking unnecessarily.

Details: If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=8007 8007]

Description: MountConf

Details: Lustre configuration is now managed via mkfs and mount commands instead of lmc and lconf. New obd types (MGS, MGC) are added for dynamic configuration management. See https://mail.clusterfs.com/wikis/lustre/MountConf for details.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4482 4482]

Description: dynamic OST addition

Details: OSTs can now be added to a live filesystem

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9851 9851]

Description: startup order invariance

Details: MDTs and OSTs can be started in any order. Clients only require the MDT to complete startup.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4899 4899]

Description: parallel, asynchronous orphan cleanup

Details: orphan cleanup is now performed in separate threads for each OST, allowing parallel non-blocking operation.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9862 9862]

Description: optimized stripe assignment

Details: stripe assignments are now made based on ost space available, ost previous usage, and OSS previous usage, in order to try to optimize storage space and networking resources.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=4226 4226]

Description: Permanently set tunables

Details: All writable /proc/fs/lustre tunables can now be permanently set on a per-server basis, at mkfs time or on a live system.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10547 10547]

Description: Lustre message v2

Details: Add lustre message format v2.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9866 9866]

Description: client OST exclusion list

Details: Clients can be started with a list of OSTs that should be declared "inactive" for known non-responsive OSTs.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10088 10088]

Description: fine-grained SMP locking inside DLM

Details: Improve DLM performance on SMP systems by removing the single per-namespace lock and replace it with per-resource locks.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9332 9332]

Description: don't hold multiple extent locks at one time

Details: To avoid client eviction during large writes, locks are not held on multiple stripes at one time or for very large writes. Otherwise, clients can block waiting for a lock on a failed OST while holding locks on other OSTs and be evicted.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9293 9293]

Description: Multiple MD RPCs in flight.

Details: Further unserialise some read-only MDT RPCs - learn about intents. To avoid overly-overloading MDT, introduce a limit on number of MDT RPCs in flight for a single client and add /proc controls to adjust this limit.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22484 22484]

Description: client read/write statistics

Details: Add client read/write call usage stats for performance analysis of user processes. /proc/fs/lustre/llite/*/offset_stats shows non-sequential file access. extents_stats shows chunk size distribution. extents_stats_per_process show chunk size distribution per user process.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22485 22485]

Description: per-client statistics on server

Details: Add ldlm and operations statistics for each client in /proc/fs/lustre/mds|obdfilter/*/exports/

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=22486 22486]

Description: improved MDT statistics

Details: Add detailed MDT operations statistics in /proc/fs/lustre/mds/*/stats

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10968 10968]

Description: VFS operations stats

Details: Add client VFS call stats, trackable by pid, ppid, or gid /proc/fs/lustre/llite/*/stats_track_[pid|ppid|gid]

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2258 2258]

Description: Dynamic service threads

Details: Within a small range, start extra service threads automatically when the request queue builds up.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11229 11229]

Description: Easy OST removal

Details: OSTs can be permanently deactivated with e.g. 'lctl conf_param lustre-OST0001.osc.active=0'

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11335 11335]

Description: MGS proc entries

Details: Added basic proc entries for the MGS showing what filesystems are served.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10998 10998]

Description: provide MGS failover

Details: Added config lock reacquisition after MGS server failover.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11461 11461]

Description: add Linux 2.4 support

Details: Added support for RHEL 2.4.21 kernel for 1.6 servers and clients

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10902 10902]

Description: plain/inodebits lock performance improvement

Details: Grouping plain/inodebits in granted list by their request modes and bits policy, thus improving the performance of search through the granted list.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11667 11667]

Description: Add "/proc/sys/lustre/debug_peer_on_timeout"

Details: liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT boolean to control whether to print peer debug info when a client's RPC times out.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11264 11264]

Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck

Details: The uninit_groups feature works in conjunction with the kernel filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed up the pass1 processing of e2fsck. This is a read-only feature in ldiskfs2 only, so older kernels and current ldiskfs cannot mount filesystems that have had this feature enabled.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10816 10816]

Description: Improve multi-block allocation algorithm to avoid fragmentation

Details: The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve allocation locality and avoid filesystem fragmentation.

*Severity: major

Frequency: mixed-endian client/server environments

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11214 11214]

Description: mixed-endian crashes

Details: The new msg_v2 system had some failures in mixed-endian environments.

