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  • Architecture - DMU Zerocopy
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    965 bytes (113 words) - 14:02, 22 January 2010
  • DRBD and Lustre
    These tests measured write throughput (2 OSTs on 1 OSS): ./iozone -c -e -i 0 -s 1g -t 1 -F /mnt/lustre/iozone -w
    2 KB (353 words) - 08:50, 22 February 2010
  • Architecture - Free Space Management
    In Lustre 1.6, the MDS assigns file stripe objects to OSTs using a mix of load balancin {| border=1 cellspacing=1
    3 KB (420 words) - 14:11, 22 January 2010
  • Configuring InfiniBand Connectivity
    ...0_HTML/ConfigurationFilesModuleParameters.html#50438293_pgfId-1293321 35.2.1: ''LNET Options''] in the [http://wiki.lustre.org/manual/LustreManual20_HTM ====OpenIB generation 1 / Mellanox Gold====
    2 KB (267 words) - 11:57, 20 January 2011
  • Lustre DDN Tuning
    ...m, if each client has up to 8 read RPCs in flight, then this is 8 * 1000 * 1 MB = 8 GB of reads in flight. With a DDN cache in the range of 2 to 5 GB (d ...omer testing, we have found the optimal values to be 64 KB for the MDT and 1 MB for the OST.
    7 KB (1,063 words) - 11:11, 22 February 2010
  • Lustre User Group 2010
    {| border=1 cellpadding=0 |style="background:#E0E0E0"|'''12:00 - 1:00'''
    6 KB (940 words) - 10:43, 20 January 2011
  • Configuring Lustre File Striping
    1: lustre-OST0001_UUID ACTIVE [root@LustreClient01 lustre]# lfs setstripe -s 4M -i 0 -c 1 /mnt/lustre
    5 KB (701 words) - 17:10, 1 February 2012
  • Lustre User Group 2007
    12:00-1:00 p.m. Lunch 1:00-1:30 p.m. Lustre v1.6 Features & Benefits (Part I)
    3 KB (500 words) - 10:44, 20 January 2011
  • FAQ - Release Testing and Upgrading
    ...or updates receive testing on the largest clusters available to us, around 1,000 nodes. ....4.x release will not be interoperable with 1.8.x release. Similarly, the 1.6.x release will not be able to interoperate with 2.0.x release.
    3 KB (500 words) - 08:32, 22 February 2010
  • Architecture - Backup
    {|cellspacing="0" border="1" ## A collection of changes between FS_(N-1) and FS_N consisting of:
    4 KB (710 words) - 13:58, 22 January 2010
  • Lustre 2.0 Release Milestone Status
    ==Lustre 2.0 Beta-1 April 15, 2010== The focus of the first Beta release (Beta-1) of 2.0 was to continue improve stability of Lustre while landing fixes to
    9 KB (1,360 words) - 11:18, 20 January 2011
  • Architecture - Recovery Failures
    {|border=1 cellspacing="0" {| border=1 cellspacing=0
    5 KB (785 words) - 14:22, 22 January 2010
  • Netconsole
    1. Add the following line to your boot command: linux netconsole=4444@10.0.0.1/eth1,9353@10.0.0.2/12:34:56:78:9a:bc
    2 KB (267 words) - 11:52, 22 February 2010
  • Handling Full OSTs
    lustre-OST0000_UUID 2.0G 751.3M 1.1G 37% /mnt/lustre[OST:0] lustre-OST0001_UUID 2.0G 755.3M 1.1G 37% /mnt/lustre[OST:1]
    6 KB (880 words) - 08:38, 22 February 2010
  • Architecture - Profiling Tools for IO
    {|border=1 cellspacing="0" {|border=1 cellspacing="0"
    4 KB (663 words) - 14:20, 22 January 2010
  • Configuring RAID for Disk Arrays
    ...anual/LustreManual20_HTML/ConfiguringStorage.html#50438208_60972 Section 6.1: ''Selecting Storage for the MDT and OSTs''] and [http://wiki.lustre.org/ma 1. ''Install Lustre, but do not configure it yet.'' See [[Use:Use | Installin
    9 KB (1,461 words) - 06:31, 20 January 2011
  • Architecture - MPI IO and NetCDF
    {|border=1 cellspacing="0" {|border=1 cellspacing="0"
    6 KB (861 words) - 14:17, 22 January 2010
  • Architecture - Changelogs 1.6
    = Replication Changelogs for Lustre 1.6 = ...s a short-term feature to facilitate efficient replication of large Lustre 1.6 filesystems.
