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Difference between revisions of "Change Log 1.6"

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<small>''(Updated: Jun 2009)''</small>
 
 
 
=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) ==
+
=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
  
==Client support for unpatched kernels: (se http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)==
+
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)
  
==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).==
+
Client support for unpatched kernels: (see [[Patchless Client]])
 +
* 2.6.16 - 2.6.22 vanilla (kernel.org)
  
==Recommended e2fsprogs version: 1.40.4-cfs1==
+
Client support for unpatched kernels:
 +
* We do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).
  
==Note that reiserfs quotas are disabled on SLES 10 in this kernel.==
+
Recommended e2fsprogs version: 1.40.11-sun1
  
==RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).==
+
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].
  
Severity: critical
+
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].
  
Frequency: only for relatively new filesystems, when OSTs are in recovery
 
  
Bugzilla: 14631
+
Output of ''lfs'' quota has been made less detailed by default, old (verbose) output can be obtained by using ''-v'' option.
  
Description: OST objects below id 20000 are deleted, causing data loss
+
File join has been disabled in this release. Refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929].
  
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.  
+
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 file system 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<br>
 +
Description: Update kernel to RHEL5.2 2.6.18-92.1.26.
  
Severity: major
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19453 19453]'''
 +
Severity: critical, only with RHEL4/SLES9 MDS<br>
 +
Description: user xattr corruption<br>
 +
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.
  
Frequency: rare, depends on device drivers and load
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16504 16504]'''
 +
Severity: enhancement<br>
 +
Description: Update kernel to RHEL4.7 2.6.9-78.0.22.
  
Bugzilla: 14529
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18289 18289]'''
 +
Severity: enhancement<br>
 +
Description: allow the use of the kernel provided OFED stack<br>
 +
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.
  
Description: MDS or OSS nodes crash due to stack overflow
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18775 18775]'''
 +
Severity: enhancement<br>
 +
Description: improve lctl set/get_param<br>
 +
Details: handle the bad options, support more than one arguments, add '-F' option to append the indicator to the parameters.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=19212 19212]'''
 +
Severity: enhancement<br>
 +
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<br>
 +
Frequency: rare<br>
 +
Description: fix lqs' reference which won't be put in some situations.<br>
 +
Details: This patch fixes:
 +
* 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.
 +
* 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 v1.6.4 to v1.6.4.1=
+
=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 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:
 +
* 2.6.5-7.314 (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)
  
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 [[Patchless Client]])
 +
* 2.6.16 - 2.6.22 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)
+
Client support for unpatched kernels:
 +
*We do not recommend using patchless RHEL4 clients with kernels prior to 2.6.9-55EL (RHEL4U5).
  
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.  
+
Recommended e2fsprogs version: 1.40.11-sun1
  
Recommended e2fsprogs version: 1.40.2-cfs1
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
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].
  
Severity: major
+
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: 14433
+
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].
  
Description: Oops on connection from 1.6.3 client
+
Output of ''lfs'' quota has been made less detailed by default, old (verbose) output can be obtained by using ''-v'' option.
  
Frequency: always, on connection from 1.6.3 client
+
File join has been disabled in this release, refer to bugzilla [https://bugzilla.lustre.org/show_bug.cgi?id=16929 16929].
  
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.  
+
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].
  
=Changes from v1.6.3 to v1.6.4=
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18810 18810]'''
 +
Severity: major<br>
 +
Frequency  : rare<br>
 +
Description: fix racy locking of mballoc block bitmaps causing BUG<br>
 +
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.
  
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
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18480 18480]'''
 +
Frequency: common<br>
 +
Description: correct count of recoverable clients<br>
 +
Details: if recovery failed for client for some reasons (goal inode or something else) server can wait failed clients for finish recovery.
  
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)
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18695 18695]'''
 +
Severity: critical<br>
 +
Frequency: when directories had atime set in past (e.g. untar)<br>
 +
Descriptoin: Lustre detected file system corruption with inode out of bounds<br>
 +
Details: don't update i_size on MDS_CLOSE for directories. This causes directory corruptions on the MDT.
  
Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18895 18895]'''
 +
Severity: normal<br>
 +
Frequency: on failed service startup<br>
 +
Description: replay-single test_61d: LustreError: 17392:0:(lprocfs_status.c:859:lprocfs_obd_cleanup()) ASSERTION(obd->obd_proc_exports_entry->subdir == NULL) failed<br>
 +
Details: cleanup lprocfs entries on error.
  
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18903 18903]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: llmount.sh: BUG: spinlock wrong owner on CPU#0, mount.lustre/8180<br>
 +
Details: fix typo in import_set_conn() causing spinlock corruption.
  
Recommended e2fsprogs version: 1.40.2-cfs1
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18859 18859]'''
 +
Severity: normal<br>
 +
Frequency: rare, only when using group lock on client<br>
 +
Description: Group Lock in Lustre: write call is blocking<br>
 +
Details: fix wrong return code of ll_is_file_contended() causing processes to be blocked indefinitely.
  
Note that reiserfs quotas are disabled on SLES 10 in this kernel.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17757 17757]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: ASSERTION(new_lock != NULL) failed:op 0x1 lockh 0x0<br>
 +
Details: DISP_OPEN_LOCK is not cleared properly in reconstruct_open() since intent_disposition() is used instead of intent_set_disposition().
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15428 15428]'''
 +
Severity: major<br>
 +
Frequency: occasional when using software RAID5<br>
 +
Description: raid5 panics<br>
 +
Details: fix panic in raid5_end_read_request().
  
Bugzilla: 11686
+
=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
  
Description: Console message flood
+
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)
  
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.  
+
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).
  
Severity: enhancement
+
Recommended e2fsprogs version: 1.40.11-sun1
  
Bugzilla: 13521
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Description: Update kernel patches for SLES10 2.6.16.53-0.8.  
+
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].
  
Details: Update which_patch & target file for SLES10 latest kernel.  
+
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].
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16498 16498]'''
 +
Severity: normal<br>
 +
Description: Get RAID stripe size from superblock<br>
 +
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: 13128
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16438 16438]'''
 +
Severity: major<br>
 +
Description: Disable big-endian ldiskfs server support.<br>
 +
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 file systems that might have been created in this way it is possible to mount with the "bigendian_extents" option to force the mount.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15983 15983]'''
 +
Severity: major<br>
 +
Description: workaround for OOM from o2iblnd<br>
 +
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<br>
 +
Description: Support Zerocopy receive of Chelsio device<br>
 +
Details: Chelsio driver can support zerocopy for iov[1] if it's contiguous and large enough.
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13490 13490]'''
 +
Severity: normal<br>
 +
Description: fix credit flow deadlock in uptllnd
  
Bugzilla: 11270
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16308 16308]'''
 +
Severity: normal<br>
 +
Description: finalize network operation in reasonable time<br>
 +
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.
  
Description: eliminate client locks in face of contention
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16338 16338]'''
 +
Severity: major<br>
 +
Description: Continuous recovery on 33 of 413 nodes after lustre oss failure<br>
 +
Details: Lost reference on conn prevents peer from being destroyed, which could prevent new peer creation if peer count has reached upper limit.
  
Details: file contention detection and lockless i/o implementation for contended files.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16102 16102]'''
 +
Severity: normal<br>
 +
Description: LNET Selftest results in Soft lockup on OSS CPU<br>
 +
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<br>
 +
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
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18238 18238]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: panic in mds_open<br>
 +
Details: don't confuse mds_finish_transno() with PTR_ERR(-ENOENT)
  
Bugzilla: 12411
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17972 17972]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: stuck in cache_remove_extent() or panic with accessing to already freed look.<br>
 +
Details: release lock refernce only after add page to pages list.
  
Description: Remove client patches from SLES 10 kernel.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17636 17636]'''
 +
Severity: normal<br>
 +
Frequency: always with long access acl<br>
 +
Descriptoin: mds can't pack reply with long acl.<br>
 +
Details: mds don't control size of acl but they limited by reint/getattr reply buffer.
  
Details: This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18049 18049]'''
 +
Severity: normal<br>
 +
Frequency: start MDS on uncleanly shutdowned MDS device<br>
 +
Description: aborting recovery hang on MDS<br>
 +
Details: don't throttle destroy RPCs for the MDT.
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=18018 18018]'''
 +
Severity: major<br>
 +
Frequency: on remount<br>
 +
Description: external journal device not working after the remount<br>
 +
Details: clear dev_rdonly flag for external journal devices in blkdev_put()
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17802 17802]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: shutdown vs evict race<br>
 +
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: 2369
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16693 16693]'''
 +
Severity: minor<br>
 +
Frequency: always<br>
 +
Description: shrink LOV EAs before replying<br>
 +
Details: correctly adjust LOV EA buffer for reply.
  
Description: use i_size_read and i_size_write in 2.6 port
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16081 16081]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: don't skip ost target if they assigned to file<br>
 +
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.
  
Details: replace inode->i_size access with i_size_read/write()
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17201 17201]'''
 +
Severity: enhancement<br>
 +
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<br>
 +
Frequency: rare, need ACLs on inode.<br>
 +
Description: client can't handle ost additional correctly<br>
 +
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.
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17374 17374]'''
 +
Severity: enhancement<br>
 +
Description: Update to sles9 kernel-2.6.5-7.314.
  
Bugzilla: 13454
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17458 17458]'''
 +
Severity: enhancement<br>
 +
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
  
Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16578 16578]'''
 +
Severity: normal<br>
 +
Frequency: Create a symlink file with a very long name<br>
 +
Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)<br>
 +
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<br>
 +
Frequency: rare, during racing unlink and create in same directory<br>
 +
Description: mds is deadlocked<br>
 +
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.
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=1819 1819]'''
 +
Severity: enhancement<br>
 +
Description: Add /proc entry for import status<br>
 +
Details: The mdc, osc, and mgc import directories now have an import directory that contains useful import data for debugging connection problems.
  
Bugzilla: 13518
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15966 15966]'''
 +
Severity: enhancement<br>
 +
Description: Re-disable certain /proc logging<br>
 +
Details: Enable and disable client's offset_stats, extents_stats and extents_stats_per_process stats logging on the fly.
  
Description: Kernel patches update for RHEL4 2.6.9-55.0.6.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16643 16643]'''
 +
Severity: enhancement<br>
 +
Description: Generic /proc file permissions<br>
 +
Details: Set /Proc file permissions in a more generic way to enable non-root users operate on some /proc files.
  
Details: Modify vm-tunables-rhel4.patch.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16561 16561]'''
 +
Severity: major<br>
 +
Description: Hitting mdc_commit_close() ASSERTION<br>
 +
Details: Properly handle request reference release in ll_release_openhandle().
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
 +
Severity: normal<br>
 +
Description: Prevent import from entering FULL state when server in recovery
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16750 16750]'''
 +
Severity: normal<br>
 +
Frequency: only with devices that have a ':' in the name<br>
 +
Description: service mount cannot take device name with ':'<br>
 +
Details: Only when device name contains ":/" will mount treat it as client mount.
  
Bugzilla: 13452
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback
  
Description: Kernel config for 2.6.18-vanilla.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
 +
Severity: normal<br>
 +
Frequency: on recovery<br>
 +
Description: I/O failures after umount during fail back<br>
 +
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.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
 +
Severity: enhancement<br>
 +
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<br>
 +
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
  
Severity: enhancement
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16566 16566]'''
 +
Severity: enhancement<br>
 +
Description: Upcall on Lustre log has been dumped<br>
 +
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: 13207
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16583 16583]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: avoid messages about idr_remove called for unallocated id.<br>
 +
Details: Move s_dev assigment for clustered NFS to end of initialization, to avoid problem with error handling.
  
Description: adapt the lustre_config script to support the upgrade case
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16109 16109]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages<br>
 +
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.
  
Details: Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16573 16573]'''
 +
Severity: enhancement<br>
 +
Description: Export bytes_read/bytes_write count on OSC/OST.
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16237 16237]'''
 +
Severity: normal<br>
 +
Description: Early reply size mismatch, MGC loses connection<br>
 +
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<br>
 +
Description: quota recovery deadlock during mds failover<br>
 +
Details: This patch includes att18982, att18236, att18237 in bz14840.<br>
 +
Problems solved:<br>
 +
* Fix osts hang when mds does failover with quotaon<br>
 +
* Prevent watchdog storm when osts threads wait for the recovery of mds<br>
  
Severity: critical
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14095 14095]'''
 +
Severity: enhancement<br>
 +
Description: Add lustre_start utility to start or stop multiple Lustre servers from a CSV file.
  
Frequency: always
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17026 17026]'''
 +
Severity: normal<br>
 +
Description: kptllnd_peer_check_sends() ASSERTION(!in_interrupt()) failed<br>
 +
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: 13751
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12800 12800]'''
 +
Severity: enhancement<br>
 +
Description: More exported tunables for mballoc<br>
 +
Details: Add support for tunable preallocation window and new tunables for large/small requests
  
Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16680 16680]'''
 +
Severity: normal<br>
 +
Description: Detect corruption of block bitmap and checking for preallocations<br>
 +
Details: Checks validity of on-disk block bitmap. Also it does better checking of number of applied preallocations. When corruption is found, it turns file system read-only to prevent further corruptions.
  
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).  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17197 17197]'''
 +
Severity: normal<br>
 +
Description: ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed<br>
 +
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<br>
 +
Frequency: only for big-endian servers<br>
 +
Description: Check if system is big-endian while mounting fs with extents<br>
 +
Details: Mounting a file system 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.
  
Severity: critical
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16860 16860]'''
 +
Severity: normal<br>
 +
Description: Excessive recovery window<br>
 +
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.
  
Frequency: always
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16522 16522]'''
 +
Severity: normal<br>
 +
Description: Watchdog triggered on MDS failover<br>
 +
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: 13748
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16839 16839]'''
 +
Severity: normal<br>
 +
Frequency: start MDS on uncleanly shutdowned MDS device<br>
 +
Description: ll_sync thread stay in waiting mds<>ost recovery finished<br>
 +
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.
  
Description: Update RHEL 4 kernel to fix local root privilege escalation.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17895 17895]'''
 +
Severity: major<br>
 +
Frequency: rare, only if using MMP with Linux RAID<br>
 +
Description: MMP doesn't work with Linux RAID<br>
 +
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.
  
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.  
+
=Changes from v1.6.5.1 to v1.6.6=
 +
'''Support for networks:'''<br>
 +
''' socklnd - any kernel supported by Lustre'''<br>
 +
''' qswlnd - Qsnet kernel modules 5.20 and later'''<br>
 +
''' openiblnd - IbGold 1.8.2'''<br>
 +
''' o2iblnd - OFED 1.1, 1.2.0, 1.2.5, and 1.3.1'''<br>
 +
''' viblnd - Voltaire ibhost 3.4.5 and later'''<br>
 +
''' ciblnd - Topspin 3.2.0'''<br>
 +
''' iiblnd - Infiniserv 3.3 + PathBits patch'''<br>
 +
''' gmlnd - GM 2.1.22 and later'''<br>
 +
''' mxlnd - MX 1.2.1 or later'''<br>
 +
''' ptllnd - Portals 3.3 / UNICOS/lc 1.5.x, 2.0.x'''<br>
  
 +
'''Support for kernels:'''<br>
 +
''' 2.6.5-7.312 (SLES 9)'''<br>
 +
''' 2.6.9-67.0.22.EL (RHEL 4)'''<br>
 +
''' 2.6.16.60-0.27 (SLES 10)'''<br>
 +
''' 2.6.18-92.1.10.el5 (RHEL 5)'''<br>
 +
''' 2.6.22.14 vanilla (kernel.org)'''<br>
  
Severity: major
+
'''Client support for unpatched kernels: (see [[Patchless Client]])'''<br>
 +
''' 2.6.16 - 2.6.22 vanilla (kernel.org)'''<br>
  
Frequency: occasional
+
'''Recommended e2fsprogs version: 1.40.11-sun1'''
  
Bugzilla: 14353
+
'''Note that reiserfs quotas are disabled on SLES 10 in this kernel.'''
  
Description: excessive CPU consumption on client reduces IO performance
+
'''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]'''
  
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.  
+
'''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<br>
 +
Description: ptl_send_rpc hits LASSERT when ptl_send_buf fails<br>
 +
Details: only hits under out-of-memory situations
  
Severity: major
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
 +
Severity: enhancement<br>
 +
Description: Add support for downgrading pools-striped files<br>
 +
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).
  
Frequency: occasional
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15975 15975]'''
 +
Severity: normal<br>
 +
Frequency: occasionally, only on patchless client<br>
 +
Description: add workaround for race between add/remove dentry from hash
  
Bugzilla: 13917
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16717 16717]'''
 +
Severity: minor<br>
 +
Frequency: only during testing<br>
 +
Description: LBUG when llog conf file is full<br>
 +
Details: When llog bitmap is full, ENOSPC should be returned for plain log.
  
Description: MDS hang or stay in waiting lock
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16907 16907]'''
 +
Severity: normal<br>
 +
Frequency: occasionally, during recovery<br>
 +
Description: Prevent import from entering FULL state when server in recovery<br>
  
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.
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15927 15927]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback<br>
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16611 16611]'''
 +
Severity: normal<br>
 +
Frequency: on recovery<br>
 +
Description: I/O failures after umount during fail back<br>
 +
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.
  
Severity: major
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16633 16633]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.<br>
  
Frequency: occasional
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16547 16547]'''
 +
Severity: enhancement<br>
 +
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.<br>
  
Bugzilla: 11710
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: avoid ASSERTION(client_stat->nid_exp_ref_count == 0) failed<br>
 +
Details: release reference to stats when client disconnected, not when export destroyed for avoid races when client destroyed after main ost export.
  
Description: improve handling recoverable errors
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16679 16679]'''
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<br>
 +
Frequency: when adding OSTs to a running filesystem<br>
 +
Description: more cleanup in mds_lov<br>
 +
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<br>
 +
Frequency: only when connecting 1.6.5 clients to 1.6.4 or earlier servers<br>
 +
Description: Early reply size mismatch, MGC loses connection<br>
 +
Details: Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16006 16006]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: statfs sometimes returns stale values on the client<br>
 +
Details: restore missing copy oi_flags to lov requests.
  
Bugzilla: 12302
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16188 16188]'''
 +
Severity: enhancement<br>
 +
Description: Update to SLES9 kernel-2.6.5-7.312.<br>
  
Description: new userspace socklnd
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16503 16503]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL4 kernel-2.6.9-67.0.22.EL.<br>
  
Details: Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced with new one - usocklnd.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16317 16317]'''
 +
Severity: minor<br>
 +
Frequency: when clients reconnect to server<br>
 +
Description: per-export statistics in /proc are broken<br>
 +
Details: recreate /proc entries for clients when they reconnect.
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16080 16080]'''
 +
Severity: normal<br>
 +
Frequency: when adding OSTs to a mounted filesystem<br>
 +
Description: don't fail open with -ERANGE<br>
 +
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.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16101 16101]'''
 +
Severity: normal<br>
 +
Frequency: only for filesystems larger than 8TB<br>
 +
Description: ldiskfs BUG ldiskfs_mb_use_best_found()<br>
 +
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.
  