*Severity: major

Frequency: when an incorrect nid is specified during startup

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10734 10734]

Description: ptlrpc connect to non-existant node causes kernel crash

Details: LNET can't be re-entered from an event callback, which happened when we expire a message after the export has been cleaned up. Instead, hand the zombie cleanup off to another thread.

*Severity: major

Frequency: only if OST filesystem is corrupted

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=9829 9829]

Description: client incorrectly hits assertion in ptlrpc_replay_req()

Details: for a short time RPCs with bulk IO are in the replay list, but replay of bulk IOs is unimplemented. If the OST filesystem is corrupted due to disk cache incoherency and then replay is started it is possible to trip an assertion. Avoid putting committed RPCs into the replay list at all to avoid this issue.

*Severity: major

Frequency: liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: System hang on startup

Details: This bug allowed the liblustre (e.g. catamount) client to return to the app before handling all startup RPCs. This could leave the node unresponsive to lustre network traffic and manifested as a server ptllnd timeout.

*Severity: major

Frequency: only for devices with external journals

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10719 10719]

Description: Set external device read-only also

Details: During a commanded failover stop, we set the disk device read-only while the server shuts down. We now also set any external journal device read-only at the same time.

*Severity: major

Frequency: when setting specific ost indicies

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11149 11149]

Description: QOS code breaks on skipped indicies

Details: Add checks for missing OST indicies in the QOS code, so OSTs created with --index need not be sequential.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12123 12123]

Description: ENOENT returned for valid filehandle during dbench.

Details: Check if a directory has children when invalidating dentries associated with an inode during lock cancellation. This fixes an incorrect ENOENT sometimes seen for valid filehandles during testing with dbench.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11330 11330]

Description: a large application tries to do I/O to the same resource and dies in the middle of it.

Details: Check the req->rq_arrival time after the call to ost_brw_lock_get(), but before we do anything about processing it & sending the BULK transfer request. This should help move old stale pending locks off the queue as quickly as obd_timeout.

*Severity: minor

Frequency: SFS test only (otherwise harmless)

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6062 6062]

Description: SPEC SFS validation failure on NFS v2 over lustre.

Details: Changes the blocksize for regular files to be 2x RPC size, and not depend on stripe size.

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=6380 6380]

Description: Fix client-side osc byte counters

Details: The osc read/write byte counters in /proc/fs/lustre/osc/*/stats are now working

*Severity: minor

Frequency: always as root on SLES

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10667 10667]

Description: Failure of copying files with lustre special EAs.

Details: Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov").

*Severity: minor

Frequency: always

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10345 10345]

Description: Refcount LNET uuids

Details: The global LNET uuid list grew linearly with every startup; refcount repeated list entries instead of always adding to the list.

*Severity: minor

Frequency: only for kernels with patches from Lustre below 1.4.3

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]

Description: Remove old rdonly API

Details: Remove old rdonly API which unused from at least lustre 1.4.3

*Severity: minor

Frequency: when upgrading from 1.4 while trying to change parameters

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11692 11692]

Description: The wrong (new) MDC name was used when setting parameters for upgraded MDT's. Also allows changing of OSC (and MDC) parameters if --writeconf is specified at tunefs upgrade time.

=Changes from v1.6.0 to v1.4.11=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1 viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12014 12014]

Description: ASSERTION failures when upgrading to the patchless zero-copy socklnd

Details: This bug affects "rolling upgrades", causing an inconsistent protocol version negotiation and subsequent assertion failure during rolling upgrades after the first wave of upgrades.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10916 10916]

Description: added LNET self test

Details: landing b_self_test

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12316 12316]

Description: Add OFED1.2 support to o2iblnd

Details: o2iblnd depends on OFED's modules, if out-tree OFED's modules are installed (other than kernel's in-tree infiniband), there could be some problem while insmod o2iblnd (mismatch CRC of ib_* symbols). If extra Module.symvers is supported in kernel (i.e, 2.6.17), this link provides solution: https://bugs.openfabrics.org/show_bug.cgi?id=355 if extra Module.symvers is not supported in kernel, we will have to run the script in bug 12316 to update $LINUX/module.symvers before building o2iblnd. More details about this are in bug 12316.

