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Mismatch UUID

To: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Subject: Mismatch UUID
From: Robert Tench <robtench@xxxxxxxxxxx>
Date: Fri, 14 Nov 2014 19:57:42 +1100
Delivered-to: xfs@xxxxxxxxxxx
Importance: Normal
Robert has a file to share with you on OneDrive. To view it, click the link below.
So finally have managed to find a way to save the complete log of running xfs_repair -n /dev.md4

And below is the output of xfs_check /dev/md4

root@ubuntu:~# xfs_check /dev/md4
* ERROR: mismatched uuid in log
*            SB : 813833a7-1bd3-4447-b575-09d1471bb652
*            log: ea3833af-25ce-9f91-b575-018fb49df3b1
ERROR: The filesystem has valuable metadata changes in a log which needs to
be replayed.  Mount the filesystem to replay the log, and unmount it before
re-running xfs_check.  If you are unable to mount the filesystem, then use
the xfs_repair -L option to destroy the log and attempt a repair.
Note that destroying the log may cause corruption -- please attempt a mount
of the filesystem before doing this.

And the output from mdadm -D /dev/md4 is as follows

root@ubuntu:~# mdadm -D /dev/md4
/dev/md4:
        Version : 1.0
  Creation Time : Fri Jan  1 01:31:17 2010
     Raid Level : raid5
     Array Size : 11712962560 (11170.35 GiB 11994.07 GB)
  Used Dev Size : 2928240640 (2792.59 GiB 2998.52 GB)
   Raid Devices : 5
  Total Devices : 5
    Persistence : Superblock is persistent

    Update Time : Fri Nov 14 15:58:16 2014
          State : clean
 Active Devices : 5
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : (none):4
           UUID : e0829810:9782b51f:25529f65:8823419c
         Events : 1243386

    Number   Major   Minor   RaidDevice State
       0       8        2        0      active sync   /dev/sda2
       6       8       18        1      active sync   /dev/sdb2
       2       8       34        2      active sync   /dev/sdc2
       5       8       50        3      active sync   /dev/sdd2
       4       8       66        4      active sync   /dev/sde2


And then the response from mdadm -E /dev/md4

root@ubuntu:~# mdadm -E /dev/md4
mdadm: No md superblock detected on /dev/md4.

Not sure what to do, any help would be appreciated

Regards,

Rob



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