Felix Blyakher wrote:
> This is an IO error. Is the block device (/dev/sde) accessible
> from the server #2 OK? Can you dd from that device?

Interesting suggestion; I don't recall having seen any indication of IO errors, but I'm testing again this evening, and will report back on what I find with dd.

> That's not a good time to run xfs_repair. There were no
> indication that the filesystem is corrupted.

Interesting again.  I ran the tool merely because I had no other recourse to remedy this.

> Let's take for a sec "NFS server #2" out of the picture.
> Can you mount the filesystem from the original server
> after it reboots?

This has been tested and fails, so it does appear to be a corruption issue on the stable media.  Based on your first comment, I'm re-running tests to verify that the ISCSI volumes are fully online and ready to accept IO before mounting the file system.

Thank you very much.

- John Quigley

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