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Difference between revisions of "Handling File System Errors"

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<small>''(Updated: Feb 2010)''</small>
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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 tool that checks the coherency of a running Lustre file system as a whole.  
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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''.
 
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 ''e2fsck'', see:  
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For information about:  
  
* Using e2fsck on a backing file system in [http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50638972_pgfId-1289915 Section 19.5: ''Recovering from Errors or Corruption on a Backing File System''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
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* Using e2fsck on a backing file system, see [http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50598012_83826 Section 19.5: ''Recovering from Errors or Corruption on a Backing File System''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
* Running e2fsck+lfsck on a corrupted Lustre file system in [http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50638972_pgfId-1291230 Section 19.6: ''Recovering from Corruption in the Lustre File System''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
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* Running e2fsck+lfsck on a corrupted Lustre file system, see [http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50598012_373650 Section 19.6: ''Recovering from Corruption in the Lustre File System''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
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* Addressing orphaned objects, see [http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50598012_pgfId-1290574 Section 19.6.1: ''Working with Orphaned Objects''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
  
 
For more information about ''lfsck'', see [http://wiki.lustre.org/manual/LustreManual18_HTML/UserUtilitiesMan1_HTML.html#50638894_91700 Section 27.2: ''lfsck''] in the [[Lustre Documentation|''Lustre Operations Manual'']].
 
For more information about ''lfsck'', see [http://wiki.lustre.org/manual/LustreManual18_HTML/UserUtilitiesMan1_HTML.html#50638894_91700 Section 27.2: ''lfsck''] in the [[Lustre Documentation|''Lustre Operations Manual'']].

Revision as of 12:45, 27 March 2010

(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:

For more information about lfsck, see Section 27.2: lfsck in the Lustre Operations Manual.