Dear Chris,

In message [ref] you wrote:

Yes, it sounds reproducible on more than one array, more than one HBA. Is it also more than one computer also, Wolfgang?

Correct, these are 3 different machines.

I think regression is going to be needed to find it. Hopefully the
problem is restricted to parity computation and data chunks aren't
affected; however if a URE occurs in a data chunk, it could be
reconstructed incorrectly from bad parity so it's obviously still a
big problem.

My gut feeling is that the data are still OK, but I have to admit that
I inspected only a small fraction of the files, and I would like to
avoid restoring the data from backup tapes to another system as long
as possible.  So it indeed appears to me as if we had a sotware issue,
computing incorrect parity data.

Best regards,

Wolfgang Denk

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