Frequency: occasional
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15576 15576]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: Resolve device initialization race<br>
 +
Details: Prevent proc handler from accessing devices added to the obd_devs array but yet be intialized.
  
Bugzilla: 13730
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15308 15308]'''
 +
Severity: enhancement<br>
 +
Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.<br>
  
Description: Do not fail import if osc_interpret_create gets -EAGAIN
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16190 16190]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.<br>
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16318 16318]'''
 +
Severity: normal<br>
 +
Frequency: rare, on PPC clients<br>
 +
Description: don't swab ost objects in response about directory, because this not exist.<br>
 +
Details: bug similar bug 14856, but in different function.
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15754 15754]'''
 +
Severity: enhancement<br>
 +
Description: lfs quota tool enhancements<br>
 +
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.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16037 16037]'''
 +
Severity: normal<br>
 +
Frequency: only on 32-bit clients with more than 1GB of RAM<br>
 +
Description: Client runs out of low memory<br>
 +
Details: Consider only lowmem when counting initial number of llap pages
  
Frequency: when removing large files
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15625 15625]'''
 +
Severity: enhancement<br>
 +
Description: optional service tags registration<br>
 +
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: 13181
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15825 15825]'''
 +
Severity: normal<br>
 +
Frequency: only if client is mounted with "-o flock"<br>
 +
Description: Kernel BUG tries to release flock<br>
 +
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.
  
Description: scheduling issue during removal of large Lustre files
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16189 16189]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL4 kernel-2.6.9-67.0.20.<br>
  
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).  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]'''
 +
Severity: normal<br>
 +
Frequency: rare, only during unmount<br>
 +
Description: add refcount for osc callbacks, so avoid panic on shutdown<br>
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16014 16014]'''
 +
Severity: normal<br>
 +
Frequency: only if OSTs have been removed or non-sequential OST index used<br>
 +
Description: Kernel panic with find ost index.<br>
 +
Details: lov_obd have panic if some OST's have sparse indexes.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15865 15865]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.<br>
  
Frequency: always
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15924 15924]'''
 +
Severity: major<br>
 +
Frequency: only if client is mounted with "-o flock"<br>
 +
Description: do not process already freed flock<br>
 +
Details: flock can possibly be freed by another thread before it reaches to ldlm_flock_completion_ast.
  
Bugzilla: 13358
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14480 14480]'''
 +
Severity: normal<br>
 +
Frequency: only if client is mounted with "-o flock"<br>
 +
Description: LBUG during stress test<br>
 +
Details: Need properly lock accesses the flock deadlock detection list.
  
Description: 1.4.11 Can't handle directories with stripe set and extended ACLs
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15837 15837]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: oops in page fault handler<br>
 +
Details: kernel page fault handler can return two special 'pages' in error case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
  
Details: Impossible (EPROTO is returned) to access a directory that has a non-default striping and ACLs.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15716 15716]'''
 +
Severity: minor<br>
 +
Frequency: rare, during recovery<br>
 +
Description: timeout with invalidate import.<br>
 +
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<br>
 +
Frequency: rare<br>
 +
Description: ASSERTION(CheckWriteback(page,cmd)) failed<br>
 +
Details: badly clear PG_Writeback bit in ll_ap_completion can produce false positive assertion.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15779 15779]'''
 +
Severity: normal<br>
 +
Frequency: only with broken builds/installations<br>
 +
Description: no LBUG if lquota.ko and fsfilt_ldiskfs.ko are different versions<br>
 +
Details: just return an error to a user, put a console error message
  
Frequency: only on ppc
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15741 15741]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.<br>
  
Bugzilla: 12234
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15742 15742]'''
 +
Severity: enhancement<br>
 +
Description: Update to RHEL4 kernel-2.6.9-67.0.15.<br>
  
Description: /proc/fs/lustre/devices broken on ppc
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14134 14134]'''
 +
Severity: enhancement<br>
 +
Description: enable MGS and MDT services start separately<br>
 +
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.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]'''
 +
Severity: normal<br>
 +
Frequency: always, on big-endian systems<br>
 +
Description: cleanup in ptlrpc code, related to PPC platform<br>
 +
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<br>
 +
Frequency: rare, replay get lost on server<br>
 +
Description: server incorrectly drop resent replays lead to recovery failure.<br>
 +
Details: do not drop replay according to msg flags, instead we check the per-export recovery request queue for duplication of transno.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14835 14835]'''
 +
Severity: normal<br>
 +
Frequency: after recovery<br>
 +
Description: precreate to many object's after del orphan.<br>
 +
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.
  
Frequency: only for rhel5
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15139 15139]'''
 +
Severity: normal<br>
 +
Frequency: rare, on clear nid stats<br>
 +
Description: ASSERTION(client_stat->nid_exp_ref_count == 0)<br>
 +
Details: when clean nid stats sometimes try destroy live entry, and this produce panic in free.
  
Bugzilla: 13616
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15575 15575]'''
 +
Severity: major<br>
 +
Frequency: occasionally since 1.6.4<br>
 +
Description: Stack overflow during MDS log replay<br>
 +
Details: ease stack pressure by using a thread dealing llog_process.
  
Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]'''
 +
Severity: minor<br>
 +
Frequency: very rare<br>
 +
Description: MDT cannot be unmounted, reporting "Mount still busy"<br>
 +
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.
  
Details: Modify the target file & which_kernel.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15443 15443]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: wait until IO finished before start new when do lock cancel.<br>
 +
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<br>
 +
Frequency: rare<br>
 +
Description: mds_mfd_close() ASSERTION(rc == 0)<br>
 +
Details: In mds_mfd_close(), we need protect inode's writecount change within its orphan write semaphore to prevent possible races.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14645 14645]'''
 +
Severity: minor<br>
 +
Frequency: rare, on shutdown ost<br>
 +
Description: don't hit live lock with umount ost.<br>
 +
Details: shrink_dcache_parent can be in long loop with destroy dentries, use shrink_dcache_sb instead.
  
Frequency: if the uninit_groups feature is enabled on ldiskfs
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14949 14949]'''
 +
Severity: minor<br>
 +
Frequency: only when echo_client is used<br>
 +
Description: don't panic with use echo_client<br>
 +
Details: echo client pass NULL as client nid pointer and this produce NULL pointer dereference.
  
Bugzilla: 13706
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15278 15278]'''
 +
Severity: normal<br>
 +
Frequency: Always on 32-bit PowerPC systems<br>
 +
Description: fix build on PPC32<br>
 +
Details: compile code with -m64 flag produce wrong object file for PPC32.
  
Description: e2fsck reports "invalid unused inodes count"
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15574 15574]'''
 +
Severity: normal<br>
 +
Frequency: rare<br>
 +
Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))<br>
 +
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.
  
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.
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15346 15346]'''
 +
Severity: enhancement<br>
 +
Description: skiplist implementation simplification<br>
 +
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<br>
 +
Frequency: only with administrator action<br>
 +
Description: mount failure if config log has invalid conf_param setting<br>
 +
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.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15932 15932]'''
 +
Severity: normal<br>
 +
Frequency: blocks per group < blocksize*8 and uninit_groups is enabled<br>
 +
Description: ldiskfs error: XXX blocks in bitmap, YYY in gd<br>
 +
Details: If blocks per group is less than blocksize*8, set rest of the bitmap to 1.
  
Frequency: only if filesystem is inconsistent
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
 +
Severity: major<br>
 +
Frequency: Application do stride read on lustre<br>
 +
Description: The read performance will drop a lot if the application does stride read.<br>
 +
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: 11673
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15953 15953]'''
 +
Severity: normal<br>
 +
Description: more ldlm soft lockups<br>
 +
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.
  
Description: handle "serious error: objid * already exists" more gracefully
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]'''
 +
Severity: enhancement<br>
 +
Description: add -gid, -group, -uid, -user options to lfs find<br>
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15284 15284]'''
 +
Severity: enhancement<br>
 +
Description: tool to recover objects put in lost+found by e2fsck<br>
 +
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<br>
 +
Frequency: rare<br>
 +
Description: this bug _only_ happens when inode quota limitation is very low (less than 12), so that inode quota unit is 1 at initialization.<br>
 +
Details: if remaining quota equates 1, it is a sign to demonstate that quota is effective now. So least quota qunit should be 2.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15950 15950]'''
 +
Severity: normal<br>
 +
Frequency: rare, using O_DIRECT only<br>
 +
Description: Hung threads in invalidate_inode_pages2_range<br>
 +
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.
  
Frequency: rarely
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15684 15684]'''
 +
Severity: normal<br>
 +
Frequency: rare, during shutdown<br>
 +
Description: Procfs and llog threads access destoryed import sometimes.<br>
 +
Details: Sync the import destoryed process with procfs and llog threads by the import refcount and semaphore.
  
Bugzilla: 13570
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15674 15674]'''
 +
Severity: major<br>
 +
Description: mds fails to respond, threads stuck in ldlm_completion_ast<br>
 +
Details: Sort source/child resource pair after updating child resource.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16226 16226]'''
 +
Severity: major<br>
 +
Frequency: rare<br>
 +
Description: kernel BUG at ldiskfs2_ext_new_extent_cb<br>
 +
Details: If insertion of an extent fails, then discard the inode preallocation and free data blocks else it can lead to duplicate blocks.
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16199 16199]'''
 +
Severity: normal<br>
 +
Description: don't always update ctime in ext3_xattr_set_handle()<br> 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<br>
 +
Description: add quota statistics<br>
 +
Details: 1. sort out quota proc entries and proc code.  2. add quota statistics
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16125 16125]'''
 +
Severity: normal<br>
 +
Frequency: often<br>
 +
Description: quotas are not honored with O_DIRECT<br>
 +
Details: all writes with the flag O_DIRECT will use grants which leads to this problem. Now using OBD_BRW_SYNC to guard this.
  
Frequency: when using O_DIRECT and quotas
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15713 15713]'''
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16362 16362]'''
 +
Severity: major<br>
 +
Frequency: rare<br>
 +
Description: Assertion in iopen_connect_dentry in 1.6.3<br>
 +
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: 13930
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16496 16496]'''
 +
Severity: normal<br>
 +
Description: assertion failure in ldlm_handle2lock()<br>
 +
Details: fix a race between class_handle_unhash() and class_handle2object() introduced in lustre 1.6.5 by bug 13622.
  
Description: Incorrect file ownership on O_DIRECT output files
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15899 15899]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: Pools downgrade compatibility<br>
 +
Details: Files striped across pools in future (1.8) releases will be properly understood if the server is downgraded to this version.
  
Details: block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT.
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12755 12755]'''
 +
Severity: minor<br>
 +
Frequency: rare<br>
 +
Description: Kernel BUG: sd_iostats_bump: unexpected disk index<br>
 +
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<br>
 +
Frequency: rare<br>
 +
Description: oops in sd_iostats_seq_show()<br>
 +
Details: unloading/reloading the scsi low level driver triggers a kernel bug when trying to access the sd iostat file.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16404 16404]'''
 +
Severity: major<br>
 +
Frequency: rare<br>
 +
Description: Kernel panics during QLogic driver reload<br>
 +
Details: REQ_BLOCK_PC requests are not handled properly in the sd iostat patch, causing memory corruption.
  
Frequency: always
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16140 16140]'''
 +
Severity: minor<br>
 +
Description: journal_dev option does not work in b1_6<br>
 +
Details: pass mount option during pre-mount.
  
Bugzilla: 13976
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10555 10555]'''
 +
Severity: enhancement<br>
 +
Description: Add a FIEMAP (FIle Extent MAP) ioctl for ldiskfs<br>
 +
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.
  
Description: touch file failed when fs is not full
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16972 16972]'''
 +
Severity: normal<br>
 +
Frequency: only with adaptive timeout enabled<br>
 +
Description: DEBUG_REQ() bad paging request<br>
 +
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.
  
Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16813 16813]'''
 +
Severity: normal<br>
 +
Frequency: only on Cray X2<br>
 +
Description: X2 build failures<br>
 +
Details: fix build failures on Cray X2.
  
 +
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16303 16303]'''
 +
Severity: major<br>
 +
Frequency: Only on FC kernels 2.6.22+<br>
 +
Description: oops in statahead<br>
 +
Details: Do not drop reference count for the dentry from VFS when lookup, VFS will do that by itself.
  
Severity: normal
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=17024 17024]'''
 +
Severity: major<br>
 +
Description: Lustre oops in {:ptlrpc:ptlrpc_server_free_request+373}<br>
 +
Details: In case of memory pressure, list_del() can be called twice on req->rq_history_list, causing a kernel oops.
  
Frequency: always
+
=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
  
Bugzilla: 13805
+
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)
  
Description: data checksumming impacts single node performance
+
Client support for unpatched kernels: (see [[Patchless Client]])
 +
* 2.6.16 - 2.6.22 vanilla (kernel.org)
  
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.  
+
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
  
Severity: minor
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Frequency: when lov objid is destroyed
+
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].
  
Bugzilla: 14222
+
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].
  
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.  
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14309 14309]'''
 +
Severity: normal<br>
 +
Description: RPM packages did not include InfinBand support<br>
 +
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<br>
 +
Frequency: only with administrator action<br>
 +
Description: mount failure if config log has invalid conf_param setting<br>
 +
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.
  
Severity: minor
+
*'''Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=16172 16172]'''
 +
Severity: major<br>
 +
Frequency: Application do stride read on lustre<br>
 +
Description: The read performance will drop a lot if the application does stride read.<br>
 +
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.
  
Frequency: rarely
+
=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
  
Bugzilla: 12948
+
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)
  
Description: buffer overruns could theoretically occur
+
Client support for unpatched kernels: (see [[Patchless Client]])
 +
* 2.6.16 - 2.6.22 vanilla (kernel.org)
  
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.  
+
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
  
Severity: minor
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Bugzilla: 13732
+
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].
  
Description: change order of libsysio includes
+
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].
  
Details: '#include sysio.h' should always come before '#include xtio.h'
+
*Severity: critical
  
 +
Frequency: very rare, if additional xattrs are used on kernels >= 2.6.12
  
=Changes from v1.6.2 to v1.6.3=
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15777 15777]
  
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
+
Description: MDS may lose file striping (and hence file data) in some cases
  
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)
+
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.
  
Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)
+
*Severity: enhancement
  
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12191 12191]
  
Recommended e2fsprogs version: 1.40.2-cfs1
+
Description: add message levels for liblustreapi
  
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
+
*Severity: minor
  
Severity: enhancement
+
Frequency: rare, only if {mds,oss}_num_threads is specified
  
Bugzilla: 12192
+
Bugzilla : [https://bugzilla.lustre.org/show_bug.cgi?id=15759 15759]
  
Description: llapi_file_create() does not allow some changes
+
Description: MDS or OSS service threads fail startup with -24 (-EMFILE)
  
Details: add llapi_file_open() that allows specifying the file creation mode and open flags, and also returns an open file handle.  
+
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
  
Severity: enhancement
+
Frequency: rare
  
Bugzilla: 12743
+
Bugzilla   : [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]
  
Description: df doesn't work properly if diskfs blocksize != 4K
+
Description: MDT cannot be unmounted, reporting "Mount still busy"
  
Details: Choose biggest blocksize of OST's as the LOV's blocksize.  
+
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
  
Severity: enhancement
+
Frequency: rare
  
Bugzilla: 11248
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13380 13380]
  
Description: merge and cleanup kernel patches.
+
Description: fix for occasional failure case of -ENOSPC in recovery-small tests
  
Details: Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.  
+
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
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14326 14326]
  
Bugzilla: 13039
+
Description: Use old size assignment to avoid deadlock
  
Description: RedHat Update kernel for RHEL5
+
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.
  
Details: Kernel config file for RHEL5.
+
*Severity: normal
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14655 14655]
  
Severity: enhancement
+
Description: Use __u64 instead of int for valid bits
  
Bugzilla: 12446
+
*Severity: normal
  
Description: OSS needs mutliple precreate threads
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14746 14746]
  
Details: Add ability to start more than one create thread per OSS.
+
Description: resolve "_IOWR redefined" build error on SLES10
  
 +
*Severity: normal
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14763 14763]
  
Bugzilla: 13039
+
Description: dump the memory debugging after all modules are unloaded to suppress false negative in conf_sanity test 39
  
Description: RedHat Update kernel for RHEL5
+
*Severity: normal
  
Details: Modify the kernel config file more closer RHEL5.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14872 14872]
  
 +
Description: the recovery timer never expires
  
Severity: enhancement
+
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.
  
Bugzilla: 13360
+
*Severity: normal
  
Description: Build failure against Centos5 (RHEL5)
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15521 15521]
  
Details: Define PAGE_SIZE when it isn't present.
+
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: enhancement
+
*Severity: normal
  
Bugzilla: 11401
+
Frequency: always with interactive lfs
  
Description: client-side metadata stat-ahead during readdir(directory readahead)
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15212 15212]
  
Details: perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein
+
Description: Reinitialize optind to 0 so that interactive lfs works in all cases
  
 +
*Severity: normal
  
Severity: enhancement
+
Frequency: with multiple concurrent readdir processes in same directory
  
Bugzilla: 11230
+
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: Tune the kernel for good SCSI performance.  
+
Description: misc fixes for directory readahead.
  
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.  
+
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
  
Severity: critical
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15316 15316]
  
Frequency: Always for filesystems larger than 2TB on 32-bit systems.
+
Description: build kernel-ib packages for OFED 1.3 in our release cycle
  
Bugzilla: 13547 , 13627
+
*Severity: normal
  
Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15036 15036]
  
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.
+
Description: incore types cleaning in quota code (with respect to 64-bit limits)
  
 +
Details: several u32 variables declarations are replaced with u64 declarations
  
Severity: major
+
*Severity: minor
  
Bugzilla: 13236
+
Frequency: always
  
Description: TOE Kernel panic by ksocklnd
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]
  
Details: offloaded sockets provide their own implementation of sendpage, can't call tcp_sendpage() directly
+
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: major
+
*Severity: normal
  
Bugzilla: 13482
+
Frequency: rare
  
Description: build error
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14803 14803]
  
Details: fix typos in gmlnd, ptllnd and viblnd
+
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: major
+
*Severity: normal
  
Bugzilla: 12932
+
Frequency: very rare
  
Description: obd_health_check_timeout too short
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15069 15069]
  
Details: set obd_health_check_timeout as 1.5x of obd_timeout
+
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: major
+
*Severity: enhancement
  
Frequency: only with quota on the root user
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]
  
Bugzilla: 12223
+
Description: Update kernel to SLES9 2.6.5-7.311.
  