    704 bytes (98 words) - 13:59, 22 January 2010
  • Architecture - Commit on Share
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    9 KB (1,118 words) - 14:00, 22 January 2010
  • Architecture - HSM
    {|cellspacing="0" border="1" {|cellspacing="0" border="1"
    2 KB (369 words) - 14:12, 22 January 2010
  • Architecture - CROW
    {| border=1 cellspacing=0 {| border=1 cellspacing=0
    6 KB (925 words) - 14:01, 22 January 2010
  • Architecture - Interoperability 1.6 1.8 2.0
    {| border=1 cellspacing=0 | 1.6
    2 KB (315 words) - 14:13, 22 January 2010
  • Architecture - Userspace Servers
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    8 KB (1,034 words) - 16:47, 3 February 2010
  • Architecture - External File Locking
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    5 KB (683 words) - 14:09, 22 January 2010
  • Architecture - ZFS large dnodes
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    2 KB (382 words) - 14:27, 22 January 2010
  • Large-Scale Tuning for Cray XT
    {| border="1" cellspacing=0 cellpadding="10" {| border="1" cellspacing=0 cellpadding="10"
    3 KB (438 words) - 08:54, 22 February 2010
  • Upgrading to a New Version of Lustre
    For Lustre 1.8.x, the following upgrades are supported: * Lustre 1.6.x (latest version) to Lustre 1.8.x (latest version).
    10 KB (1,542 words) - 10:23, 20 January 2011
  • Lustre Configuration Example
    {| border=1 cellpadding=0 |<strong>network type</strong>||TCP/IP||<strong>MGS node</strong>||10.2.0.1@tcp0
    5 KB (684 words) - 11:02, 22 February 2010
  • Testing Lustre Code
    1. Check to see if a bug has been logged for the failure and file a new bug i * Run only tests 1, 3, 4, 6, 9 in ''sanity.sh'' with a custom configuration ''example1.sh''.
    7 KB (1,069 words) - 10:27, 20 January 2011
  • FAQ - Sizing
    ...ple, a 100 TB file system may use 100 single-GigE-connected OSS nodes with 1 TB of 100 MB/sec storage each, providing 10 GB/sec of aggregate bandwidth. ...ratio. Nevertheless, it is common to deploy 1 GB/s of OSS throughput per 1 TFLOP/s of compute power.
    6 KB (1,004 words) - 08:32, 22 February 2010
  • Sample Style
    * Item 1 * Item 1
    8 KB (1,092 words) - 13:13, 16 December 2009
  • Architecture - User Level OSS
    {| width="80%" border=1
    1,002 bytes (174 words) - 14:25, 22 January 2010
  • Lustre All-Hands Meeting 3/08
    * [[Media:Jd.day1-0308.pdf|''Day 1'']] - [[Media:Jd.day2-0308.pdf|''Day 2'']] - JD
    984 bytes (138 words) - 11:15, 20 January 2011
  • Architecture - FIDs on OST
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    3 KB (382 words) - 14:09, 22 January 2010
  • Architecture - Request Redirection
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    11 KB (1,647 words) - 14:22, 22 January 2010
  • Architecture - Punch and Extent Migration Requirements
    {|class="wikitable" style="width:75%;" border="1" cellspacing="0"
    1 KB (205 words) - 14:21, 22 January 2010
  • Architecture - LRE Images
    {| border=1 cellspacing=0 |Image||A root file system for an operating system, packaged as: (1) a disk file system image (2) a file system subtree (3) a vmware image (4)
    5 KB (723 words) - 14:15, 22 January 2010
  • Architecture - DMU OSD
    {| cellspacing="0" border="1"
    860 bytes (119 words) - 14:02, 22 January 2010
  • Architecture - Migration (2)
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    8 KB (1,123 words) - 14:17, 22 January 2010
  • Architecture - Caching OSS
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    13 KB (1,825 words) - 13:58, 22 January 2010
  • Architecture - ZFS TinyZAP
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    6 KB (965 words) - 14:27, 22 January 2010
  • Lustre User Group 2006
    While everyone is welcome to attend the first 1.5 days of the meeting, we must ask that organizations designate no more tha 12:00-1:00 p.m. Lunch
    6 KB (925 words) - 10:45, 20 January 2011
  • Lustre Documentation
