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After a power failure during server installation of CentOS, the external storage system that contains user data could not be mounted due to failed superblocks. I performed an xfs_repair on the system, which worked fine, but only the directories that are owned by root appear after the file system is mounted.

The file system is a Dell MD3200 with 4 LUNS that are assembled in raid 0 via mdadm. Prior to the power outage, the LUNS were detected as /dev/dm-0, /dev/dm-1, etc. After the xfs_repair they appear as /dev/sd* instead as the LUNS are no longer recognized as virtual disks (generated by Dell MDSA).

I would greatly appreciate any help. Thank you.

  • There really isn't enough info here to be able to suggest anything specific. An xfs_repair won't change how devices are presented to the OS, so I suspect you've got something "deeper" going on. – womble Aug 23 '15 at 23:24
  • Why were the LUNs arranged in RAID-0 like this? It sounds like this was a disaster waiting to happen. – ewwhite Aug 23 '15 at 23:55
  • Yes, I agree, the raid 0 was decided by a third party. Thanks for the comments, I think the problem is not solvable and the data will be lost. – Daneera Aug 24 '15 at 0:24

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