Description: mds_obd_create error creating tmp object
+
*Severity: enhancement
  
Details: When the user sets quota on root, llog will be affected and can't create files and write files.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15240 15240]
  
 +
Description: Update kernel to RHEL4 2.6.9-67.0.7.
  
Severity: normal
+
*Severity: normal
  
Bugzilla: 12782
+
Frequency: always
  
Description: /proc/sys/lnet has non-sysctl entries
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14856 14856]
  
Details: Updating dump_kernel/daemon_file/debug_mb to use sysctl variables
+
Frequency: on PPC only
  
 +
Description: not convert ost objects for directory because it's not exist.
  
Severity: normal
+
Details: ll_dir_getstripe assume directory has ost objects but this wrong.
  
Bugzilla: 10778
+
*Severity: enhancement
  
Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15517 15517]
  
Details: races between lnd_shutdown and peer creation prevent lnd_shutdown from finishing.  
+
Description: Fix warnings with compile liblustre at sles10/rhel5 which have __u64 as usingied long long type.
  
 +
*Severity: minor
  
Severity: normal
+
Frequency: rare, on shutdown
  
Bugzilla: 13279
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15210 15210]
  
Description: open files rlimit 1024 reached while liblustre testing
+
Description: race process AST vs remove callback
  
Details: ulnds/socklnd must close open socket after unsuccessful 'say hello' attempt.  
+
Details: removing callback before disconnect import open race with processing callback.
  
 +
*Severity: enhancement
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15416 15416]
  
Frequency: always on directories with default striping set
+
Description: Update kernel to SLES9 2.6.5-7.311.
  
Bugzilla: 12836
+
*Severity: enhancement
  
Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12652 12652]
  
Details: Avoid lov_verify_lmm_common() on directory with -1 stripe count.
+
Description: Files open for execute are not marked busy on SLES10
  
 +
Details: Add FMODE_EXEC to SLES10 SP1 server kernel series.
  
Severity: normal
+
*Severity: enhancement
  
Frequency: Always on ia64 patchless client, and possibly others.
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13397 13397]
  
Bugzilla: 12826
+
Description: Add server support for vanilla-2.6.22.14.
  
Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
+
*Severity: normal
  
Details: This allows the patchless client to be loaded on architectures without this export.
+
Frequency: occasional
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13375 13375]
  
Severity: normal
+
Description: Avoid lov_create() getting stuck in obd_statfs_rqset()
  
Frequency: rare
+
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.
  
Bugzilla: 13142
+
*Severity: enhancement
  
Description: disorder of journal start and llog_add cause deadlock.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3055 3055]
  
Details: in llog_origin_connect, journal start should happen before llog_add keep the same order as other functions to avoid the deadlock.
+
Description: Disable adaptive timeouts by default
  
 +
*Severity: major
  
Severity: normal
+
Frequency: on network error
  
Frequency: occasionally when using NFS
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15027 15027]
  
Bugzilla: 13030
+
Description: panic with double free request if network error
  
Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
+
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.
  
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: rare, on recovery
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14533 14533]
  
Frequency: Occasionally with failover
+
Description: read procfs can produce deadlock in some situation
  
Bugzilla: 12459
+
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.
  
Description: Client eviction due to failover config
+
*Severity: enhancement
  
Details: after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15152 15152]
  
 +
Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
  
Severity: normal
+
*Severity: major
  
Frequency: only with liblustre clients on XT3
+
Frequency: frequent on X2 node
  
Bugzilla: 12418
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15010 15010]
  
Description: evictions taking too long
+
Description: mdc_set_open_replay_data LBUG
  
Details: allow llrd to evict clients directly on OSTs
+
Details: Set replay data for requests that are eligible for replay.
  
 +
*Severity: normal
  
Severity: normal
+
Frequency: common
  
Bugzilla: 13125
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14321 14321]
  
Description: osts not allocated evenly to files
+
Description: lustre_mgs: operation 101 on unconnected MGS
  
Details: change the condition to increase offset_idx
+
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
  
Severity: normal
+
Frequency: rare, depends on device drivers and load
  
Bugzilla: 13436
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]
  
Description: Only those disconnect error should be returned by rq_status.
+
Description: MDS or OSS nodes crash due to stack overflow
  
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.  
+
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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876 14876]
 +
 
 +
Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
  
Bugzilla: 13600
+
*Severity: enhancement
  
Description: "lfs find -obd UUID" prints directories
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858 14858]
  
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.  
+
Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
  
 +
*Severity: enhancement
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14720 14720]
  
Bugzilla: 13596
+
Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
  
Description: MDS hang after unclean shutdown of lots of clients
+
*Serverity: enhancement
  
Details: Never resend AST requests.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793 14793]
  
 +
Description: Update RHEL4 kernel to 2.6.9-67.0.4.
  
Severity: normal
+
*Severity: minor
  
Frequency: Always, for kernels after 2.6.16
+
Frequency: rare on shutdown OST
  
Bugzilla: 13304
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13196 13196]
  
Description: Fix warning idr_remove called for id=.. which is not allocated.
+
Description: Don't allow skipping OSTs if index has been specified.
Details: Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super.  
 
  
 +
Details: Don't allow skipping OSTs if index has been specified, make locking in internal create lots better.
  
Severity: minor
+
*Severity: normal
  
Bugzilla: 12186
+
Frequency: rare
  
Description: Fix errors in lfs documentation
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14421 14421]
  
Details: Fixes man pages
+
Description: ASSERTION(!PageDirty(page)) failed
  
 +
Details: Wrong check could lead to an assertion failure under specific load patterns.
  
Severity: minor
+
*Severity: normal
  
 
Frequency: rare
 
Frequency: rare
  
Bugzilla: 12588
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12228 12228]
  
Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly.
+
Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
  
Details: void sending multiple quota reqs to mds, which will keep the status between the reqs.  
+
Details: access to bitfield in structure is always rounded to long and this produce problem with not atomic change any bit.
  
 +
*Severity: normal
  
Severity: cleanup
+
Frequency: always
  
Bugzilla: 13532
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13647 13647]
  
Description: rewrite ext2-derived code in llite/dir.c and obdclass/uuid.c
+
Description: Lustre 'make rpms' failed.
  
Details: rewrite inherited code (uuid parsing code from ext2 utils and readdir code from ext3) from scratch preserving functionality.  
+
Details: Remove ldiskfs spec file to avoids rpmbuild be confused when builds Lustre rpms from tarball.
  
 +
*Severity: enhancement
  
=Changes from v1.6.1 to v1.6.2=
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14498 14498]
  
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)
+
Description: Update to SLES9 SP4 kernel-2.6.5-7.308.
  
Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?
+
*Severity: normal
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.
+
Frequency: rare on shutdown OST
  
Recommended e2fsprogs version: 1.39.cfs8
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14608 14608]
  
Note that reiserfs quotas are disabled on SLES 10 in this kernel.  
+
Description: If llog cancel was not send before clean_exports phase, this can produce deadlock in llog code.
  
Severity: enhancement
+
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.
  
Bugzilla: 12786
+
*Severity: normal
  
Description: lfs setstripe enhancement
+
Frequency: only if OST index is skipped
  
Details: Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14607 14607]
  
 +
Description: NULL lov_tgts causing MDS oops
  
Severity: enhancement
+
Details: more safe checks for NULL lov_tgts for avoid oops.
  
Bugzilla: 12211
+
*Severity: enhancement
  
Description: randomly memory allocation failure util
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14531 14531]
  
Details: Make lustre randomly failed allocating memory for testing purpose.  
+
Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
  
 +
*Severity: enhancement
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14368 14368]
  
Bugzilla: 10786
+
Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
  
Description: omit set fsid for export NFS
+
*Severity: normal
  
Details: fix set/restore device id for avoid EMFILE error and mark lustre fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
+
Frequency: always
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14136 14136]
  
Severity: enhancement
+
Description: make mgs_setparam() handle fsname containing dash
  
Bugzilla: 10595
+
Details: fsname containing a dash does not work with lctl conf_param
  
Description: Error message improvement.
+
*Severity: enhancement
  
Details: Merging of two LCONSOLE_ERROR_MSG into one.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14288 14288]
  
 +
Description: Update to RHEL4 Update-6 kernel-2.6.9-67.EL.
  
Severity: enhancement
+
*Severity: normal
  
Bugzilla: 12606
+
Frequency: rare, in recovery and (or) destroy lovobjid file.
  
Description: don't use GFP_* in generic Lustre code.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12702 12702]
  
Details: Use cfs_alloc_* functions and CFS_* flags for code portability.  
+
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
+
*Severity: enhancement
  
Bugzilla: 12333
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14388 14388]
  
Description: obdclass is limited by single OBD_ALLOC(idarray)
+
Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
  
Details: replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
+
*Severity: enhancement
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14289 14289]
  
Severity: enhancement
+
Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
  
Bugzilla: 12415
+
Details: Use d_move_locked instead of __d_move.
  
Description: updated patchess for new RHEL4 kernel
+
*Severity: major
  
Details: Fixed ext3-unlink-race.patch per Kalpak's comment.
+
Frequency: rare, at shutdown
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14260 14260]
  
Severity: enhancement
+
Description: access already free / zero obd_namespace.
  
Bugzilla: 13006
+
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.
  
Description: warnings with build patchless client with vanila 2.6.19 and up
+
*Severity: minor
  
Details: change old ctl_table style and replace ctl_table/ctl_table_header with cfs_sysctl_table_t/cfs_sysctl_table_header_t
+
Frequency: only at startup
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14418 14418]
  
Severity: enhancement
+
Description: not alloc memory with spinlock held.
  
Bugzilla: 13093
+
Details: allocation memory with GFP_KERNEL can produce sleep deadlock, if any spinlock held.
  
Description: O_DIRECT bypasses client statistics.
+
*Severity: normal
  
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().
+
Frequency: always
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14270 14270]
  
Severity: enhancement
+
Description: lfs find does not continue on file error
  
Bugzilla: 13249
+
Details: Continue other files processing when a file/dir is absent.
  
Description: Kernel patches for SLES9 2.6.5-7.286 kernel
+
*Severity: normal
  
Details: Update target/ChangeLog/which_patch .  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11791 11791]
  
 +
Description: Inconsistent usage of lustre_pack_reply()
  
Severity: enhancement
+
Details: Standardize the usage of lustre_pack_reply() such that it always generate a CERROR on failure.
  
Bugzilla: 12955
+
*Severity: normal
  
Description: jbd statistics
+
Frequency: very rare
  
Details: Port older jbd statistics patch for sles10
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=3462 3462]
  
 +
Description: Fix replay if there is an un-replied request and open
  
Severity: enhancement
+
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.
  
Bugzilla: 13360
+
*Severity: enhancement
  
Description: Build failure against Centos5 (RHEL5)
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13969 13969]
  
Details: Use getpagesize() instead of PAGE_SIZE.  
+
Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
  
 +
*Severity: enhancement
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13874 13874]
  
Frequency: after network failures
+
Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
  
Bugzilla: 12769
+
*Severity: enhancement
  
Description: Add sync option to mount_lustre.c
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13889 13889]
  
Details: Client loses data written to lustre after a network interruption.  
+
Description: Update to SLES9 kernel-2.6.5-7.287.3.
  
 +
*Severity: enhancement
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14041 14041]
  
Frequency: mds/oss recovery
+
Description: Update to RHEL4 kernel-2.6.9-55.0.12.EL.
  
Bugzilla: 10800
+
*Severity: enhancement
  
Description: llog ctxt is refrenced after it has been freed.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13690 13690]
  
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.
+
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: normal
+
*Severity: enhancement
  
Frequency: only for SLES10
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11622 11622]
  
Bugzilla: 12771
+
Description: Lustre Page Accounting
  
Description: Update kernel patch for SLES10 SP1
+
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.
  
Details: Add patch blkdev_tunables-2.6-sles10.patch to 2.6-sles10.series.
+
*Severity: normal
  
 +
Frequency: only if debugging is disabled
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13497 13497]
  
Bugzilla: 11802
+
Description: LASSERT_{REQ,REP}SWAB macros are buggy
  
Description: lustre support for RHEL5
+
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.
  
Details: Add support for RHEL5.
+
*Severity: normal
  
 +
Frequency: rare
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13888 13888]
  
Frequency: rare
+
Description: interrupt oig_wait produce painc on resend.
  
Bugzilla: 11756
+
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.
  
Description: umount blocks forever on error
+
*Severity: enhancement
  
Details: In result of wrong using obd_no_recov and obd_force flags client can hand if cancel or some other requests is lost.  
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11089 11089]
  
 +
Description: organize the server-side client stats on per-nid basis
  
Severity: normal
+
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.
  
Frequency: Only for SLES
+
*Severity: normal
  
Bugzilla: 13177
+
Frequency: rare
  
Description: sanity_quota fail test_1
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12266 12266]
  
Details: There are multiple occurences of $TSTUSR in SLES's /etc/group file, which makes TSTID[2] inunique.
+
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
+
*Severity: normal
  
Frequency: rare
+
Frequency: always
  
Bugzilla: 9977
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]
  
Description: lvbo_init failed for resource with missing objects.
+
Description: touch file failed when fs is not full
  
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.  
+
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
  
Severity: normal
+
Frequency: only for Cray XT3
Frequency: When flocks are used.
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12829 12829] [https://bugzilla.lustre.org/show_bug.cgi?id=13455 13455]
  
Severity: normal
+
Description: Changing primary group doesn't change the group lustre assigns to a file
Frequency: Rare
 
Bugzilla: 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.
 
  
 +
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: normal
+
*Severity: enhancement
Frequency: only with deactivated OSTs
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12749 12749]
Bugzilla: 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.  
 
  
 +
Description: Root Squash Functionality
  
Severity: minor
+
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.
Frequency: rare
 
Bugzilla: 13147
 
Description: block reactivating mgc import until all deactivates complete
 
Details: Fix race when failing back MDT/MGS to itself (testing)
 
  
 +
*Severity: enhancement
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10718 10718]
Frequency: only for Cray XT3
 
Bugzilla: 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
 
  
 +
Description: Slow trucate/writes to huge files at high offsets.
  
Severity: minor
+
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.
Frequency: only with liblustre
+
 
Bugzilla: 12790
+
*Severity: normal
Description: Liblustre is not releasing flock locks on file close.  
 
Details: Release flock locks on file close.
 
  
 +
Frequency: common
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14379 14379]
Frequency: only for RHEL4
 
Bugzilla: 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.  
 
  
 +
Description: Too many locks accumulating on client during NFS usage
  
Severity: minor
+
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.
Frequency: rare
 
Bugzilla: 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: normal
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14477 14477]
Frequency: rare
 
Bugzilla: 13276
 
Description: Oops in read and write path when failing to allocate lock.  
 
Details: Check if lock allocation failed and return error back.  
 
  
 +
Description: Hit ASSERTION(obd->obd_stopping == 1) failed in some setup failed situation.
  
Changes from v1.6.0.1 to v1.6.1
+
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.
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: 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
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14398 14398]
Bugzilla: 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.  
 
  
 +
Description: Allow masking D_WARNING, D_ERROR messages from console
  
Severity: enhancement
+
Details: Console messages can now be disabled via lnet.printk.
Bugzilla: 10997
 
Description: lfs setstripe use optional parameters instead of postional parameters.  
 
  
 +
*Severity: normal
  
Severity: enhancement
+
Frequency: always
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14614 14614]
  
Severity: enhancement
+
Description: User code with malformed file open parameter crashes client node
Bugzilla: 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.
 
  
 +
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: enhancement
+
*Severity: normal
Bugzilla: 11563
 
Description: Add -o localflock option to simulate old noflock behaviour.
 
Details: This will achieve local-only flock/fcntl locks coherentness.
 
  
 +
Frequency: always
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10600 10600]
Bugzilla: 11647
 
Description: update patchless client
 
Details: Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
 
  
 +
Description: shrink/enlarge qunit size when needed; fix the problem of coarse grain of quota doing harm to quota's accuracy
  
Severity: enhancement
+
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.
Bugzilla: 10589
+
 
Description: metadata RPC reduction (e.g. for rm performance)
+
*Severity: normal
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.  
+
 
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14225 14225]
  
 +
Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
  
Severity: enhancement
+
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.
Bugzilla: 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: normal
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14360 14360]
Bugzilla: 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.  
 
  
 +
Description: Heavy nfs access might result in deadlocks
  
Severity: enhancement
+
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.
Bugzilla: 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: normal
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14443 14443]
Bugzilla: 11039
 
Description: 2.6.18 server support (lustre 1.6.1)
 
Details: Support for 2.6.18 kernels on the server side.  
 
  
 +
Description: 35% write performance drop with ldiskfs2 when quotas are on
  
Severity: enhancement
+
Details: Enable ext3 journalled quota by default to improve performance when quotas are turned on.
Bugzilla: 12678
 
Description: remove fs_prep_san_write operation and related patches
 
Details: remove the ext3-san-jdike patches which are no longer useful.  
 
  
 +
*Severity: normal
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13843 13843]
Bugzilla: 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.  
 
  
 +
Description: Client eviction while running blogbench
  
Severity: enhancement
+
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.
Bugzilla: 11721
 
Description: Add printing inode info into message about error in writepage.  
 
  
 +
*Severity: normal
  
Severity: major
+
Frequency: RHEL4 only
Bugzilla: 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().
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618 14618]
  
Severity: major
+
Description: mkfs is very slow on IA64/RHEL4
Frequency: only with mballoc3 code and deep extent trees
 
Bugzilla: 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.
 
  
 +
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
+
*Severity: normal
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Frequency: PPC/PPC64 only
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14845 14845]
Frequency: 2.6.18 servers only
 
Bugzilla: 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.  
 
  
 +
Description: conflicts between asm-ppc64/types.h and lustre_types.h
  
Severity: normal
+
Details: fix duplicated definitions between asm-ppc64/types.h and lustre_types.h on PPC.
Frequency: rare
+
 
Bugzilla: 12470
+
*Severity: normal
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.  
 
  
 +
Frequency: PPC/PPC64 only
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14844 14844]
Frequency: rare
 
Bugzilla: 11722
 
Description: Transient SCSI error results in persistent IO issue
 
Details: iobuf->dr_error is not reinitialized to 0 between two uses.  
 
  
 +
Description: asm-ppc/segment.h does not exist
  
Severity: normal
+
Details: fix compile issue on PPC.
Frequency: sometimes when underlying device returns I/O errors
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]
Frequency: SLES10 only
 
Bugzilla: 12538
 
Description: sanity-quota.sh quotacheck failed: rc = -22
 
Details: Quotas cannot be enabled on SLES10.
 