*Severity: normal

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11680 11680]

Description: make panic on lbug configurable

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13288 13288]

Description: Initialize cpumask before use

*Severity: minor

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11223 11223]

Details: Change "dropped message" CERRORs to D_NETERROR so they are logged instead of creating "console chatter" when a lustre timeout races with normal RPC completion.

*Severity: minor

Details: lnet_clear_peer_table can wait forever if user forgets to clear a lazy portal.

*Severity: minor

Details: libcfs_id2str should check pid against LNET_PID_ANY.

*Severity: minor

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12227 12227]

Description: cfs_duration_{u,n}sec() wrongly calculate nanosecond part of struct timeval.

Details: do_div() macro is used incorrectly.

=Changes from v1.4.9 to v1.6.0=

'''Support for networks: socklnd - kernels up to 2.6.16, qswlnd - Qsnet kernel modules 5.20 and later, openiblnd - IbGold 1.8.2, o2iblnd - OFED 1.1, viblnd - Voltaire ibhost 3.4.5 and later, ciblnd - Topspin 3.2.0, iiblnd - Infiniserv 3.3 + PathBits patch, gmlnd - GM 2.1.22 and later, mxlnd - MX 1.2.1 or later, ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10316 10316]

Description: Fixed console chatter in case of -ETIMEDOUT.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11684 11684]

Description: Added D_NETTRACE for recording network packet history (initially only for ptllnd). Also a separate userspace ptllnd facility to gather history which should really be covered by D_NETTRACE too, if only CDEBUG recorded history in userspace.

*Severity: enhancement

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11094 11094]

Description: Multiple instances for o2iblnd

Details: Allow multiple instances of o2iblnd to enable networking over multiple HCAs and routing between them.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12458 12458]

Description: Assertion failure in kernel ptllnd caused by posting passive bulk buffers before connection establishment complete.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12455 12455]

Description: A race in kernel ptllnd between deleting a peer and posting new communications for it could hang communications - manifesting as "Unexpectedly long timeout" messages.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12432 12432]

Description: Kernel ptllnd lock ordering issue could hang a node.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12016 12016]

Description: node crash on socket teardown race

*Severity: major

Frequency: after Ptllnd timeouts and portals congestion

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11659 11659]

Description: Credit overflows

Details: This was a bug in ptllnd connection establishment. The fix implements better peer stamps to disambiguate connection establishment and ensure both peers enter the credit flow state machine consistently.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11394 11394]

Description: kptllnd didn't propagate some network errors up to LNET

Details: This bug was spotted while investigating 11394. The fix ensures network errors on sends and bulk transfers are propagated to LNET/lustre correctly.

*Severity: major

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11616 11616]

Description: o2iblnd handle early RDMA_CM_EVENT_DISCONNECTED.

Details: If the fabric is lossy, an RDMA_CM_EVENT_DISCONNECTED callback can occur before a connection has actually been established. This caused an assertion failure previously.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11201 11201]

Description: lnet deadlock in router_checker

Details: turned ksnd_connd_lock, ksnd_reaper_lock, and ksock_net_t:ksnd_lock into BH locks to eliminate potential deadlock caused by ksocknal_data_ready() preempting code holding these locks.

*Severity: major

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11126 11126]

Description: Millions of failed socklnd connection attempts cause a very slow FS

Details: added a new route flag ksnr_scheduled to distinguish from ksnr_connecting, so that a peer connection request is only turned down for race concerns when an active connection to the same peer is under progress (instead of just being scheduled).

*Severity: normal

Frequency: rare

Description: gmlnd ignored some transmit errors when finalizing lnet messages.

*Severity: normal

Frequency: rare

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11472 11472]

Description: Changed the default kqswlnd ntxmsg=512

*Severity: minor

Frequency: rare

Description: Ptllnd didn't init kptllnd_data.kptl_idle_txs before it could be possibly accessed in kptllnd_shutdown. Ptllnd should init kptllnd_data.kptl_ptlid2str_lock before calling kptllnd_ptlid2str.

*Severity: minor

Frequency: rare

Description: ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.

*Severity: minor

Frequency: rare

Description: the_lnet.ln_finalizing was not set when the current thread is about to complete messages. It only affects multi-threaded user space LNet.

*Severity: minor

Frequency: 'lctl peer_list' issued on a mx net

Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12237 12237]

Description: Enable lctl's peer_list for MXLND

=[http://wiki.lustre.org/index.php?title=Change_Log_1.4 Change logs for 1.4.x releases]=