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Handling File System Errors: Difference between revisions
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<small>''(Updated: Mar 2010)''</small> | |||
From time to time, usually due to catastrophic disk / RAID failures, it may be necessary to repair the backing file system of an OST or MDT to correct file system errors. This is done using a special version of the ''e2fsck'' tool. In such cases, it may also be useful to run ''lfsck'', a Lustre™-specific ''fsck'' tool that checks the coherency of a running Lustre file system as a whole. | |||
A Lustre-specific version of ''e2fsprogs'' can be found at [http://downloads.lustre.org/public/tools/e2fsprogs/ http://downloads.lustre.org/public/tools/e2fsprogs/]. A quilt patchset of all changes to the vanilla e2fsprogs is available in ''e2fsprogs-{version}-patches.tgz''. | |||
For information about: | |||
* Using e2fsck on a backing file system, see [http://wiki.lustre.org/manual/LustreManual20_HTML/TroubleShootingRecovery.html#50438225_pgfId-1292068 Section 27.1: ''Recovering from Errors or Corruption on a Backing File System''] in the [http://wiki.lustre.org/manual/LustreManual20_HTML/index.html ''Lustre Operations Manual'']. | |||
* Running e2fsck+lfsck on a corrupted Lustre file system, see [http://wiki.lustre.org/manual/LustreManual20_HTML/TroubleShootingRecovery.html#50438225_pgfId-1291230 Section 27.2: ''Recovering from Corruption in the Lustre File System''] in the [http://wiki.lustre.org/manual/LustreManual20_HTML/index.html ''Lustre Operations Manual'']. | |||
* Addressing orphaned objects, see [http://wiki.lustre.org/manual/LustreManual20_HTML/TroubleShootingRecovery.html#50438225_pgfId-1290574 Section 27.2.1: ''Working with Orphaned Objects''] in the [http://wiki.lustre.org/manual/LustreManual20_HTML/index.html ''Lustre Operations Manual'']. | |||
For more information about ''lfsck'', see [http://wiki.lustre.org/manual/LustreManual20_HTML/UserUtilities_HTML.html#50438206_pgfId-1305844 Section 32.3: ''lfsck''] in the [http://wiki.lustre.org/manual/LustreManual20_HTML/index.html ''Lustre Operations Manual'']. | |||
Latest revision as of 07:06, 20 January 2011
(Updated: Mar 2010)
From time to time, usually due to catastrophic disk / RAID failures, it may be necessary to repair the backing file system of an OST or MDT to correct file system errors. This is done using a special version of the e2fsck tool. In such cases, it may also be useful to run lfsck, a Lustre™-specific fsck tool that checks the coherency of a running Lustre file system as a whole.
A Lustre-specific version of e2fsprogs can be found at http://downloads.lustre.org/public/tools/e2fsprogs/. A quilt patchset of all changes to the vanilla e2fsprogs is available in e2fsprogs-{version}-patches.tgz.
For information about:
- Using e2fsck on a backing file system, see Section 27.1: Recovering from Errors or Corruption on a Backing File System in the Lustre Operations Manual.
- Running e2fsck+lfsck on a corrupted Lustre file system, see Section 27.2: Recovering from Corruption in the Lustre File System in the Lustre Operations Manual.
- Addressing orphaned objects, see Section 27.2.1: Working with Orphaned Objects in the Lustre Operations Manual.
For more information about lfsck, see Section 32.3: lfsck in the Lustre Operations Manual.