  
 +
Description: data checksumming impacts single node performance
  
Severity: normal
+
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.
Frequency: liblustre clients only
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14648 14648]
Frequency: rare
 
Bugzilla: 11315
 
Description: OST "spontaneously" evicts client; client has imp_pingable == 0
 
Details: Due to a race condition, liblustre clients were occasionally evicted incorrectly.
 
  
 +
Description: use adler32 for page checksums
  
Severity: normal
+
Details: when available, use the Adler-32 algorithm instead of CRC32 for page checksums.
Frequency: during server recovery
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14864 14864]
Frequency: rare
 
Bugzilla: 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.  
 
  
 +
Description: better handle error messages in extents code
  
Severity: normal
+
*Severity: enhancement
Frequency: rare
+
 
Bugzilla: 12477
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14729 14729]
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.  
 
  
 +
Description: SNMP support enhancement
  
Severity: normal
+
Details: Adding total number of sampled request for an MDS node in snmp support.
Frequency: when reconnecting
 
Bugzilla: 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: enhancement
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14748 14748]
Frequency: when client reconnects to OST
 
Bugzilla: 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.  
 
  
 +
Description: Optimize ldlm waiting list processing for PR extent locks
  
Severity: normal
+
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.
Frequency: rare
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14774 14774]
Frequency: when client is evicted
 
Bugzilla: 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.  
 
  
 +
Description: Time out and refuse to reconnect
  
Severity: normal
+
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.
Frequency: rare
 
Bugzilla: 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: major
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775 14775]
Frequency: only with 2.4 kernel
 
Bugzilla: 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.  
 
  
 +
Description: Client not clear own cache if answer to reconnect is lost.
  
Severity: normal
+
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.
Frequency: rare
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14483 14483]
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Description: Detect stride IO mode in read-ahead
  
Severity: normal
+
Details: When a client does stride read, read-ahead should detect that and read-ahead pages according to the detected stride pattern.
Frequency: rare
 
Bugzilla: 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
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15033 15033]
Frequency: rare
 
Bugzilla: 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.  
 
  
 +
Description: build for X2 fails
  
Severity: normal
+
Details: fix compile issue on Cray systems.
Bugzilla: 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: enhancement
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13371 13371]
Frequency: rare, only in recovery.
 
Bugzilla: 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.
 
  
 +
Description: implement readv/writev APIs(aio_read/aio_writes in newer kernels)
  
Severity: normal
+
Details: This greatly improves speed of NFS writes on 2.6 kernels.
Bugzilla: 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
  
Severity: normal
+
Frequency: only on PPC/SLES10
Frequency: always
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14855 14855]
  
Severity: normal
+
Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
Bugzilla: 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.  
 
  
 +
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
+
*Severity: normal
Bugzilla: 12576
 
Description: Not Check whether lov_tgts is NULL in some lov functions
 
Details: Checking whether lov_tgts is NULL in some functions.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14257 14257]
  
Severity: normal
+
Description: LASSERT on MDS when client holding flock lock dies
Bugzilla: 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.
 
  
 +
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
+
*Severity: normal
Bugzilla: 12784
 
Description: bad return value and errno from fcntl call
 
Details: In liblustre API, errno should be a negative value if error happens.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15188 15188]
  
Severity: normal
+
Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
Bugzilla: 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.
 
  
 +
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: normal
+
*Severity: minor
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15566 15566]
  
Severity: normal
+
Description: Update an obsolete wirecheck.c generator
Frequency: only for i686
 
Bugzilla: 12695
 
Description: 1.4.11 RC1 build fails for RHEL 4, i686
 
Details: Fixed config variable for build.  
 
  
 +
Details: Update wirecheck.c/wirehdr.c and regenerate wiretest.c
  
Severity: normal
+
*Severity: normal
Frequency: rare
 
Bugzilla: 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
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14712 14712]
  
Severity: normal
+
Description: Client can panic on open sometimes
Frequency: rare
 
Bugzilla: 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.
 
  
 +
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
+
*Severity: normal
Frequency: when qunit size is too small(less than 20M)
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14410 14410]
  
Severity: normal
+
Description: performance in 1.6.3
Frequency: rare
 
Bugzilla: 12629
 
Description: Deadlock during metadata tests
 
Details: in prune_dir_dentries(), shrink_dcache_parent() should not be called with the per-dentry lock held.  
 
  
 +
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
+
*Severity: normal
Frequency: SLES9 only
 
Bugzilla: 12744
 
Description: Lustre patched kernel for SLES9 SP3 has NR_CPUS set to 8
 
Details: set CONFIG_NR_CPUS to 128 instead of 8.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15198 15198]
  
Severity: normal
+
Description: LDLM soft lockups - improvement
Frequency: rare
+
 
Bugzilla: 11324
+
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.
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
  
Severity: normal
 
 
Frequency: rare
 
Frequency: rare
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14036 14036]
 +
 +
Description: lfs quota fails with deactivated OSTS
  
Severity: normal
+
Details: With this patch, three improvements are included:
Bugzilla: 11301
+
    1. detete the softlimit in mds and osts when use "lfs quota".
Description: parallel lock callbacks
+
    2. display the inaccurate data in the output of "lfs quota".
Details: Instead of sending blocking and completion callbacks as separated requests, adding them to a set and sending in parallel.  
+
    3. try to get quota info when "lfs quota" is executed.
  
 +
*Severity: normal
  
Severity: normal
+
Frequency: rare
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15776 15776]
  
Severity: normal
+
Description: Extent locks not granted with no conflicts sometimes.
Bugzilla: 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.  
 
  
 +
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: normal
+
Severity: major
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=15712 15712]
  
Severity: normal
+
Description: ksocknal_create_conn() hit ASSERTION during connection race
Frequency: only for SLES9
 
Bugzilla: 12543
 
Description: Routinely utilize latest Quadrics drivers in CFS releases
 
Details: Update patch qsnet-suse-2.6.patch.
 
  
 +
Details: ksocknal_create_conn() hit ASSERTION during connection race
  
Severity: normal
+
Severity: major
Frequency: only for sles10
 
Bugzilla: 12771
 
Description: Update patches for SLES 10 SP1 kernel.
 
Details: Update the patch vfs_intent-2.6-sles10.patch.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13983 13983]
  
Severity: normal
+
Description: ksocknal_send_hello() hit ASSERTION while connecting race
Frequency: rare
+
 
Bugzilla: 12543
+
Details: ksocknal_send_hello() hit ASSERTION while connecting race
Description: Routinely utilize latest Quadrics drivers in CFS releases
+
 
Details: Update patch qsnet-rhel4-2.6.patch.
+
Severity: major
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14425 14425]
  
Severity: normal
+
Description: o2iblnd/ptllnd credit deadlock in a routed config.
Frequency: rare
 
Bugzilla: 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
 
  
 +
Details: o2iblnd/ptllnd credit deadlock in a routed config.
  
 
Severity: normal
 
Severity: normal
Frequency: only in recovery
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14956 14956]
  
Severity: normal
+
Description: High load after starting lnet
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Details: gmlnd should sleep in rx thread in interruptible way. Otherwise, uptime utility reports high load that looks confusingly.
  
 
Severity: normal
 
Severity: normal
Frequency: oss recovery
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14838 14838]
 +
 +
Description: ksocklnd fails to establish connection if accept_port is high
  
Severity: minor
+
Details: PID remapping must not be done for active (outgoing) connections
Frequency: only with 10000 clients or more
 
Bugzilla: 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.
 
  
 +
=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)
  
Severity: minor
+
Client support for unpatched kernels: (see [[Patchless Client]]) 2.6.16 - 2.6.22 vanilla (kernel.org)
Frequency: nfs export on patchless client
 
Bugzilla: 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
 
  
 +
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).
  
Severity: minor
+
Recommended e2fsprogs version: 1.40.4-cfs1
Frequency: rare
 
Bugzilla: 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().  
 
  
 +
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Severity: minor
+
RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).
Frequency: rare
 
Bugzilla: 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: critical
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14793  14793 ]
Frequency: rare
+
 
Bugzilla: 11658
+
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.
Description: log_commit_thread vs filter_destroy race leads to crash
 
Details: Take import reference before releasing llog record semaphore
 
  
  
Severity: minor
+
*Severity: critical
Frequency: only with huge numbers of clients
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14858  14858 ]
  
Severity: minor
+
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.
Bugzilla: 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
+
*Severity: critical
Frequency: always
 
Bugzilla: 12747
 
Description: fix mal-formatted messages
 
Details: fix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14876  14876 ]
  
Severity: minor
+
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.
Frequency: always in liblustre
 
Bugzilla: 11737
 
Description: wrong IS_ERR implementation in liblustre.h
 
Details: fix IS_ERR implementation in liblustre.h for right detect errors.  
 
  
  
Severity: minor
+
*Severity: normal
Frequency: always
 
Bugzilla: 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.
 
  
 +
Frequency: RHEL4 only
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14618  14618 ]
Frequency: always in patchless client
 
Bugzilla: 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.  
 
  
 +
Description: mkfs is very slow on IA64/RHEL4
  
Severity: minor
+
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.
Frequency: only run on patchless client.
 
Bugzilla: 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
+
*Severity: major
Frequency: only at startup
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14775  14775 ]
  
Severity: minor
+
Description: Client not clear own cache if answer to reconnect is lost.
Frequency: at statup only
 
Bugzilla: 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.  
 
  
 +
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 v1.6.0 to v1.6.0.1
+
=Changes from v1.6.4.1 to v1.6.4.2=
Severity: normal
 
Frequency: on some architectures
 
Bugzilla: 12404
 
Description: 1.6 client sometimes fails to mount from a 1.4 MDT
 
Details: Uninitialized flags sometimes cause configuration commands to be skipped.  
 
  
 +
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)
  
Severity: normal
+
Client support for unpatched kernels: (see [[Patchless Client]]) 2.6.16 - 2.6.22 vanilla (kernel.org)
Frequency: patchless clients only
 
Bugzilla: 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.  
 
  
 +
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).
  
Severity: normal
+
Recommended e2fsprogs version: 1.40.4-cfs1
Frequency: always
 
Bugzilla: 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.  
 
  
 +
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Changes from v1.4.10 to v1.6.0
+
RHEL 4 (patched) and RHEL 5/SLES 10 (patchless) clients behave differently on 'cd' to a removed cwd "./" (refer to Bugzilla 14399).
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: 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: critical
  
Severity: enhancement
+
Frequency: only for relatively new filesystems, when OSTs are in recovery
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14631  14631 ]
  
Severity: enhancement
+
Description: OST objects below id 20000 are deleted, causing data loss
Bugzilla: 4482
 
Description: dynamic OST addition
 
Details: OSTs can now be added to a live filesystem
 
  
 +
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: enhancement
 
Bugzilla: 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
+
*Severity: major
Bugzilla: 4899
 
Description: parallel, asynchronous orphan cleanup
 
Details: orphan cleanup is now performed in separate threads for each OST, allowing parallel non-blocking operation.
 
  
 +
Frequency: rare, depends on device drivers and load
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14529 14529]
Bugzilla: 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.  
 
  
 +
Description: MDS or OSS nodes crash due to stack overflow
  
Severity: enhancement
+
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.
Bugzilla: 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.  
 
  
 +
=Changes from v1.6.4 to v1.6.4.1=
  
Severity: enhancement
+
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
Bugzilla: 10547
 
Description: Lustre message v2
 
Details: Add lustre message format v2.  
 
  
 +
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)
  
Severity: enhancement
+
Client support for unpatched kernels: (see [[Patchless Client]]) 2.6.16 - 2.6.22 vanilla (kernel.org)
Bugzilla: 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.  
 
  
 +
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.
  
Severity: enhancement
+
Recommended e2fsprogs version: 1.40.2-cfs1
Bugzilla: 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.
 
  
 +
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Severity: enhancement
+
*Severity: major
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14433 14433]
  
Severity: enhancement
+
Description: Oops on connection from 1.6.3 client  
Bugzilla: 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.
 
  
 +
Frequency: always, on connection from 1.6.3 client
  
Severity: enhancement
+
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.
Bugzilla: 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.  
 
  
 +
=Changes from v1.6.3 to v1.6.4=
  
Severity: enhancement
+
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
Bugzilla: 22485
 
Description: per-client statistics on server
 
Details: Add ldlm and operations statistics for each client in /proc/fs/lustre/mds|obdfilter/*/exports/  
 
  
 +
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)
  
Severity: enhancement
+
Client support for unpatched kernels: (see [[Patchless Client]]) 2.6.16 - 2.6.22 vanilla (kernel.org)
Bugzilla: 22486
 
Description: improved MDT statistics
 
Details: Add detailed MDT operations statistics in /proc/fs/lustre/mds/*/stats
 
  
 +
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.
  
Severity: enhancement
+
Recommended e2fsprogs version: 1.40.2-cfs1
Bugzilla: 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]
 
  
 +
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
  
Severity: enhancement
+
*Severity: enhancement
Bugzilla: 2258
 
Description: Dynamic service threads
 
Details: Within a small range, start extra service threads automatically when the request queue builds up.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11686 11686]
  
Severity: enhancement
+
Description: Console message flood
Bugzilla: 11229
 
Description: Easy OST removal
 
Details: OSTs can be permanently deactivated with e.g. 'lctl conf_param lustre-OST0001.osc.active=0'
 
  
 +
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: 11335
 
Description: MGS proc entries
 
Details: Added basic proc entries for the MGS showing what filesystems are served.
 
  
 +
*Severity: enhancement
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13521 13521]
Bugzilla: 10998
 
Description: provide MGS failover
 
Details: Added config lock reacquisition after MGS server failover.  
 
  
 +
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: 11461
 
Description: add Linux 2.4 support
 
Details: Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
 
  
 +
*Severity: enhancement
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13128 13128]
Bugzilla: 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.  
 
  
 +
Description: add --type and --size parameters to lfs find
  
Severity: enhancement
+
Details: Enhance lfs find by adding filetype and filesize parameters. Also multiple OBDs can now be specified for the --obd option.  
Bugzilla: 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
+
*Severity: enhancement
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11270 11270]
  
Severity: enhancement
+
Description: eliminate client locks in face of contention
Bugzilla: 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.
 
  
 +
Details: file contention detection and lockless i/o implementation for contended files.
  
Severity: major
 
Frequency: mixed-endian client/server environments
 
Bugzilla: 11214
 
Description: mixed-endian crashes
 
Details: The new msg_v2 system had some failures in mixed-endian environments.
 
  
 +
*Severity: enhancement
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12411 12411]
Frequency: when an incorrect nid is specified during startup
 
Bugzilla: 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.  
 
  
 +
Description: Remove client patches from SLES 10 kernel.
  
Severity: major
+
Details: This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel.  
Frequency: only if OST filesystem is corrupted
 
Bugzilla: 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
+
*Severity: enhancement
Frequency: liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=2369 2369 ]
  
Severity: major
+
Description: use i_size_read and i_size_write in 2.6 port
Frequency: only for devices with external journals
+
 
Bugzilla: 10719
+
Details: replace inode->i_size access with i_size_read/write()
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
+
*Severity: enhancement
Frequency: when setting specific ost indicies
 
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13454 13454]
  
Severity: normal
+
Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla.  
Bugzilla: 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
+
*Severity: enhancement
Bugzilla: 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.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13518 13518]
  
Severity: minor
+
Description: Kernel patches update for RHEL4 2.6.9-55.0.6.  
Frequency: SFS test only (otherwise harmless)
 
Bugzilla: 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.  
 
  
 +
Details: Modify vm-tunables-rhel4.patch.
  
Severity: minor
 
Frequency: always
 
Bugzilla: 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: enhancement
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13452 13452]
Frequency: always as root on SLES
 
Bugzilla: 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").  
 
  
 +
Description: Kernel config for 2.6.18-vanilla.
  
Severity: minor
+
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.  
Frequency: always
 
Bugzilla: 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
+
*Severity: enhancement
Frequency: only for kernels with patches from Lustre below 1.4.3
 
Bugzilla: 11248
 
Description: Remove old rdonly API
 
Details: Remove old rdonly API which unused from at least lustre 1.4.3
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13207 13207]
  
Severity: minor
+
Description: adapt the lustre_config script to support the upgrade case
Frequency: when upgrading from 1.4 while trying to change parameters
 
Bugzilla: 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.
 
  
 +
Details: Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel.
  
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: 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
+
*Severity: critical
Bugzilla: 10916
 
Description: added LNET self test
 
Details: landing b_self_test
 
  
 +
Frequency: always
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13751 13751]
Bugzilla: 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.
 
  
 +
Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
  
Severity: normal
+
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).
Bugzilla: 11680
 
Description: make panic on lbug configurable
 
  
  
Severity: minor
+
*Severity: critical
Bugzilla: 13288
 
Description: Initialize cpumask before use
 
  
 +
Frequency: always
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13748 13748]
Bugzilla: 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.  
 
  
 +
Description: Update RHEL 4 kernel to fix local root privilege escalation.
  
Severity: minor
+
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.  
Details: lnet_clear_peer_table can wait forever if user forgets to clear a lazy portal.  
 
  
  
Severity: minor
+
*Severity: major
Details: libcfs_id2str should check pid against LNET_PID_ANY.
 
  
 +
Frequency: occasional
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14353 14353]
Frequency: rare
 
Bugzilla: 12227
 
Description: cfs_duration_{u,n}sec() wrongly calculate nanosecond part of struct timeval.  
 
Details: do_div() macro is used incorrectly.  
 
  
 +
Description: excessive CPU consumption on client reduces IO performance
  
Changes from v1.4.9 to v1.6.0
+
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.  
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: 10316
 
Description: Fixed console chatter in case of -ETIMEDOUT.  
 
  
  
Severity: enhancement
+
*Severity: major
Bugzilla: 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.
 
  
 +
Frequency: occasional
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13917 13917]
Bugzilla: 11094
 
Description: Multiple instances for o2iblnd
 
Details: Allow multiple instances of o2iblnd to enable networking over multiple HCAs and routing between them.  
 
  
 +
Description: MDS hang or stay in waiting lock
  
Severity: major
+
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.  
Frequency: rare
 
Bugzilla: 12458
 
Description: Assertion failure in kernel ptllnd caused by posting passive bulk buffers before connection establishment complete.  
 
  
  
Severity: major
+
*Severity: major
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Frequency: occasional
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11710 11710]
Frequency: rare
 
Bugzilla: 12432
 
Description: Kernel ptllnd lock ordering issue could hang a node.  
 