    {| border="1" cellspacing=0 cellpadding="10" | <small>'''1.8'''</small>
    2 KB (232 words) - 11:04, 20 January 2011
  • Architecture - Space Manager
    {| border=1 cellspacing=0 cellpadding=3 {|border=1 cellspacing="0" cellpading="4"
    5 KB (722 words) - 14:24, 22 January 2010
  • Architecture - Flash Cache
    {|cellspacing="0" border="1" {|border=1 cellspacing="0"
    4 KB (705 words) - 14:10, 22 January 2010
  • Architecture - CTDB with Lustre
    {| border=1 cellspacing=0 {| border=1 cellspacing=0
    16 KB (2,220 words) - 13:14, 2 February 2010
  • Architecture - Fileset
    {|cellspacing="0" border="1" {| border=1 cellspacing=0
    12 KB (1,742 words) - 14:10, 22 January 2010
  • Architecture - Version Based Recovery
    {| cellspacing="0" border="1" {|border=1 cellspacing="0"
    17 KB (2,305 words) - 14:25, 22 January 2010
  • Architecture - PAG
    1) on disk (/tmp/krb5cc_uid) 1) root access<br>
    4 KB (808 words) - 14:20, 22 January 2010
  • Applying Lustre Patches to a Kernel
    * Currently-supported kernel version (e.g., 2.6.18-128.7.1.el5) 1. ''Select a series file.'' First, choose the correct kernel target (see [[#
    11 KB (1,861 words) - 06:13, 22 February 2010
  • Preparing to Install Lustre
    {| border=1 cellpadding=0 ...the [http://wiki.lustre.org/manual/LustreManual18_HTML/index.html ''Lustre 1.8 Operations Manual''].
    9 KB (1,347 words) - 10:17, 20 January 2011
  • Architecture - Adaptive Timeouts - Use Cases
    {|border=1 cellspacing="0" {| border=1 cellspacing=0
    12 KB (1,843 words) - 13:57, 22 January 2010
  • Architecture - Sub Tree Locks
    {|cellspacing="0" border="1" |Callback to lock||usability||client 1 holds an ordinary lock on an object X within a subtree of directory Y, clie
    20 KB (3,036 words) - 14:24, 22 January 2010
  • Architecture - IO system
    === Step 1: Use a Request Scheduler ===
    6 KB (964 words) - 14:14, 22 January 2010
  • FAQ - Installation
    ...ically, write I/O is low, but seek latency is very important, hence RAID-0+1 mirrored storage (RAID-0 striping of multiple RAID-1 mirrored disks) is strongly recommended for the MDS. Access to metadata fr
    6 KB (956 words) - 08:26, 22 February 2010
  • Using Xen with Lustre
    1. Use ''virt-install'' to provision the operating system as shown in the exa ...the ''virt-install'' command line tool, see the [http://linux.die.net/man/1/virt-install ''virt-install'' Linux man page].
    9 KB (1,369 words) - 12:19, 22 February 2010
  • Lustre Packages
    {| border=1 cellpadding=0 ...LustreManual20_HTML/InstallingLustre.html#50438261_pgfId-1294006 Section 8.1: ''Preparing to Install the Lustre Software''] in the [http://wiki.lustre.o
    3 KB (387 words) - 10:58, 20 January 2011
  • Architecture - OSS-on-DMU
    {| border=1 cellspacing=0 {| border=1 cellspacing=0
    4 KB (623 words) - 14:20, 22 January 2010
  • Using Red Hat Cluster Manager with Lustre
    '''1. Edit the totem section of the ''openais.conf'' configuration file to desig mcastaddr&#58; 226.94.1.1
    16 KB (2,207 words) - 09:13, 20 December 2010
  • Building and Installing Lustre from Source Code
    ...t of available RPMs for Lustre 1.8.x and the latest version of Lustre 1.6 (1.6.7.2), see the [[Lustre_Release_Information#Lustre_Support_Matrix|Lustre T ...'] for an example showing how to install Lustre 1.6.6 using the Myricom MX 1.2.7 driver. The same process can be used for other third party network stac
    11 KB (1,697 words) - 11:59, 20 January 2011
  • POSIX Compliance Testing
    1. Download the following scripts into ''/usr/src/posix'': 1. Download all the POSIX files in [http://downloads.lustre.org/public/tools/
    11 KB (1,795 words) - 14:35, 23 March 2010
  • Migrating to Git
    1. In your branch CVS working tree, use 'cvs diff' against the base tree dive
    2 KB (331 words) - 15:53, 20 May 2010
  • RAID5 Patches
    {|border=1 cellspacing=0 ...cache, on dual-core, two-way Opteron. This takes up to 30-33% of CPU doing 1 GB/s writes.
