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I have almost exactly the same problem as described here.

I am on RHEL7. 3.10.0-229.4.2.el7.x86_6 Inside vmware VM.

file -s /dev/sdb 
/dev/sdb: LVM2 PV (Linux Logical Volume Manager), UUID: 89o2LY-bTso-5KXa-UXOF-CVm0-gT1u-DsKNpH, size: 107374510080

Also get the message: Metadata corruption detected at xfs_inode_buf_verify+0x75/0xd0 [xfs], block 0x2d01c10 XFS (dm-2): Unmount and run xfs_repair

After running repair I see the same message:

Phase 1 - find and verify superblock...
couldn't verify primary superblock - bad magic number !!!
attempting to find secondary superblock...

…

Found candidate secondary superblock…
Unable to verify superblock, continuing…
And on it goes until it eventually gives up.

Any suggestions are welcome.

EDIT I am not exactly sure what might have happened. This is a Cassandra node which was rebooted from within the operating system. The last messages before xfs corruption were those of Cassandra trying to create some directories.

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  • What happened before you submitted this question? It's rare for the OS or XFS to corrupt itself without cause, so can you explain what happened to the system?
    – ewwhite
    Mar 31 '16 at 18:10

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