  
 +
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: major
 
Frequency: rare
 
Bugzilla: 12016
 
Description: node crash on socket teardown race
 
  
 +
*Severity: normal
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12302 12302]
Frequency: after Ptllnd timeouts and portals congestion
 
Bugzilla: 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.  
 
  
 +
Description: new userspace socklnd
  
Severity: major
+
Details: Old userspace tcpnal that resided in lnet/ulnds/socklnd replaced with new one - usocklnd.  
Frequency: rare
 
Bugzilla: 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
+
*Severity: normal
Frequency: rare
 
Bugzilla: 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.
 
  
 +
Frequency: occasional
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13730 13730]
Bugzilla: 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.  
 
  
 +
Description: Do not fail import if osc_interpret_create gets -EAGAIN
  
Severity: major
+
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.  
Bugzilla: 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
+
*Severity: normal
Frequency: rare
 
Description: gmlnd ignored some transmit errors when finalizing lnet messages.
 
  
 +
Frequency: when removing large files
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13181 13181]
Frequency: rare
 
Bugzilla: 11472
 
Description: Changed the default kqswlnd ntxmsg=512
 
  
 +
Description: scheduling issue during removal of large Lustre files
  
Severity: minor
+
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).  
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
+
*Severity: normal
Frequency: rare
 
Description: ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.
 
  
 +
Frequency: always
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13358 13358]
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.  
 
  
 +
Description: 1.4.11 Can't handle directories with stripe set and extended ACLs
  
Severity: minor
+
Details: Impossible (EPROTO is returned) to access a directory that has a non-default striping and ACLs.
Frequency: 'lctl peer_list' issued on a mx net
 
Bugzilla: 12237
 
Description: Enable lctl's peer_list for MXLND
 
  
  
Changes from v1.4.9 to v1.4.10
+
*Severity: normal
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 (SLES 10)
 
Recommended e2fsprogs version: 1.39.cfs5
 
Note that reiserfs quotas are disabled on SLES 10 in this kernel
 
Severity: enhancement
 
Bugzilla: 11667
 
Description: Add "/proc/sys/lustre/debug_peer_on_timeout" (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT) boolean to control whether to print peer debug info when a client's RPC times out.
 
  
 +
Frequency: only on ppc
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12234 12234]
Bugzilla: 11563
 
Description: Add -o localflock option to simulate old noflock behaviour.  
 
Details: This will achieve local-only flock/fcntl locks coherentness.  
 
  
 +
Description: /proc/fs/lustre/devices broken on ppc
  
Severity: enhancement
+
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.  
Bugzilla: 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
+
*Severity: normal
Bugzilla: 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.
 
  
 +
Frequency: only for rhel5
  
Severity: critical
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13616 13616]
Frequency: occasional, depends on client load and configuration
 
Bugzilla: 12181 , 12203
 
Description: data loss for recently-modified files
 
Details: In some cases it is possible that recently written or created files may not be written to disk in a timely manner (this should normally be within 30s unless client IO load is very high). The problem appears as zero-length files or files that are a multiple of 1MB in size after a client crash or client eviction that are missing data at the end of the file.  
 
  
 +
Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
  
Severity: major
+
Details: Modify the target file & which_kernel.  
Frequency: liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
 
Bugzilla: 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
+
*Severity: normal
Frequency: rare
 
Bugzilla: 10866
 
Description: proc file read during shutdown sometimes raced obd removal, causing node crash
 
Details: Add lock to prevent obd access after proc file removal.
 
  
 +
Frequency: if the uninit_groups feature is enabled on ldiskfs
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13706 13706]
Frequency: only if OST filesystem is corrupted
 
Bugzilla: 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.  
 
  
 +
Description: e2fsck reports "invalid unused inodes count"
  
Severity: major
+
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.  
Frequency: always
 
Bugzilla: 11710
 
Description: add support PG_writeback bit
 
Details: add support for PG_writeback bit for Lustre, for more carefull work with page cache in 2.6 kernel. This also fix some deadlocks and remove hack for work O_SYNC with 2.6 kernel.  
 
  
  
Severity: normal
+
*Severity: normal
Frequency: frequent on thin XT3 nodes
 
Bugzilla: 10802
 
Description: UUID collision on thin XT3 Linux nodes
 
Details: UUIDs on Compute Node Linux XT3 nodes were not generated randomly, since we relied on an insufficiently-seeded PRNG.
 
  
 +
Frequency: only if filesystem is inconsistent
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11673 11673]
Frequency: rare
 
Bugzilla: 11693
 
Description: OSS hangs after "All ost request buffers busy"
 
Details: A deadlock between quota and journal operations caused OSS hangs after printing "All ost request buffers busy."
 
  
 +
Description: handle "serious error: objid * already exists" more gracefully
  
Severity: normal
+
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.  
Frequency: always
 
Bugzilla: 10214
 
Description: make O_SYNC working on 2.6 kernels
 
Details: 2.6 kernels use different method for mark pages for write, so need add a code to lustre for O_SYNC work.  
 
  
  
Severity: normal
+
*Severity: normal
Frequency: Only for files larger than 4GB on 32-bit clients.
 
Bugzilla: 11237
 
Description: improperly doing page alignment of locks
 
Details: Modify lustre core code to use CFS_PAGE_* defines instead of PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
 
  
 
Severity: normal
 
 
Frequency: rarely
 
Frequency: rarely
Bugzilla: 11203
 
Description: RPCs being resent when they shouldn't be
 
Details: Some RPCs that should not be resent are being resent. This can cause inconsistencies in the RPC state machine. Do not resend such requests.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13570 13570]
  
Severity: normal
+
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.
Frequency: rare, only with NFS export
 
Bugzilla: 11669
 
Description: Crash on NFS re-export node
 
Details: under very unusual load conditions an assertion is hit in ll_intent_file_open()
 
  
 +
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: always
 
Bugzilla: 10901
 
Description: large O_DIRECT requests fail under memory pressure/fragmentation
 
Details: Large single O_DIRECT read and write calls can fail to allocate a sufficiently large buffer to process the request. In case of allocation failure the allocation is retried with a smaller buffer and broken into smaller requests.
 
  
 +
*Severity: normal
  
Severity: normal
+
Frequency: when using O_DIRECT and quotas
Frequency: always
 
Bugzilla: 11090
 
Description: versioning check is incomplete
 
Details: Checking the version difference of client vs. server, report error if the gap is too big.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13930 13930]
  
Severity: minor
+
Description: Incorrect file ownership on O_DIRECT output files
Frequency: always on liblustre builds
 
Bugzilla: 11175
 
Description: Cleanup compiler warnings on liblustre
 
  
 +
Details: block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT.
  
Severity: minor
 
Frequency: always on liblustre builds on XT3
 
Bugzilla: 12146
 
Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
 
  
 +
*Severity: normal
  
Severity: minor
 
 
Frequency: always
 
Frequency: always
Bugzilla: 11110
 
Description: Failure to close file and release space on NFS
 
Details: Put inode details into lock acquired in ll_intent_file_open. Use mdc_intent_lock in ll_intent_open to properly detect all kind of errors unhandled by mdc_enqueue.
 
  
 +
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13976 13976]
  
Changes from v1.4.8 to v1.4.9
+
Description: touch file failed when fs is not full
Support for kernels: 2.6.16.21-0.8 (SLES10), 2.6.9-42.0.3EL (RHEL 4), 2.6.5-7.276 (SLES 9), 2.4.21-47.0.1.EL (RHEL 3), 2.6.12.6 vanilla (kernel.org)
 
Support for networks: socklnd - kernels up to 2.6.15 (I believe this is accurate, SLES10), 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
 
Recommended e2fsprogs version: 1.39.cfs2-0
 
The backwards-compatible /proc/sys/portals symlink has been removed in this release. Before upgrading, please ensure that you change any configuration scripts or /etc/sysctl.conf files that access /proc/sys/portals/* or sysctl portals.* to use the corresponding entry in /proc/sys/lnet or sysctl lnet.*. This change can be made in advance of the upgrade on any system running Lustre 1.4.6 or newer, since /proc/sys/lnet was added in that version.
 
Note that reiserfs quotas are temporarily disabled on SLES 10 in this kernel.
 
Severity: enhancement
 
Bugzilla: 11245
 
Description: new ko2iblnd module parameter: ib_mtu
 
Details: the default IB MTU of 2048 performs badly on 23108 Tavor HCAs. You can avoid this problem by setting the MTU to 1024 using this module parameter.
 
  
Severity: enhancement
+
Details: OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full.  
Bugzilla: 11118/11620
 
Description: ptllnd small request message buffer alignment fix
 
Details: Set the PTL_MD_LOCAL_ALIGN8 option on small message receives. Round up small message size on sends in case this option is not supported. 11620 was a defect in the initial implementation which effectively asserted all peers had to be running the correct protocol version which was fixed by always NAK-ing such requests and handling any misalignments they introduce.  
 
  
Severity: enhancement
 
Bugzilla: 11250
 
Description: Patchless ZC(zero copy) socklnd
 
Details: New protocol for socklnd, socklnd can support zero copy without kernel patch, it's compatible with old socklnd. Checksum is moved from tunables to modparams.
 
  
Severity: enhancement
+
*Severity: normal
Bugzilla: 11234
 
Description: Dump XT3 portals traces on kptllnd timeout
 
Details: Set the kptllnd module parameter "ptltrace_on_timeout=1" to dump Cray portals debug traces to a file. The kptllnd module parameter "ptltrace_basename", default "/tmp/lnet-ptltrace", is the basename of the dump file.
 
  
Severity: enhancement
+
Frequency: always
Bugzilla: 10316
 
Description: Allow /proc/sys/lnet/debug to be set symbolically
 
Details: Allow debug and subsystem debug values to be read/set by name in addition to numerically, for ease of use.
 
  
Severity: critical
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13805 13805]
Frequency: MDS failover only, very rarely
 
Bugzilla: 11125
 
Description: "went back in time" messages on mds failover
 
Details: The greatest transno may be lost when the current operation finishes with an error (transno==0) and the client's last_rcvd record is over-written. Save the greatest transno in the mds_last_transno for this case.  
 
  
Severity: major on XT3
+
Description: data checksumming impacts single node performance
Bugzilla: none
 
Description: libcfs overwrites /proc/sys/portals
 
Details: libcfs created a symlink from /proc/sys/portals to /proc/sys/lnet for backwards compatibility. This is no longer required and makes the Cray portals /proc variables inaccessible.
 
  
Severity: major
+
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.  
Frequency: infrequent
 
Bugzilla: 11308
 
Description: kernel ptllnd fix bug in connection re-establishment
 
Details: Kernel ptllnd could produce protocol errors e.g. illegal matchbits and/or violate the credit flow protocol when trying to re-establish a connection with a peer after an error or timeout.  
 
  
Severity: major
 
Frequency: Cray XT3 with more than 4000 clients and multiple jobs
 
Bugzilla: 10906
 
Description: many clients connecting with IO in progress causes connect timeouts
 
Details: Avoid synchronous journal commits to avoid delays caused by many clients connecting/disconnecting when bulk IO is in progress. Queue liblustre connect requests on OST_REQUEST_PORTAL instead of OST_IO_PORTAL to avoid delays behind potentially many pending slow IO requests.
 
  
Severity: major
+
*Severity: minor
Frequency: rare
 
Bugzilla: 10891
 
Description: handle->h_buffer_credits > 0, assertion failure
 
Details: h_buffer_credits is zero after truncate, causing assertion failure. This patch extends the transaction or creates new one after truncate.
 
  
Severity: major
+
Frequency: when lov objid is destroyed
Frequency: rarely, using CFS RAID5 patches in non-standard kernel series
 
Bugzilla: 11313
 
Description: stale data returned from RAID cache
 
Details: If only a small amount of IO is done to the RAID device before reading it again it is possible to get stale data from the RAID cache instead of reading it from disk.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=14222 14222]
Frequency: always for 2.6.16.27-0.6 sles10 kernel
 
Bugzilla: 11641
 
Description: lbuild failure
 
Details: extra -0.6 in SLES10 kernel version confuses lbuild. lustre and Linux kernel calculate different kernel release strings if a localversion file is present in the kernel tarball. The fix deletes the localversion file.  
 
  
Severity: minor
+
Description: mds can't recreate lov objid file.  
Bugzilla: 11312
 
Description: OFED FMR API change
 
Details: This changes parameter usage to reflect a change in ib_fmr_pool_map_phys() between OFED 1.0 and OFED 1.1. Note that FMR support is only used in experimental versions of the o2iblnd - this change does not affect standard usage at all.  
 
  
Severity: minor
+
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.  
Frequency: rarely
 
Description: When kib(nal|lnd)_del_peer() is called upon a peer whose ibp_tx_queue is not empty, kib(nal|lnd)_destroy_peer()'s 'LASSERT(list_empty(&peer->ibp_tx_queue))' will fail.  
 
  
Severity: minor
 
Frequency: rarely
 
Description: When ksocknal_del_peer() is called upon a peer whose ksnp_tx_queue is not empty, ksocknal_destroy_peer()'s 'LASSERT(list_empty(&peer->ksnp_tx_queue))' will fail.
 
  
Severity: minor
+
*Severity: minor
Frequency: very rarely
 
Bugzilla: 10727
 
Description: If ksocknal_lib_setup_sock() fails, a ref on peer is lost. If connd connects a route which has been closed by ksocknal_shutdown(), ksocknal_create_routes() may create new routes which hold references on the peer, causing shutdown process to wait for peer to disappear forever.
 
  
Severity: minor
+
Frequency: rarely
Frequency: always for specific kernels and striping counts
 
Bugzilla: 11042
 
Description: client may get "Matching packet too big" without ACL support
 
Details: Clients compiled without CONFIG_FS_POSIX_ACL get an error message when trying to access files in certain configurations. The clients should in fact be denied when mounting because they do not understand ACLs.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12948 12948]
Frequency: always with random mmap IO to multi-striped file
 
Bugzilla: 10919
 
Description: mmap write might be lost if we are writing to a 'hole' in stripe
 
Details: Only if the hole is at the end of OST object so that kms is too small. Fix is to increase kms accordingly in ll_nopage.  
 
  
Severity: minor
+
Description: buffer overruns could theoretically occur
Frequency: rare
 
Bugzilla: 11040
 
Description: Creating too long symlink causes lustre errors
 
Details: Check symlink and name lengths before sending requests to MDS.
 
  
Severity: minor
+
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.  
Frequency: MDS failover only, very rarely
 
Bugzilla: 11277
 
Description: clients may get ASSERTION(granted_lock != NULL)
 
Details: When request was taking a long time, and a client was resending a getattr by name lock request. The were multiple lock requests with the same client lock handle and mds_getattr_name->fixup_handle_for_resent_request found one of the lock handles but later failed with ASSERTION(granted_lock != NULL).  
 
  
Severity: minor
 
Frequency: depends on hardware
 
Bugzilla: 11540
 
Description: lustre write performance loss in the SLES10 kernel
 
Details: the performance loss is caused by using of write barriers in the ext3 code. The SLES10 kernel turns barrier support on by default. The fix is to undo that change for ldiskfs.
 
  
Severity: normal
+
*Severity: minor
Frequency: when ptlrpc is under heavy use and runs out of request buffer
 
Bugzilla: 11318
 
Description: In lnet_match_blocked_msg(), md can be used without holding a ref on it.
 
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13732 13732]
Frequency: only in configurations with LNET routers
 
Bugzilla: 10316
 
Description: routes automatically marked down and recovered
 
Details: In configurations with LNET routers if a router fails routers now actively try to recover routes that are down, unless they are marked down by an administrator.  
 
  
Severity: normal
+
Description: change order of libsysio includes
Frequency: occasionally with multiple writers to a single file
 
Bugzilla: 11081
 
Description: shared writes to file may result in wrong size reported by stat()
 
Details: Allow growing of kms when extent lock is cancelled
 
  
Severity: normal
+
Details: '#include sysio.h' should always come before '#include xtio.h'
Frequency: rare, only if OST filesystem is inconsistent with MDS filesystem
 
Bugzilla: 11211
 
Description: writes to a missing object would leak memory on the OST
 
Details: If there is an inconsistency between the MDS and OST filesystems, such that the MDS references an object that doesn't exist, writes to that object will leak memory due to incorrect cleanup in the error handling path, eventually running out of memory on the OST.  
 
  
Severity: normal
+
=Changes from v1.6.2 to v1.6.3=
Frequency: only if flock is enabled (not on by default)
+
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
Bugzilla: 11415
 
Description: posix locks not released on fd closure on 2.6.9+
 
Details: We failed to add posix locks to list of inode locks on 2.6.9+ kernels, this caused such locks not to be released on fd close and then assertions on fs unmount about still used locks.  
 
  
Severity: normal
+
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)
Frequency: NFS re-export or patchless client
 
Bugzilla: 11179, 10796
 
Description: Crash on NFS re-export node (__d_move)
 
Details: We do not want to hash the dentry is we don't have a lock. But if this dentry is later used in d_move, we'd hit uninitialised list head d_hash, so we just do this to init d_hash field but leave dentry unhashed.  
 
  
Severity: normal
+
Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org)
Frequency: NFS re-export or patchless client
 
Bugzilla: 11135
 
Description: NFS exports has problem with symbolic link
 
Details: lustre client don`t propertly install dentry when re-exported to nfs or run patchless client.  
 
  
Severity: normal
+
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.  
Frequency: NFS re-export or patchless client
 
Bugzilla: 10796
 
Description: Various nfs/patchless fixes.
 
Details: fixes reuse disconected alias for lookup process - this fixes warning "find_exported_dentry: npd != pd", fix permission error with open files at nfs. fix apply umask when do revalidate.  
 
  
Severity: normal
+
Recommended e2fsprogs version: 1.40.2-cfs1
Frequency: occasional
 
Bugzilla: 11191
 
Description: Crash on NFS re-export node
 
Details: calling clear_page on the wrong pointer triggered oops in generic_mapping_read().
 
  
Severity: normal
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.  
Frequency: rarely, using O_DIRECT IO
 
Bugzilla: 10903
 
Description: unaligned directio crashes client with LASSERT
 
Details: check for unaligned buffers before trying any requests.  
 
  
Changes from v1.4.7.1 to v1.4.8
+
*Severity: enhancement
Support for kernels: 2.6.9-42.0.3EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-47.0.1.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org)
 
Severity: enhancement
 
Bugzilla: 10452
 
Description: Allow recovery/failover for liblustre clients.
 
Details: liblustre clients were unaware of failover configurations until now.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12192 12192]
Bugzilla: 10743
 
Description: user file locks should fail when not mounting with flock option
 
Details: Set up an error-returning stub in ll_file_operations.lock field to prevent incorrect behaviour when client is mounted without flock option. Also, set up properly f_op->flock field for RHEL4 kernels.  
 