    5 KB (937 words) - 11:57, 22 February 2010
  • Lustre FUSE
    Linux dhcp232 2.6.9-42.0.8.EL #1 Tue Jan 30 12:10:22 EST 2007 i686 i686 i386 GNU/Linux Linux dhcp236 2.6.9-42.0.3.EL_lustre.1.5.97smp #1 SMP Thu Jan 11 17:55:05 MST 2007 i686 i686 i386 GNU/Linux
    5 KB (800 words) - 11:19, 22 February 2010
  • Lustre 2.0
    {| border=1 cellpadding=0 ==Lustre Interoperability - 1.8 to 2.0==
    2 KB (288 words) - 10:38, 24 August 2010
  • Architecture - Wide Striping
    # individual objects OBJ{0, ..., num_obj - 1} in the file can be located:
    2 KB (338 words) - 14:26, 22 January 2010
  • Architecture - Simple Space Balance Migration
    {| border=1 cellspacing=0 {| border=1 cellspacing=0
    9 KB (1,467 words) - 14:23, 22 January 2010
  • Lustre Publications
    {| border=1 cellspacing=0 {| border=1 cellspacing=0
    11 KB (1,510 words) - 17:57, 18 December 2009
  • Architecture - Open by fid
    {|cellspacing="0" border="1"
    2 KB (394 words) - 14:19, 22 January 2010
  • Architecture - Writing Architecture Documents
    * Arch pages should be short and sweet; if printed, most components would fit 1-2 pages; major components maybe 5-10 (say for the LRE) ...es - e.g. provide performance of 90% of hardware, propagate changes within 1 sec, recovery without semantic changes to clients
    6 KB (832 words) - 16:52, 20 January 2010
  • Building Lustre Code
    1. ''Run the'' autogen ''script.'' The ''autogen'' script performs a few chec checking for automake-1.7 1.7.8... found 1.7.9
    2 KB (344 words) - 06:37, 22 February 2010
  • Architecture - Changelogs
    {|cellspacing="0" border="1" {|cellspacing="0" border="1"
    16 KB (2,263 words) - 13:58, 22 January 2010
  • SC'09 and Lustre Senior Technical Meeting 11/09
    * [[Media:Front_Page_kdmu-1.avi|''kDMU part 1'' ]] kdmu-1.avi (Ricardo)
    2 KB (322 words) - 10:33, 20 January 2011
  • Architecture - End-to-end Checksumming
    1. Write data
    2 KB (397 words) - 14:03, 22 January 2010
  • Architecture - Interoperability fids zfs
    ...lient, server, network, and storage interoperability during migration from 1.6-based, fidless Lustre clusters, using ldiskfs as a back-end file system, ...ase in b1_6 line of development. This might end up being 1.6.something, or 1.7.
    34 KB (5,038 words) - 00:19, 4 October 2012
  • GSS / Kerberos
    {|border=1 cellspacing=0 ...ead. The on-wire rpc format is compatible with old versions (1.4.x, 1.6.x, 1.8.x).
    10 KB (1,660 words) - 09:26, 12 April 2013
  • Architecture - Write Back Cache
    ; '''scalability''' : client should be able to execute 32K creations of 1--64KB files per second. Files maybe created in different directories with f {| border=1 cellspacing=0
    24 KB (3,464 words) - 14:39, 27 July 2010
  • Acceptance Small (acc-sm) Testing on Lustre
    ACC_SM_ONLY=”SANITYN” ONLY=”1 2” sh acceptance-small.sh The default Lustre configuration is a single node setup with mdscount=1 and ostcount=2. All devices are loop back devices. YALA does not use a defa
    21 KB (3,353 words) - 10:46, 10 March 2010
  • Lustre Release Information
    {| border=1 cellpadding=0 |<strong>1.8-1.8.x</strong>||May 2009||June 2012*||[[Change Log 1.8]]
    19 KB (2,502 words) - 16:35, 24 July 2013
  • Architecture - MDS-on-DMU
    {|cellspacing="0" border="1" {|cellspacing="0" border="1"
    6 KB (758 words) - 14:16, 22 January 2010
  • Reporting Bugs
    1. Before opening a new bug report, do a quick search to avoid filing a dupli
    3 KB (511 words) - 11:34, 5 January 2011
  • Architecture - Server Network Striping
    '''Full Stripe''' A collection of stripe units in chunk objects that maps 1-1 to an extent in striped object. (In RAIDframe, ''stripe'' is short for ''fu ...ides on OST '''A''' and sub Lock '''L'''' of stripe unit with index ''(P + 1) % G'' which resides on OST B.
