Advice needed: Rebuild disk or xfs_repair

[MacDaddy]

I'm currently using a docker MakeMKV to write cloned DVD structures in to a MKV container.  I've noticed that a share that I'm using for the output keeps dropping.  I can reboot and the array will start with all drives green and the share is restored.  A snippet from the log is attached.  I can start in maintenance mode and dry run xfs_repair on all the hard drives.  All are clean except md2.

 

Is it better to xfs_repair the md2 drive or replace with new drive and let it rebuild?  Note-while parity shows valid, it has been more than 700 days since last check.

 

Oct 13 18:36:15 Tower kernel: XFS (md2): Metadata CRC error detected at xfs_inobt_read_verify+0xd/0x3a [xfs], xfs_inobt block 0x19f754db8 
Oct 13 18:36:15 Tower kernel: XFS (md2): Unmount and run xfs_repair
Oct 13 18:36:15 Tower kernel: XFS (md2): First 128 bytes of corrupted metadata buffer:
Oct 13 18:36:15 Tower kernel: 0000000095cfb836: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 000000001de8c0f3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 00000000c8d99f19: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 00000000a9a413e7: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 000000003c326670: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 000000005abd08ab: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 000000003867ab1f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: 0000000085cdd1ba: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
Oct 13 18:36:15 Tower kernel: XFS (md2): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x19f754db8 len 8 error 74
Oct 13 18:36:15 Tower kernel: XFS (md2): xfs_do_force_shutdown(0x1) called from line 300 of file fs/xfs/xfs_trans_buf.c.  Return address = 000000007c1ff77b
Oct 13 18:36:15 Tower kernel: XFS (md2): I/O Error Detected. Shutting down filesystem
Oct 13 18:36:15 Tower kernel: XFS (md2): Please umount the filesystem and rectify the problem(s)

 

tower-diagnostics-20201013-2150.zip

[JorgeB]

Parity can't fix filesystem corruption, you need to run xfs_repair.

[MacDaddy]

Thanks for your response. I had a feeling it would go that way. This is my first encounter with corruption.

When I complete the XFS repair it will prune data (according to the dry run output). Is that data lost for good or will unRaid recognize it and let parity reconstruct?


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[JorgeB]

Any partial/lost files will be moved to the lost+found folder, you can then analyze them, again parity can't help with filesystem corruption.