  
Severity: enhancement
+
Description: llapi_file_create() does not allow some changes
Bugzilla: 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
+
Details: add llapi_file_open() that allows specifying the file creation mode and open flags, and also returns an open file handle.  
Bugzilla: 10889
 
Description: Checksum enhancements
 
Details: New checksum enhancements allow for resending RPCs that failed checksum checks.  
 
  
Severity: enhancement
 
Bugzilla: 7376
 
Description: Tunables on number of dirty pages in cacche
 
Details: Allow to set limit on number of dirty pages cached.
 
  
Severity: major
+
*Severity: enhancement
Frequency: quota enabled and large files being deleted
 
Bugzilla: 10707
 
Description: releasing more than 4GB of quota at once hangs OST
 
Details: If a user deletes more than 4GB of files on a single OST it will cause the OST to spin in an infinite loop. Release quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12743 12743]
Frequency: rarely (truncate to non-zero file size after write under load)
 
Bugzilla: 10730, 10687
 
Description: Files padded with zeros to next 4K multiple
 
Details: With filesystems mounted using the "extents" option (2.6 kernels) it is possible that files that are truncated to a non-zero size immediately after being written are filled with zero bytes beyond the truncated size. No file data is lost.  
 
  
Severity: major
+
Description: df doesn't work properly if diskfs blocksize != 4K
Frequency: extremely rare except on liblustre-based clients
 
Bugzilla: 10480
 
Description: Lustre space not freed when files are deleted
 
Details: Clean up open-unlinked files after client eviction. Previously the unlink was skipped and the files remained as orphans.
 
  
Severity: major
+
Details: Choose biggest blocksize of OST's as the LOV's blocksize.  
Frequency: always
 
Bugzilla: 11103
 
Description: Broke core dumps to lustre
 
Details: Negative dentry may be unhashed if parent does not have UPDATE lock, but some callers, e.g. do_coredump, expect dentry to be hashed after successful create, hash it in ll_create_it.  
 
  
Severity: minor
 
Frequency: rare
 
Bugzilla: 10845
 
Description: statfs data retrieved from /proc may be stale or zero
 
Details: When reading per-device statfs data from /proc, in the {kbytes,files}_{total,free,avail} files, it may appear as zero or be out of date.
 
  
Severity: minor
+
*Severity: enhancement
Frequency: systems with MD RAID1 external journal devices
 
Bugzilla: 10832
 
Description: lconf's call to blkid is confused by RAID1 journal devices
 
Details: Use the "blkid -l" flag to locate the MD RAID device instead of returning all block devices that match the journal UUID.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11248 11248]
Frequency: always if "lfs find" used on a local file/directory
 
Bugzilla: 10864
 
Description: "lfs find" segfaults if used on a local file/directory
 
Details: The case where a directory component was not specified wasn't handled correctly. Handle this properly.  
 
  
Severity: minor
+
Description: merge and cleanup kernel patches.  
Frequency: always on ia64
 
Bugzilla: 10905
 
Description: "lfs df" loops on printing out MDS statfs information
 
Details: The obd_ioctl_data was not initialized and in some systems this caused a failure during the ioctl that did not return an error. Initialize the struct and return an error on failure.  
 
  
Severity: minor
+
Details: Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.  
Frequency: SLES 9 only
 
Bugzilla: 10667
 
Description: Error of copying files with lustre special EAs as root
 
Details: Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov").  
 
  
Severity: minor
 
Frequency: liblustre clients only
 
Bugzilla: 10883
 
Description: Race in 'instant cancel' lock handling could lead to such locks never to be granted in case of SMP MDS
 
Details: Do not destroy not yet granted but cbpending locks in handle_enqueue
 
  
Severity: minor
+
*Severity: enhancement
Frequency: replay/resend of open
 
Bugzilla: 10991
 
Description: non null lock assetion failure in mds_intent_policy
 
Details: Trying to replay/resend lockless open requests resulted in mds_open() returning 0 with no lock. Now it sets a flag if a lock is going to be returned.
 
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]
Frequency: always, for aggregate stripe size over 4GB
 
Bugzilla: 10725
 
Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
 
Details: Using "lfs setstripe" to set stripe size * stripe count over 4GB will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
 
  
Severity: normal
+
Description: RedHat Update kernel for RHEL5
Frequency: always on ppc64
 
Bugzilla: 10634
 
Description: the write to an ext3 filesystem mounted with mballoc got stuck
 
Details: ext3_mb_generate_buddy() uses find_next_bit() which does not perform endianness conversion.
 
  
Severity: normal
+
Details: Kernel config file for RHEL5.  
Frequency: rarely on clusters with both ia64+i386 clients
 
Bugzilla: 10672
 
Description: ia64+i686 clients doing shared IO on the same file may LBUG
 
Details: In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE) clients are doing concurrent writes to the same file it is possible that the ia64 clients may LASSERT because the OST extent locks are not PAGE_SIZE aligned. Ensure that grown locks are always aligned on the request boundary.  
 
  
Severity: normal
 
Frequency: always
 
Bugzilla: 7040
 
Description: Overwriting in use executable truncates on-disk binary image
 
Details: If one node attempts to overwrite an executable in use by another node, we now correctly return ETXTBSY instead of truncating the file.
 
  
Severity: normal
+
*Severity: enhancement
Frequency: always
 
Bugzilla: 2707
 
Description: chmod on Lustre root is propagated to other clients
 
Details: Re-validate root's dentry in ll_lookup_it to avoid having it invalid by the follow_mount time.
 
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12446 12446]
Frequency: rare
 
Bugzilla: 10643
 
Description: client crash on unmount - lock still has references
 
Details: In some error handling cases it was possible to leak a lock reference on a client while accessing a file. This was not harmful to the client during operation, but would cause the client to crash when the filesystem is unmounted.  
 
  
Severity: normal
+
Description: OSS needs mutliple precreate threads
Frequency: always
 
Bugzilla: 10921
 
Description: ETXTBSY on mds though file not in use by client
 
Details: ETXTBSY is no longer incorrectly returned when attempting to chmod or chown a directory that the user previously tried to execute or a currently-executing binary.
 
  
Severity: normal
+
Details: Add ability to start more than one create thread per OSS.  
Frequency: rare
 
Bugzilla: 10999
 
Description: OST failure "would be an LBUG" in waiting_locks_callback()
 
Details: In some cases it was possible to send a blocking callback to a client doing a glimpse, even though that client didn't get a lock granted. When the glimpse lock is cancelled on the OST the freed lock is left on the waiting list and corrupted the list.  
 
  
Changes from v1.4.7 to v1.4.7.1
 
Support for kernels: 2.6.9-42.0.2.EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-40.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org)
 
bug fix
 
Severity: major
 
Frequency: always on RHEL 3
 
Bugzilla: 10867
 
Description: Number of open files grows over time
 
Details: The number of open files grows over time, whether or not Lustre is started. This was due to a filp leak introduced by one of our kernel patches.
 
  
Changes from v1.4.6 to v1.4.7
+
*Severity: enhancement
Support for kernels: 2.6.9-42.EL (RHEL 4) 2.6.5-7.267 (SLES 9) 2.4.21-40.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org)
 
Severity: enhancement
 
Bugzilla: 3627
 
Description: add TCP zero-copy support to kernel
 
Details: Add support to the kernel TCP stack to allow zero-copy bulk sends if the hardware supports scatter-gather and checksumming. This allows socklnd to do client-write and server-read more efficiently and reduce CPU utilization from skbuf copying.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13039 13039]
Bugzilla: 9340
 
Description: allow number of MDS service threads to be changed at module load
 
Details: It is now possible to change the number of MDS service threads running. Adding "options mds mds_num_threads={N}" to the MDS's /etc/modprobe.conf will set the number of threads for the next time Lustre is restarted (assuming the "mds" module is also reloaded at that time). The default number of threads will stay the same, 32 for most systems.  
 
  
Severity: enhancement
+
Description: RedHat Update kernel for RHEL5
Bugzilla: 10193 (patchless)
 
Description: Remove dependency on various unexported kernel interfaces.
 
Details: No longer need reparent_to_init, exit_mm, exit_files, sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
 
  
Severity: enhancement
+
Details: Modify the kernel config file more closer RHEL5.  
Bugzilla: 10420
 
Description: Support NFS exporting on 2.6 kernels.
 
Details: Implement non-rawops metadata methods for NFS server to use without changing NFS server code.  
 
  
Severity: enhancement
 
Bugzilla: 9293, 9385
 
Description: MDS RPCs are serialised on client. This is unnecessary for some.
 
Details: Do not serialize getattr (non-intent version) and statfs.
 
  
Severity: Enhancement
+
*Severity: enhancement
Bugzilla: 10482
 
Description: Cache open file handles on client.
 
Details: MDS now will return special lock along with openhandle, if requested and client is allowed to hold openhandle, even if unused, until such a lock is revoked. Helps NFS a lot, since NFS is opening closing files for every read/write openration.
 
  
Severity: Enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13360 13360]
Bugzilla: 9291
 
Description: Cache open negative dentries on client when possible.
 
Details: Guard negative dentries with UPDATE lock on parent dir, drop negative dentries on lock revocation.  
 
  
Severity: enhancement
+
Description: Build failure against Centos5 (RHEL5)
Description: Include MPICH 1.2.6 Lustre ADIO interface patch
 
Details: In lustre/contrib/ or /usr/share/lustre in RPM a patch for MPICH is included to add Lustre-specific ADIO interfaces. This is based closely on the UFS ADIO layer and only differs in file creation, in order to allow the OST striping to be set. This is user-contributed code and not supported by CFS.
 
  
Severity: enhancement
+
Details: Define PAGE_SIZE when it isn't present.  
Frequency: Always
 
Bugzilla: 10248
 
Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
 
Details: Many of the /proc/ tunables can only be tuned at a megabyte granularity. Now, Fractional MB granularity is be supported, this is very useful for low memory system.  
 
  
Severity: enhancement
 
Bugzilla: 9292
 
Description: Getattr by fid
 
Details: Getting a file attributes by its fid, obtaining UPDATE|LOOKUP locks, avoids extra getattr rpc requests to MDS, allows '/' to have locks and avoids getattr rpc requests for it on every stat.
 
  
Severity: enhancement
+
*Severity: enhancement
Bugzilla: 10462
 
Description: add client O_DIRECT support for 2.6 kernels
 
Details: It is now possible to do O_DIRECT reads and writes to files in the Lustre client mountpoint on 2.6 kernel clients.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11401 11401]
Bugzilla: 10446
 
Description: parallel glimpse, setattr, statfs, punch, destroy requests
 
Details: Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in parallel, not waiting for response from every OST before sending a rpc to the next OST.  
 
  
Severity: enhancement
+
Description: client-side metadata stat-ahead during readdir(directory readahead)
Bugzilla: 10318
 
Description: Bring 'lfs find' closer in line with regular Linux find.
 
Details: lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print, -print0 options and obtains all the needed info through the lustre ioctls.
 
  
Severity: enhancement
+
Details: perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein
Bugzilla: 6221
 
Description: support up to 1024 configured devices on one node
 
Details: change obd_dev array from statically allocated to dynamically allocated structs as they are first used to reduce memory usage
 
  
Severity: enhancement
 
Bugzilla: 2259
 
Description: clear OBD RPC statistics by writing to them
 
Details: It is now possible to clear the OBD RPC statistics by writing to the "stats" file.
 
  
Severity: critical
+
*Severity: enhancement
Frequency: Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
 
Bugzilla: 6191
 
Description: filesystem corruption for non-standard kernels and very large OSTs
 
Details: If a 32-bit kernel is compiled without CONFIG_LBD enabled and a filesystems larger than 2TB is mounted then the kernel will silently corrupt the start of the filesystem. CONFIG_LBD is enabled for all CFS-supported kernels, but the possibility of this happening with a modified kernel config exists.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=11230 11230]
Frequency: rare
 
Bugzilla: 5719, 9635, 9792, 9684
 
Description: OST (or MDS) trips assertions in (re)connection under heavy load
 
Details: If a server is under heavy load and cannot reply to new connection requests before the client resends the (re)connect, the connection handling code can behave badly if two service threads are concurrently handing separate (re)connections from the same client. Add better locking to the connection handling code, and ensure that only a single connection will be processed for a given client UUID, even if the lock is dropped.  
 
  
Severity: major
+
Description: Tune the kernel for good SCSI performance.  
Frequency: rare
 
Bugzilla: 9326, 10402, 10897
 
Description: client crash in ptlrpcd_wake() thread when sending async RPC
 
Details: It is possible that ptlrpcd_wake() dereferences a freed async RPC. In rare cases the ptlrpcd thread alread processed the RPC before ptlrpcd_wake() was called and the request was freed.  
 
  
Severity: major
+
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.  
Frequency: rare
 
Bugzilla: 10300
 
Description: OST crash if filesystem is unformatted or corrupt
 
Details: If an OST is started on a device that has never been formatted or if the filesystem is corrupt and cannot even mount then the error handling cleanup routines would dereference a NULL pointer.  
 
  
Severity: major
 
Frequency: rare (only with non-default dump_on_timeout debug enabled)
 
Bugzilla: 10397
 
Description: waiting_locks_callback trips kernel BUG if client is evicted
 
Details: Running with the dump_on_timeout debug flag turned on makes it possible that the waiting_locks_callback() can try to dump the Lustre kernel debug logs from an interrupt handler. Defer this log dumping to the expired_lock_main() thread.
 
  
Severity: major
+
*Severity: critical
Frequency: only very large systems with liblustre clients
 
Bugzilla: 7304
 
Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
 
Details: Use asynchronous set_info RPCs to send the "evict_by_nid" to all OSTs in parallel. This allows the eviction of stale liblustre clients to proceed much faster than if they were done in series, and also offers similar improvements for other set_info RPCs.
 
  
Severity: major
+
Frequency: Always for filesystems larger than 2TB on 32-bit systems.
Frequency: Always, for filesystems larger than 2TB
 
Bugzilla: 6191
 
Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
 
Details: Kenrel kmalloc limits allocations to 128kB and this prevents filesystems larger than 2TB to be mounted with mballoc enabled.  
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13547 13547] , [https://bugzilla.lustre.org/show_bug.cgi?id=13627 13627]
Frequency: during server recovery
 
Bugzilla: 10479
 
Description: crash after server is denying duplicate export
 
Details: If clients are resending connect requests to the server, the server refuses to allow a client to connect multiple times. Fixed a bug in the handling of this case.  
 
  
Severity: minor
+
Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers.  
Frequency: only if NFS exporting from client
 
Bugzilla: 10258
 
Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
 
Details: If setting attributes on a file created under NFS that had never been opened it would be possible to oops the client if the file had no objects.  
 
  
Severity: minor
+
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.  
Frequency: always for liblustre
 
Bugzilla: 10290
 
Description: liblustre client does MDS+OSTs setattr RPC for each write
 
Details: When doing a write from a liblustre client, the client incorrectly issued an RPC to the MDS and each OST the file was striped over in order to update the timestamps. When writing with small chunks and many clients this could overwhelm the MDS with RPCs. In all cases it would slow down the write because these RPCs are unnecessary.  
 
  
Severity: minor
 
Frequency: Sometimes when using sys_sendfile
 
Bugzilla: 7020
 
Description: "page not covered by a lock" warnings from ll_readpage
 
Details: sendfile called ll_readpage without right page locks present. Now we introduced ll_file_sendfile that does necessary locking around call to generic_file_sendfile() much like we do in ll_file_read().
 
  
Severity: minor
+
*Severity: major
Frequency: rare (only users of deprecated and unsupported LDAP config)
 
Bugzilla: 9337
 
Description: write_conf for zeroconf mount queried LDAP incorrectly for client
 
Details: LDAP apparently contains 'lustreName' attributes instead of 'name'. A simple remapping of the name is sufficient.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13236 13236]
Frequency: common
 
Bugzilla: 10265
 
Description: excessive CPU usage during initial read phase on client
 
Details: During the initial read phase on a client, it would agressively retry readahead on the file, consuming too much CPU and impacting performance (since 1.4.5.8). Improve the readahead algorithm to avoid this, and also improve some other common cases (read of small files in particular, where "small" is files smaller than /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).  
 
  
Severity: minor
+
Description: TOE Kernel panic by ksocklnd
Frequency: rare
 
Bugzilla: 10450
 
Description: MDS crash when receiving packet with unknown intent.
 
Details: Do not LBUG in unknown intent case, just return -EFAULT
 
  
Severity: minor
+
Details: offloaded sockets provide their own implementation of sendpage, can't call tcp_sendpage() directly
Frequency: occasional, when OST network is overloaded/intermittent
 
Bugzilla: 10416
 
Description: client evicted by OST after bulk IO timeout
 
Details: If a client sends a bulk IO request (read or write) the OST may evict the client if it is unresposive to its data GET/PUT request. This is incorrect if the network is overloaded (takes too long to transfer the RPC data) or dropped the OST GET/PUT request. There is no need to evict the client at all, since the pinger and/or lock callbacks will handle this, and the client can restart the bulk request.
 
  
Severity: minor
 
Frequency: Always when mmapping file with no objects
 
Bugzilla: 10438
 
Description: client crashes when mmapping file with no objects
 
Details: Check that we actually have objects in a file before doing any operations on objects in ll_vm_open, ll_vm_close and ll_glimpse_size.
 
  
Severity: minor
+
*Severity: major
Frequency: Rare
 
Bugzilla: 10484
 
Description: Request leak when working with deleted CWD
 
Details: Introduce advanced request refcount tracking for requests referenced from lustre intent.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13482 13482]
Frequency: Always
 
Bugzilla: 10510
 
Description: Remounting a client read-only wasn't possible with a zconf mount
 
Details: It wasn't possible to remount a client read-only with llmount.  
 
  
Severity: minor
+
Description: build error
Frequency: Always
 
Bugzilla: 9486
 
Description: extended inode attributes (immutable, append-only) work improperly when 2.4 and 2.6 kernels are used on client/server or vice versa
 
Details: Introduce kernel-independent values for these flags.
 
  
Severity: minor
+
Details: fix typos in gmlnd, ptllnd and viblnd
Frequency: rare
 
Bugzilla: 10150
 
Description: setattr vs write race when updating file timestamps
 
Details: Client processes that update a file timestamp into the past right after writing to the file (e.g. tar) it is possible that the updated file modification time can be reset to the current time due to a race between processing the setattr and write RPC.
 
  
Severity: minor
 
Frequency: rare
 
Bugzilla: 10437
 
Description: Flush dirty partially truncated pages during truncate
 
Details: Immediatelly flush partially truncated pages in filter_setattr, this way we completely avoid having any pages in page cache on OST and can retire ugly workarounds during writes to flush such pages.
 