    26 KB (3,768 words) - 14:23, 22 January 2010
  • Architecture - Wire Level Protocol
    ...e message is encapsulated within a Portals message header, the figure 23.1.1 illustrates this. A lustre message could have message body with multiple me {| border=1 cellspacing=0
    36 KB (5,757 words) - 14:26, 22 January 2010
  • Architecture - MDS striping format
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    31 KB (4,814 words) - 14:15, 22 January 2010
  • Installing Lustre from Downloaded RPMs
    1. ''Verify that all of the Lustre installation requirements have been met.''
    4 KB (623 words) - 11:29, 20 January 2011
  • Using Pacemaker with Lustre
    ...maker/1.0/html/Pacemaker_Explained www.clusterlabs.org/doc/en-US/Pacemaker/1.0/html/Pacemaker_Explained]. '''1. Edit the totem section of the ''corosync.conf'' (or ''openais.conf'') conf
    23 KB (3,679 words) - 09:59, 4 February 2011
  • Lustre User Group 2008
    1. [[Media:LUG08-Lustre-uOSS.pdf|Userspace Server Architecture Slides]]
    4 KB (571 words) - 10:44, 20 January 2011
  • Lustre Tuning
    many CPUs are on each OSS node (1 thread / 128MB * num_cpus). If the load on the shared—each thread allocates approximately 1.5 MB (maximum RPC size + 0.5 MB)
    9 KB (1,630 words) - 05:57, 30 April 2010
  • Configuring the Lustre File System
    1. ''Define the module options for Lustre networking (LNET)'' by adding this
    5 KB (758 words) - 11:53, 20 January 2011
  • Architecture Descriptions
    ...ngelogs 1.6'' ]] (Used to facilitate efficient replication of large Lustre 1.6 filesystems) [[Architecture - Interoperability 1.6 1.8 2.0|''Interoperability 1.6 / 1.8 / 2.0'' ]] (interoperability definitions and QAS summary)
    9 KB (1,200 words) - 12:09, 20 January 2011
  • ZFS and Lustre
    ...the checksum computation does consume some processor cycles, approximately 1 GHz of CPU time to process 500 MB/sec of I/O.
    4 KB (617 words) - 11:26, 10 September 2010
  • Architecture - HSM Migration
    {| border=1 cellspacing=0 {|border=1 cellspacing="0"
    25 KB (3,874 words) - 14:12, 22 January 2010
  • Debian Install
    Check the kernel config works: (This might generate 1 or 2 minor questions. Just --append-to-version "-lustre-1.6.5.1" --revision=yyyymmdd kernel_image
    5 KB (687 words) - 08:49, 22 February 2010
  • Lustre Debugging Procedures
    ...reManual20_HTML/LustreDebugging.html#50438274_pgfId-1295747 Section 28.2.1.1: ''Lustre Debug Messages''] in the [http://wiki.lustre.org/manual/LustreMan ...streManual20_HTML/LustreDebugging.html#50438274_pgfId-1295842 Section 28.2.1.2: ''Format of Lustre Debug Messages''] in the [http://wiki.lustre.org/manu
    5 KB (790 words) - 08:08, 20 January 2011
  • Submitting Patches
    1. Read, complete, and return the form found at [[Media:Oracle_Contributor_Ag ...r Lustre 2.x, or [mailto:lustre-gate-18@sun.com lustre-gate-18] for Lustre 1.8. Include the bug number and reviewer in the commit message along with a
    5 KB (785 words) - 10:29, 20 January 2011
  • Architecture - Epochs
    ...{0,1,2} are independent of the epoch boundaries in the source cluster SE{0,1,2} (requiring proper epoch nesting would necessary add a synchronization be
    11 KB (1,784 words) - 14:07, 22 January 2010
  • Architecture - Lustre Logging API
    (1) (1) The generation of the logs. This is a 128 bit integer consisting of the mo
    24 KB (3,889 words) - 14:15, 22 January 2010
  • Architecture - Feature FS Replication
    ...itable for (i) ldiskfs (ii) Lustre 1.8 (ldiskfs with MDS&OSS) (iii) Lustre 1.10 (new MDS with OSD based fids) ...ly work on file system without hard links (regular files with link count > 1).
    28 KB (4,289 words) - 11:40, 21 January 2010
  • Architecture - Metadata API
    {| cellspacing="0" border="1" {| cellspacing="0" border="1"
    11 KB (1,588 words) - 14:16, 22 January 2010
  • Architecture - Client Cleanup
    {|cellspacing="0" border="1"
    4 KB (654 words) - 14:00, 22 January 2010
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