We are currently running a few Coraid AoE devices which we have
formated using Raid-5 and XFS filesystem. The devices were shutdown
abruptly causing what looks like a some data issues. We are running a
Redhat 5 head unit connected to the disk array. When the devices came
back up we were unable to remount them. Based on the tools to check the
device we got the log information that the Superblock does not exist nor
does the secondary. We have two devices, each with 13 TB of disk space
each and both with what seems like the same issue. These devices were
used as a backup storage device, so they are the backup. But this
historical information is very critical to us. We attempted to run the
"xfs_repair -nv /dev/etherd/e4.1p1" command to see if found the
potential issues ( xfs_repair version 2.9.8 ). It came back with the
comments noted below. Does any one have any suggestions for pulling
this information off the drive and / or correcting this issue? What
other tools should I run to get more information? Thanks for any
support or suggestions you can provide.
> xfs_repair -nv /dev/etherd/e4.1p1
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Phase 1 - find and verify superblock...
error reading superblock 4 -- seek to offset 1219003957248 failed
couldn't verify primary superblock - bad magic number !!!
attempting to find secondary superblock...
................................................................................................
......................................................
..................
..................
............Sorry, could not find valid secondary superblock
Exiting now.
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