  
Severity: minor
+
*Severity: major
Frequency: rare
 
Bugzilla: 10409
 
Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
 
Details: protect inode from truncation within vfs_unlink() context just take a reference before calling vfs_unlink() and release it when parent's i_sem is free.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12932 12932]
Frequency: always, if extents are used on OSTs
 
Bugzilla: 10703
 
Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
 
Details: OSTs using the extents format would not zero the high 16 bits of the index physical block number. This is not a problem for any OST filesystems smaller than 16TB, and no kernels support ext3 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all new/modified files) and can be fixed for existing filesystems with e2fsprogs-1.39-cfs1.  
 
  
Severity: minor
+
Description: obd_health_check_timeout too short
Frequency: rare
 
Bugzilla: 9387
 
Description: import connection selection may be incorrect if timer wraps
 
Details: Using a 32-bit jiffies timer with HZ=1000 may cause backup import connections to be ignored if the 32-bit jiffies counter wraps. Use a 64-bit jiffies counter.
 
  
Severity: minor
+
Details: set obd_health_check_timeout as 1.5x of obd_timeout
Frequency: very large clusters immediately after boot
 
Bugzilla: 10083
 
Description: LNET request buffers exhausted under heavy short-term load
 
Details: If a large number of client requests are generated on a service that has previously never seen so many requests it is possible that the request buffer growth cannot keep up with the spike in demand. Instead of dropping incoming requests, they are held in the LND until the RPC service can accept more requests.
 
  
Severity: minor
 
Frequency: Sometimes during replay
 
Bugzilla: 9314
 
Description: Assertion failure in ll_local_open after replay.
 
Details: If replay happened on an open request reply before we were able to set replay handler, reply will become not swabbed tripping the assertion in ll_local_open. Now we set the handler right after recognising of open request
 
  
Severity: minor
+
*Severity: major
Frequency: very rare
 
Bugzilla: 10584
 
Description: kernel reports "badness in vsnprintf"
 
Details: Reading from the "recovery_status" /proc file in small chunks may cause a negative length in lprocfs_obd_rd_recovery_status() call to vsnprintf() (which is otherwise harmless). Exit early if there is no more space in the output buffer.
 
  
Severity: minor
+
Frequency: only with quota on the root user
Frequency: rare
 
Bugzilla: 10641
 
Description: Client mtime is not the same on different clients after utimes
 
Details: In some cases, the client was using the utimes() syscall on a file cached on another node. The clients now validate the ctime from the MDS + OSTs to determine which one is right.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12223 12223]
Frequency: always
 
Bugzilla: 10611
 
Description: Inability to activate failout mode
 
Details: lconf script incorrectly assumed that in pythong string's numeric value is used in comparisons.  
 
  
Severity: minor
+
Description: mds_obd_create error creating tmp object  
Frequency: always with multiple stripes per file
 
Bugzilla: 10671
 
Description: Inefficient object allocation for mutli-stripe files
 
Details: When selecting which OSTs to stripe files over, for files with a stripe count that divides evenly into the number of OSTs, the MDS is always picking the same starting OST for each file. Return the OST selection heuristic to the original design.
 
  
Severity: minor
+
Details: When the user sets quota on root, llog will be affected and can't create files and write files.  
Frequency: rare
 
Bugzilla: 10673
 
Description: mount failures may take full timeout to return an error
 
Details: Under some heavy load conditions it is possible that a failed mount can wait for the full obd_timeout interval, possibly several minutes, before reporting an error. Instead return an error as soon as the status is known.  
 
  
Severity: normal
 
Frequency: rare
 
Bugzilla: 10047
 
Description: NULL pointer deref in llap_from_page.
 
Details: get_cache_page_nowait can return a page with NULL (or otherwise incorrect) mapping if the page was truncated/reclaimed while it was searched for. Check for this condition and skip such pages when doing readahead. Introduce extra check to llap_from_page() to verify page->mapping->host is non-NULL (so page is not anonymous).
 
  
Severity: normal
+
*Severity: normal
Frequency: with certain MDS communication failures at client mount time
 
Bugzilla: 10268
 
Description: NULL pointer deref after failed client mount
 
Details: a client connection request may delayed by the network layer and not be sent until after the PTLRPC layer has timed out the request. If the client fails the mount immediately it will try to clean up before the network times out the request. Add a reference from the request import to the obd device and delay the cleanup until the network drops the request.
 
  
Severity: normal
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12782 12782]
Frequency: occasionally during client (re)connect
 
Bugzilla: 9387
 
Description: assertion failure during client (re)connect
 
Details: processing a client connection request may be delayed by the client or server longer than the client connect timeout. This causes the client to resend the connection request. If the original connection request is replied in this interval, the client may trip an assertion failure in ptlrpc_connect_interpret() which thought it would be the only running connect process.  
 
  
Severity: normal
+
Description: /proc/sys/lnet has non-sysctl entries
Frequency: only with obd_echo servers and clients that are rebooted
 
Bugzilla: 10140
 
Description: kernel BUG accessing uninitialized data structure
 
Details: When running an obd_echo server it did not start the ping_evictor thread, and when a client was evicted an uninitialized data structure was accessed. Start the ping_evictor in the RPC service startup instead of the OBD startup.
 
  
Severity: normal
+
Details: Updating dump_kernel/daemon_file/debug_mb to use sysctl variables
Frequency: very rare (synthetic metadata workload only)
 
Bugzilla: 9974
 
Description: two racing renames might cause an MDS thread to deadlock
 
Details: Running the "racer" program may cause one MDS thread to rename a file from being the source of a rename to being the target of a rename at exactly the same time that another thread is doing so, and the second thread has already enqueued these locks after doing a lookup of the target and is trying to relock them in order. Ensure that we don't try to re-lock the same resource.
 
  
Changes from v1.4.5 to v1.4.6
 
WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT INTEROPERATE with older versions automatically. Please read the user documentation before upgrading any part of a live system.
 
WARNING: Lustre networking configuration changes are required with this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052 for details.
 
Support for kernels: 2.6.9-22.0.2.EL (RHEL 4) 2.6.5-7.244 (SLES 9) 2.6.12.6 vanilla (kernel.org)
 
Severity: enhancement
 
Bugzilla: 7981/8208
 
Description: Introduced Lustre Networking (LNET)
 
Details: LNET is new networking infrastructure for Lustre, it includes a reorganized network configuration mode (see the user documentation for full details) as well as support for routing between different network fabrics. Lustre Networking Devices (LNDs) for the supported network fabrics have also been created for this new infrastructure.
 
  
Severity: enhancement
+
*Severity: normal
Description: Introduced Access control lists
 
Details: clients can set ACLs on files and directories in order to have more fine-grained permissions than the standard Unix UGO+RWX. The MDS must be started with the "-o acl" mount option.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=10778 10778]
Description: Introduced filesystem quotas
 
Details: Administrators may now establish per-user quotas on the filesystem.  
 
  
Severity: enhancement
+
Description: kibnal_shutdown() doesn't finish; lconf --cleanup hangs
Bugzilla: 7982
 
Description: Configuration change for the XT3 The PTLLND is now used to run Lustre over Portals on the XT3 The configure option(s) --with-cray-portals are no longer used. Rather --with-portals=<path-to-portals-includes> is used to enable building on the XT3. In addition to enable XT3 specific features the option --enable-cray-xt3 must be used.
 
  
Severity: enhancement
+
Details: races between lnd_shutdown and peer creation prevent lnd_shutdown from finishing.  
Bugzilla: 7116
 
Description: 2.6 OST async journal commit and locking fix to improve performance
 
Details: The filter_direct_io()+filter_commitrw_write() journal commits for 2.6 kernels are now async as they already were in 2.4 kernels so that they can commit concurrently with the network bulk transfer. For block-allocated files the filter allocation semaphore is held to avoid filesystem fragmentation during allocation. BKL lock removed for 2.6 xattr operations where it is no longer needed.  
 
  
Severity: enhancement
 
Bugzilla: 7328
 
Description: specifying an (invalid) directory default stripe_size of -1 would reset the directory default striping
 
Details: stripe_size -1 was used internally to signal directory stripe removal, now use "all default" to signal dir stripe removal as a directory striping of "all default" is not useful
 
  
Severity: enhancement
+
*Severity: normal
Bugzilla: 7198
 
Description: doing an ls at the same time as file IO can be slow
 
Details: enqueue and other "small" requests can be blocked behind many large IO requests. Create a new OST IO portal for non-IO requests so they can be processed faster.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13279 13279]
Bugzilla: 6252
 
Description: Improve read-ahead algorithm to avoid excessive IO for random reads
 
Details: Existing read-ahead algorithm is tuned for the case of streamlined sequential reads and behaves badly with applications doing random reads. Improve it by reading ahead at least read region, and avoiding excessive large RPC for small reads.  
 
  
Severity: enhancement
+
Description: open files rlimit 1024 reached while liblustre testing
Bugzilla: 8330
 
Description: Creating more than 1000 files for a single job may cause a load imbalance on the OSTs if there are also a large number of OSTs.
 
Details: qos_prep_create() uses an OST index reseed value that is an even multiple of the number of available OSTs so that if the reseed happens in the middle of the object allocation it will still utilize the OSTs as uniformly as possible.
 
  
Severity: enhancement
+
Details: ulnds/socklnd must close open socket after unsuccessful 'say hello' attempt.  
Bugzilla: 7304
 
Description: improve by-nid export eviction on the MDS and OST
 
Details: allow multiple exports with the same NID to be evicted at one time without re-searching the exports list.  
 
  
Severity: enhancement
 
Bugzilla: 7342
 
Description: bind OST threads to NUMA nodes to improve performance
 
Details: all OST threads are uniformly bound to CPUs on a single NUMA node and do their allocations there to localize memory access
 
  
Severity: enhancement
+
*Severity: normal
Bugzilla: 7979
 
Description: llmount can determine client NID directly from Myrinet (GM)
 
Details: the client NID code from gmnalnid was moved directly into llmount, removing the need to use this or specifying the client NID explicitly when mounting GM clients with zeroconf
 
  
Severity: enhancement
+
Frequency: always on directories with default striping set
Bugzilla: 9445
 
Description: remove cleanup logs
 
Details: replace lconf-generated cleanup logs with lustre internal cleanup routines. Eliminates the need for client-cleanup and mds-cleanup logs.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12836 12836]
Bugzilla: 8592
 
Description: add support for EAs (user and system) on lustre filesystems
 
Details: it is now possible to store extended attributes in the Lustre client filesystem, and with the user_xattr mount option it is possible to allow users to store EAs on their files also
 
  
Severity: enhancement
+
Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()  
Bugzilla: 7293
 
Description: Add possibility (config option) to show minimal available OST free space.
 
Details: When compiled with --enable-mindf configure option, statfs(2) (and so, df) will return least minimal free space available from all OSTs as amount of free space on FS, instead of summary of free spaces of all OSTs.
 
  
Severity: enhancement
+
Details: Avoid lov_verify_lmm_common() on directory with -1 stripe count.  
Bugzilla: 7311
 
Description: do not expand extent locks acquired on OST-side
 
Details: Modify ldlm_extent_policy() to not expand local locks, acquired by server: they are not cached anyway.  
 
  
Severity: enhancement
 
Frequency: if MDS is started with down OST
 
Bugzilla: 9439,5706
 
Description: Allow startup/shutdown of an MDS without depending on the availability of the OSTs.
 
Details: Asynchronously call mds_lov_synchronize during MDS startup. Add appropriate locking and lov-osc refcounts for safe cleaning. Add osc abort_inflight calls in case the synchronize never started.
 
  
Severity: enhancement
+
*Severity: normal
Bugzilla: 7417
 
Description: Ability to exchange lustre version between client and servers and issue warnings at client side if client is too old. Also for liblustre clients there is ability to refuse connection of too old clients.
 
Details: New 'version' field is added to connect data structure that is filled with version info. That info is later checked by server and by client.
 
  
Severity: enhancement
+
Frequency: Always on ia64 patchless client, and possibly others.
Bugzilla: 9528
+
 
Description: allow liblustre clients to delegate truncate locking to OST
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12826 12826]
Details: To avoid overhead of locking, liblustre client instructs OST to take extent lock in ost_punch() on client's behalf. New connection flag is added to handle backward compatibility.  
 
  
Severity: enhancement
+
Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.  
Bugzilla: 4928, 7341, 9758
 
Description: allow number of OST service threads to be specified
 
Details: a module parameter allows the number of OST service threads to be specified via "options ost ost_num_threads={N}" in the OSS's /etc/modules.conf or /etc/modprobe.conf.  
 
  
Severity: enhancement
+
Details: This allows the patchless client to be loaded on architectures without this export.  
Frequency: if client is started with failover MDS
 
Bugzilla: 9818
 
Description: Allow multiple MDS hostnames in the mount command
 
Details: Try to read the configuration from all specified MDS hostnames during a client mount in case the "primary" MDS is down.  
 
  
Severity: enhancement
 
Bugzilla: 9297
 
Description: Stop sending data to evicted clients as soon as possible.
 
Details: Check if the client we are about to send or are sending data to was evicted already. (Check is done every second of waiting, for which l_wait_event interface was extended to allow checking of exit condition at specified intervals).
 
  
Severity: enhancement
+
*Severity: normal
Bugzilla: 9477, 9557, 9870
 
Description: Verify that the MDS configuration logs are updated when xml is
 
Details: Check if the .xml configuration logs are newer than the config logs stored on the MDS and report an error if this is the case. Request --write-conf, or allow starting with --old_conf.
 
  
Severity: enhancement
+
Frequency: rare
Bugzilla: 6034
 
Description: Handle symlinks in the path when checking if Lustre is mounted.
 
Details: Resolve intermediate symlinks when checking if a client has mounted a filesystem to avoid duplicate client mounts.
 
  
Severity: enhancement
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13142 13142]
Bugzilla: 9578
 
Description: Support for specifying external journal device at mount
 
Details: If an OST or MDS device is formatted with an external journal device, this device major/minor is stored in the ext3 superblock and may not be valid for failover. Allow detecting and specifying the external journal at mount time.  
 
  
Severity: enhancement
+
Description: disorder of journal start and llog_add cause deadlock.  
Bugzilla: 9461
 
Description: Implement 'lfs df' to report actual free space on per-OST basis
 
Details: Add sub-command 'df' on 'lfs' to report the disk space usage of MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report usage of objects; '-h' to report in human readable format.  
 
  
Severity: major
+
Details: in llog_origin_connect, journal start should happen before llog_add keep the same order as other functions to avoid the deadlock.  
Frequency: rare
 
Bugzilla: 7407
 
Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
 
Details: A race between allocating a new llcd and re-getting the llcd_lock allowed another thread to grab newly-allocated llcd.  
 
  
Severity: major
 
Frequency: rare
 
Bugzilla: 7359
 
Description: Fix for potential infinite loop processing records in an llog.
 
Details: If an llog record is corrupted/zeroed, it is possible to loop forever in llog_process(). Validate the llog record length and skip the remainder of the block on error.
 
  
Severity: major
+
*Severity: normal
Frequency: rare
 
Bugzilla: 8322
 
Description: OST or MDS may oops in ping_evictor_main()
 
Details: ping_evictor_main() drops obd_dev_lock if deleting a stale export but doesn't restart at beginning of obd_exports_timed list afterward.
 
  
Severity: major
+
Frequency: occasionally when using NFS
Frequency: rare, only with supplementary groups enabled on SMP 2.6 kernels
 
Bugzilla: 7273
 
Description: MDS may oops in groups_free()
 
Details: in rare race conditions a newly allocated group_info struct is freed again, and this can be NULL. The 2.4 compatibility code for groups_free() checked for a NULL pointer, but 2.6 did not.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13030 13030]
Frequency: rare
 
Bugzilla: 5047
 
Description: data loss during non-page-aligned writes to a single file from both multiple nodes and multiple threads on one node at same time
 
Details: updates to KMS and lsm weren't protected by common lock. Resulting inconsistency led to false short-reads, that were cached and later used by ->prepare_write() to fill in partially written page, leading to data loss.  
 
  
Severity: major
+
Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
Frequency: when mmap is used/binaries executed from Lustre
 
Bugzilla: 9482
 
Description: Unmmap pages before throwing them away from read cache.
 
Details: llap_shrink cache now attempts to unmap pages before discarding them (if unmapping failed - do not discard). SLES9 kernel has extra checks that trigger if this unmapping is not done first.
 
  
Severity: major
+
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.  
Frequency: rare
 
Bugzilla: 6146, 9635, 9895
 
Description: servers crash with bad pointer in target_handle_connect()
 
Details: In rare cases when a client is reconnecting it was possible that the connection request was the last reference for that export. We would temporarily drop the export reference and get a new one, but this may have been the last reference and the export was just destroyed. Get new reference before dropping old one.  
 
  
Severity: major
 
Frequency: rare, unless heavy write-truncate concurrency is continuous
 
Bugzilla: 4180, 6984, 7171, 9963, 9331
 
Description: OST becomes very slow and/or deadlocked during object unlink
 
Details: filter_destroy() was holding onto the parent directory lock while truncating+unlinking objects. For very large objects this may block other threads for a long time and slow overall OST responsiveness. It may also be possible to get a lock ordering deadlock in this case, or run out of journal credits because of the combined truncate+unlink. Solution is to do object truncate first in one transaction without parent lock, and then do the final unlink in a new transaction with the parent lock. This reduces the lock hold time dramatically.
 
  
Severity: major
+
*Severity: normal
Frequency: rare, 2.4 kernels only
 
Bugzilla: 9967
 
Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
 
Details: mds_cleanup() and filter_cleanup() need to drop the kernel lock before unmounting their filesystem in order to avoid deadlock. The kernel_locked() function in 2.4 kernels only checks whether the kernel lock is held, not whether it is this process that is holding it as 2.6 kernels do.
 
  
Severity: major
+
Frequency: Occasionally with failover
Frequency: rare
 
Bugzilla: 9635
 
Description: MDS or OST may oops/LBUG if a client is connecting multiple times
 
Details: The client ptlrpc code may be trying to reconnect to a down server before a previous connection attempt has timed out. Increase the reconnect interval to be longer than the connection timeout interval to avoid sending duplicate connections to servers.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12459 12459]
Frequency: rare, 2.6 OSTs only
 
Bugzilla: 10076
 
Description: OST may deadlock under high load on fragmented files
 
Details: If there was a heavy load and highly-fragmented OST filesystems it was possible to have all the OST threads deadlock waiting on allocation of biovecs, because the biovecs were not released until the entire RPC IO was completed. Instead, release biovecs as soon as they are complete to ensure forward IO progress.  
 
