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xfsrestore: WARNING: corrupt extent header

To: xfs <xfs@xxxxxxxxxxx>
Subject: xfsrestore: WARNING: corrupt extent header
From: Tommy Wu <wu.tommy@xxxxxxxxx>
Date: Mon, 13 Feb 2012 12:46:22 +0800
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Hi!

   OS: Debian squeeze amd64
   xfsdump 3.0.6
   xfsprogs 3.1.7

   It happen when the xfsdump got message like:
/sbin/xfsdump: WARNING: could not open regular file ino 33905028 mode
0x00008180: Stale NFS file handle: not dumped
/sbin/xfsdump: WARNING: could not get list of non-root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of secure attributes for
nondir ino 33905028: Stale NFS file handle (116)

   when I restore the dump file, it will get this, and it's not
restore all files in the dump file:
xfsrestore: WARNING: corrupt extent header
xfsrestore: WARNING: unable to resync media file: some portion of dump
will NOT be restored


   for example:
cmd: /sbin/xfsdump -l 0 -o -p 300 -J -F -M weekly_backup -L var -
/dev/sda8 | /bin/gzip -qv | /usr/bin/split -b 1024m --verbose -
/vol/backup/fw1/dump.20120211/var.xfsdump.gz.
/sbin/xfsdump: using file dump (drive_simple) strategy
/sbin/xfsdump: version 3.0.6 (dump format 3.0) - Running single-threaded
/sbin/xfsdump: level 0 dump of fw1.teatime.com.tw:/var
/sbin/xfsdump: dump date: Sat Feb 11 00:17:41 2012
/sbin/xfsdump: session id: 54572680-8778-49e0-b6bd-635747c47de3
/sbin/xfsdump: session label: "var"
/sbin/xfsdump: ino map phase 1: constructing initial dump list
/sbin/xfsdump: ino map phase 2: skipping (no pruning necessary)
/sbin/xfsdump: ino map phase 3: skipping (only one dump stream)
/sbin/xfsdump: ino map construction complete
/sbin/xfsdump: estimated dump size: 598793856 bytes
/sbin/xfsdump: creating dump session media file 0 (media 0, file 0)
/sbin/xfsdump: dumping ino map
/sbin/xfsdump: dumping directories
/sbin/xfsdump: dumping non-directory files
/sbin/xfsdump: WARNING: could not open regular file ino 33905028 mode
0x00008180: Stale NFS file handle: not dumped
/sbin/xfsdump: WARNING: could not get list of non-root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of root attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: WARNING: could not get list of secure attributes for
nondir ino 33905028: Stale NFS file handle (116)
/sbin/xfsdump: ending media file
/sbin/xfsdump: media file size 549085392 bytes
/sbin/xfsdump: dump size (non-dir files) : 543886560 bytes
/sbin/xfsdump: dump complete: 46 seconds elapsed
/sbin/xfsdump: Dump Status: SUCCESS
 60.6%
creating file `/vol/backup/fw1/dump.20120211/var.xfsdump.gz.aa'

then test or restore from this dump file:
mail:/vol/backup/fw1/dump.20120211# cat var.xfsdump.gz.aa | gzip -dqv
| xfsrestore -v silent -p 300 -J -t - | grep ^xfsrestore:
xfsrestore: WARNING: corrupt extent header
xfsrestore: WARNING: unable to resync media file: some portion of dump
will NOT be restored


   It seems only happen in /var partition, and it's not always happen.

-- 

Tommy Wu

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