  
Severity: major
+
Description: Client eviction due to failover config
Frequency: rare
 
Bugzilla: 10235
 
Description: Mounting an MDS with pending unlinked files may cause oops
 
Details: target_finish_recovery() calls mds_postrecov() which returned the number of orphans unlinked. mds_lov_connect->mds_postsetup() considers this an error and immediately begins cleaning up the lov, just after starting the mds_lov process
 
  
Severity: minor
+
Details: after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections.  
Frequency: rare
 
Bugzilla: 8320
 
Description: lconf incorrectly determined whether two IP networks could talk
 
Details: In some more complicated routing and multiple-network configurations, lconf will avoid trying to make a network connection to a disjoint part of the IP space. It was doing the math incorrectly for one set of cases.  
 
  
Severity: minor
 
Frequency: occasional (liblustre only)
 
Bugzilla: 6363
 
Description: liblustre could not open files whose last component is a symlink
 
Details: sysio_path_walk() would incorrectly pass the open intent to intermediate path components.
 
  
Severity: minor
+
*Severity: normal
Frequency: rare (liblustre only with non-standard tuning)
 
Bugzilla: 7201 (7350)
 
Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
 
Details: llu_lookup_finish_locks() tries to set lock data on a lock after it has been released, only do this for referenced locks
 
  
Severity: minor
+
Frequency: only with liblustre clients on XT3
Frequency: common for large clusters running liblustre clients
 
Bugzilla: 7198
 
Description: doing an ls when liblustre clients are running is slow
 
Details: sending a glimpse AST to a liblustre client waits for every AST to time out, as liblustre clients will not respond. Since they cannot cache data we refresh the OST lock LVB from disk instead.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12418 12418]
Frequency: rare (only HPUX clients mounting unsupported re-exported NFS vol)
 
Bugzilla: 5781
 
Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly created file with mode 000
 
Details: the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to allow an ftruncate() as a non-root user to a file with mode 000. Lustre now respects this flag to disable mode checks when truncating a file owned by the user
 
  
Severity: minor
+
Description: evictions taking too long
Frequency: liblustre-only, when liblustre client dies unexpectedly or becomes busy
 
Bugzilla: 7313
 
Description: Revoking locks from clients that went dead or catatonic might take a lot of time.
 
Details: New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes cancellation of such locks instant on servers without waiting for any reply from clients. Clients drops these locks when cancel notification from server is received without replying.
 
  
Severity: minor
+
Details: allow llrd to evict clients directly on OSTs
Frequency: liblustre-only, when liblustre client dies or becomes busy
 
Bugzilla: 7311
 
Description: Doing ls on Linux clients can take a long time with active liblustre clients
 
Details: Liblustre client cannot handle ASTs in timely manner, so avoid granting such locks to it in the first place if possible. Locks are taken by proxy on the OST during the read or write and dropped immediately afterward. Add connect flags handling, do not grant locks to liblustre clients for glimpse ASTs.
 
  
Severity: minor
 
Frequency: common for liblustre clients doing little filesystem IO
 
Bugzilla: 9352, 7313
 
Description: server may evict liblustre clients accessing contended locks
 
Details: if a client is granted a lock or receives a completion AST with a blocking AST already set it would not reply to the AST for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
 
  
Severity: minor
+
*Severity: normal
Frequency: lfs setstripe, only systems with more than 160 OSTs
 
Bugzilla: 9440
 
Description: unable to set striping with a starting offset beyond OST 160
 
Details: llapi_create_file() incorrectly limited the starting stripe index to the maximum single-file stripe count.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13125 13125]
Frequency: LDAP users only
 
Bugzilla: 6163
 
Description: lconf did not handle in-kernel recovery with LDAP properly
 
Details: lconf/LustreDB get_refs() is searching the wrong namespace
 
  
Severity: minor
+
Description: osts not allocated evenly to files
Frequency: if client is started with down MDS
 
Bugzilla: 7184
 
Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
 
Details: Having an LWI_INTR() wait event (interruptible, but no timeout) will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after ptlrpc_import_delayed_req() because we didn't check if the request was interrupted, and we also didn't break out of the event loop if there was no timeout
 
  
Severity: minor
+
Details: change the condition to increase offset_idx
Frequency: always, if lconf --abort_recovery used
 
Bugzilla: 7047
 
Description: lconf --abort_recovery fails with 'Operation not supported'
 
Details: lconf was attempting to abort recovery on the MDT device and not the MDS device
 
  
Severity: minor
 
Frequency: rare
 
Bugzilla: 6034
 
Description: lconf didn't resolve symlinks before checking to see whether a given mountpoint was already in use
 
  
Severity: minor
+
*Severity: normal
Frequency: when migrating failover services
 
Bugzilla: 6395, 9514
 
Description: When migrating a subset of services from a node (e.g. failback from a failover service node) the remaining services would time out and evict clients.
 
Details: lconf --force (implied by --failover) sets the global obd_timeout to 5 seconds in order to quickly disconnect, but this caused other RPCs to time out too quickly. Do not change the global obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13436 13436]
Frequency: occasional (Cray XT3 only)
 
Bugzilla: 7305
 
Description: root not authorized to access files in CRAY_PORTALS environment
 
Details: The client process capabilities were not honoured on the MDS in a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously been accessed by an authorized user then root was able to access the file on the local client also. The root user capabilities are now allowed on the MDS, as this environment has secure UID.  
 
  
Severity: minor
+
Description: Only those disconnect error should be returned by rq_status.  
Frequency: occasional
 
Bugzilla: 6449
 
Description: ldiskfs "too long searching" message happens too often
 
Details: A debugging message (otherwise harmless) prints too often on the OST console. This has been reduced to only happen when there are fragmentation problems on the filesystem.  
 
  
Severity: minor
+
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.  
Frequency: rare
 
Bugzilla: 9598
 
Description: Division by zero in statfs when all OSCs are inactive
 
Details: lov_get_stripecnt() returns zero due to incorrect order of checks, lov_statfs divides by value returned by lov_get_stripecnt().  
 
  
Severity: minor
 
Frequency: common
 
Bugzilla: 9489, 3273
 
Description: First write from each client to each OST was only 4kB in size, to initialize client writeback cache, which caused sub-optimal RPCs and poor layout on disk for the first writen file.
 
Details: Clients now request an initial cache grant at (re)connect time and so that they can start streaming writes to the cache right away and always do full-sized RPCs if there is enough data. If the OST is rebooted the client also re-establishes its grant so that client cached writes will be honoured under the grant.
 
  
Severity: minor
+
*Severity: normal
Frequency: common
 
Bugzilla: 7198
 
Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
 
Details: Now I/O RPCs go to different portal number and (presumably) fast lock requests (and glimses) and other RPCs get their own service threads pool that should be able to service those RPCs immediatelly.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13600 13600]
Frequency: rare, liblustre only.
 
Bugzilla: 9296, 9581
 
Description: Two simultaneous writes from liblustre at offset within same page might proceed at the same time overwriting eachother with stale data.
 
Details: I/O lock withing llu_file_prwv was released too early, before data actually was hitting the wire. Extended lock-holding time until server acknowledges receiving data.  
 
  
Severity: minor
+
Description: "lfs find -obd UUID" prints directories
Frequency: extremely rare. Never observed in practice.
 
Bugzilla: 9652
 
Description: avoid generating lustre_handle cookie of 0.
 
Details: class_handle_hash() generates handle cookies by incrementing global counter, and can hit 0 occasionaly (this is unlikely, but not impossible, because initial value of cookie counter is selected randonly). Value of 0 is used as a sentinel meaning "unassigned handle" --- avoid it. Also coalesce two critical sections in this function into one.
 
  
Severity: minor
+
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.  
Frequency: rare, normally only when NFS exporting is done from client
 
Bugzilla: 9301
 
Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files without objects
 
Details: Make mds_get_md() recognise empty md case and set lmm size to 0.  
 
  
Severity: minor
 
Frequency: always, if srand() is called before liblustre initialization
 
Bugzilla: 9794
 
Description: Liblustre uses system PRNG disturbing its usage by user application
 
Details: Introduce internal to lustre fast and high-quality PRNG for lustre usage and make liblustre and some other places in generic lustre code to use it.
 
  
Severity: minor
+
*Severity: normal
Frequency: rare
 
Bugzilla: 9309
 
Description: lconf can hit an error exception but still return success.
 
Details: The lconf command catches the Command error exception at the top level script context and will exit with the associated exit status, but doesn't ensure that this exit status is non-zero.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13596 13596]
Frequency: rare
 
Bugzilla: 9493
 
Description: failure of ptlrpc thread startup can cause oops
 
Details: Starting a ptlrpc service thread can fail if there are a large number of threads or the server memory is very fragmented. Handle this without oopsing.  
 
  
Severity: minor
+
Description: MDS hang after unclean shutdown of lots of clients
Frequency: always, only if liblustre and non-default acceptor port was used
 
Bugzilla: 9933
 
Description: liblustre cannot connect to servers with non-default acceptor port
 
Details: tcpnal_set_default_params() was not called and was therefore ignoring the environment varaible TCPNAL_PORT, as well as other TCPNAL_ environment variables
 
  
Severity: minor
+
Details: Never resend AST requests.  
Frequency: rare
 
Bugzilla: 9923
 
Description: two objects could be created on the same OST for a single file
 
Details: If an OST is down, in some cases it was possible to create two objects on a single OST for a single file. No problems other than potential performance impact and spurious error messages.  
 
  
Severity: minor
 
Frequency: rare
 
Bugzilla: 5681, 9562
 
Description: Client may oops in ll_unhash_aliases
 
Details: Client dcache may become inconsistent in race condition. In some cases "getcwd" can fail if the current directory is modified.
 
  
Severity: minor
+
*Severity: normal
Frequency: always
 
Bugzilla: 9942
 
Description: Inode refcounting problems in NFS export code
 
Details: link_raw functions used to call d_instantiate without obtaining extra inode reference first.
 
  
Severity: minor
+
Frequency: Always, for kernels after 2.6.16
Frequency: rare
 
Bugzilla: 9942, 9903
 
Description: Referencing freed requests leading to crash, memleaks with NFS.
 
Details: We used to require that call to ll_revalidate_it was always followed by ll_lookup_it. Also with revalidate_special() it is possible to call ll_revalidate_it() twice for the same dentry even if first occurence returned success. This fix changes semantic between DISP_ENQ_COMPLETE disposition flag to mean there is extra reference on a request referred from the intent. ll_intent_release() then releases such a request.  
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13304 13304]
Frequency: rare, normally benchmark loads only
 
Bugzilla: 1443
 
Description: unlinked inodes were kept in memory on the client
 
Details: If a client is repeatedly creating and unlinking files it can accumulate a lot of stale inodes in the inode slab cache. If there is no other client load running this can cause the client node to run out of memory. Instead flush old inodes from client cache that have the same inode number as a new inode.  
 
  
Severity: minor
+
Description: Fix warning idr_remove called for id=.. which is not allocated.  
Frequency: SLES9 2.6.5 kernel and long filenames only
+
Details: Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super.  
Bugzilla: 9969, 10379
 
Description: utime reports stale NFS file handle
 
Details: SLES9 uses out-of-dentry names in some cases, which confused the lustre dentry revalidation. Change it to always use the in-dentry qstr.  
 
  
Severity: minor
 
Frequency: echo_client brw_test command
 
Bugzilla: 9919
 
Description: fix echo_client to work with OST preallocated code
 
Details: OST preallocation code (5137) didn't take echo_client IO path into account: echo_client calls filter methods outside of any OST thread and, hence, there is no per-thread preallocated pages and buffers to use. Solution: hijack pga pages for IO. As a byproduct, this avoids unnecessary data copying.
 
  
Severity: minor
+
*Severity: minor
Frequency: rare
 
Bugzilla: 3555, 5962, 6025, 6155, 6296, 9574
 
Description: Client can oops in mdc_commit_close() after open replay
 
Details: It was possible for the MDS to return an open request with no transaction number in mds_finish_transno() if the client was evicted, but without actually returning an error. Clients would later try to replay that open and may trip an assertion Simplify the client close codepath, and always return an error from the MDS in case the open is not successful.
 
  
Changes from v1.4.4 to v1.4.5
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12186 12186]
Severity: enhancement
 
Frequency: occasional, if non-standard max_dirty_mb used
 
Bugzilla: 7138
 
Description: Client will block write RPCs if not enough grant
 
Details: If a client has max_dirty_mb smaller than max_rpcs_in_flight, then the client will block writes while waiting for another RPC to complete instead of consuming its dirty limit. With change we get improved performance when max_dirty_mb is small.  
 
  
Severity: enhancement
+
Description: Fix errors in lfs documentation
Bugzilla: 3389, 6253
 
Description: Add support for supplementary groups on the MDS.
 
Details: The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side lookups for user supplementary groups into a cache.
 
  
Severity: enhancement
+
Details: Fixes man pages
Bugzilla: 6902
 
Description: Add ability to evict clients by NID from MDS.
 
Details: By echoing "nid:$NID" string into /proc/fs/lustre/mds/.../evict_client client with nid that equals to $NID would be instantly evicted from this MDS and from all active OSTs connected to it.
 
  
Severity: major
 
Frequency: rare
 
Bugzilla: 7264
 
Description: Mounting an ldiskfs file system with mballoc may crash OST node.
 
Details: ldiskfs mballoc code may reference an uninitialized buddy struct at startup during orphan unlinking. Instead, skip buddy update before setup, as it will be regenerated after recovery is complete.
 
  
Severity: minor
+
*Severity: minor
 +
 
 
Frequency: rare
 
Frequency: rare
Bugzilla: 7039
 
Description: If an OST is inactive, its locks might reference stale inodes.
 
Details: lov_change_cbdata() must iterate over all namespaces, even if they are inactive to clear inode references from the lock.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12588 12588]
Bugzilla: 7278
 
Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
 
Details: Make libsysio to not enforce O_EXCL by clearing the flag, for liblustre O_EXCL is enforced by MDS.  
 
  
Severity: minor
+
Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly.  
Bugzilla: 6455
 
Description: readdir never returns NULL in liblustre.
 
Details: Corrected llu_iop_getdirentries logic, to return offset of next dentry in struct dirent.  
 
  
Severity: minor
+
Details: void sending multiple quota reqs to mds, which will keep the status between the reqs.  
Bugzilla: 7137
 
Frequency: liblustre only, depends on application IO pattern
 
Description: liblustre clients evicted if not contacting servers
 
Details: Don't put liblustre clients into the ping_evictor list, so they will not be evicted by the pinger ever.  
 
  
Severity: minor
 
Bugzilla: 7198
 
Description: Do not query file size twice, somewhat slowing stat(2) calls.
 
Details: lookup_it_finish() used to query file size from OSTs that was not needed.
 
  
Severity: minor
+
*Severity: cleanup
Bugzilla: 6237
 
Description: service threads change working directory to that of init
 
Details: Starting lustre service threads may pin the working directory of the parent thread, making that filesystem busy. Threads now change to the working directory of init to avoid this.
 
  
Severity: minor
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=13532 13532]
Bugzilla: 6827
 
Frequency: during shutdown only
 
Description: shutdown with a failed MDS or OST can cause unmount to hang
 
Details: Don't resend DISCONNECT messages in ptlrpc_disconnect_import() if server is down.  
 
  
Severity: minor
+
Description: rewrite ext2-derived code in llite/dir.c and obdclass/uuid.c
Bugzilla: 7331
 
Frequency: 2.6 only
 
Description: chmod/chown may include an extra supplementary group
 
Details: ll{,u}_mdc_pack_op_data() does not properly initialize the supplementary group and if none is specified this is used.  
 
  
Severity: minor
+
Details: rewrite inherited code (uuid parsing code from ext2 utils and readdir code from ext3) from scratch preserving functionality.
Bugzilla: 5479 (6816)
 
Frequency: rare
 
Description: Racing open + rm can assert client in mdc_set_open_replay_data()
 
Details: If lookup is in progress on a file that is unlinked we might try to revalidate the inode and fail in revalidate after lookup is complete and ll_file_open() enqueues the open again but it_open_error() was not checking DISP_OPEN_OPEN errors correctly.  
 
  
Severity: minor
+
=Changes from v1.6.1 to v1.6.2=
Frequency: always, if lconf --abort_recovery used
 
Bugzilla: 7047
 
Description: lconf --abort_recovery fails with 'Operation not supported'
 
Details: lconf was attempting to abort recovery on the MDT device and not the MDS device
 
  
Changes from v1.4.3 to v1.4.4
+
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)
Severity: enhancement
 
Bugzilla: 7015
 
Description: Addition of lconf --service command line option
 
Details: lconf now accepts a '--service <arg>' option, which is shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
 
  
Severity: enhancement
+
Client support for unpatched kernels: (see [[Patchless Client]]) 2.6.16 - 2.6.22 vanilla (kernel.org)
Bugzilla: 6101
 
Description: Failover mode is now the default for OSTs.
 
Details: By default, OSTs will now run in failover mode. To return to the old behaviour, add '--failout' to the lmc line for OSTs.  
 
  
Severity: enhancement
+
Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release.
Bugzilla: 1693
 
Description: Health checks are now provided for MDS and OSTs
 
Details: Additional detailed health check information on MSD and OSTs is now provided through the procfs health_check value.  
 
  
Severity: critical
+
Recommended e2fsprogs version: 1.39.cfs8
Bugzilla: 6866
 
Frequency: rare, only 2.6 kernels
 
Description: Unusual file access patterns on the MDS may result in inode data being lost in very rare circumstances.
 
Details: Bad interaction between the ea-in-inode patch and the "no-read" code in the 2.6 kernel caused the inode and/or EA data not to be read from disk, causing single-file corruption.  
 
  
Severity: critical
+
Note that reiserfs quotas are disabled on SLES 10 in this kernel.
Bugzilla: 6998
 
Frequency: rare, only 2.6 filesystems using extents
 
Description: Heavy concurrent write and delete load may cause data corruption.
 
Details: It was possible under high-load situations to have an extent metadata block in the block device cache from a just-unlinked file overwrite a newly-allocated data block. We now unmap any metadata buffers that alias just-allocated data blocks.  
 
  
Severity: major
+
*Severity: enhancement
Frequency: rare (only unsupported configurations with a node running as an OST and a client)
 
Bugzilla: 6514, 5137
 
Description: Mounting a Lustre file system on a node running as an OST could lead to deadlocks
 
Details: OSTs now preallocates memory needed to write out data at startup, instead of when needed, to avoid having to allocate memory in possibly low memory situations. Specifically, if the file system is mounted on on OST, memory pressure could force it to try to write out data, which it needed to allocate memory to do. Due to the low memory, it would be unable to do so and the node would become unresponsive.
 
  
Severity: major
+
Bugzilla: [https://bugzilla.lustre.org/show_bug.cgi?id=12786 12786]
Bugzilla: