Re: request for help on IMSM-metadata RAID-5 array

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On Sat, 23 Sep 2023 12:54:52 +0200
Joel Parthemore <joel@xxxxxxxxxxxxxxx> wrote:

> the RAID array looking seemingly okay (according to mdadm -D) BUT this 
> time, any attempt to access the RAID array or even just stop the array 
> (mdadm --stop /dev/md126, mdadm --stop /dev/md127) once it was started 
> would cause the RAID array to lock up. That means (I think) that I can't 
> create an image of the array contents using dd, which is what -- of 
> course -- I should have done in the first place. (I could assemble the 
> RAID array read-only, but the RAID array is out of sync because it 
> didn't shut down properly.)

Does accessing the array also lock up when it's assembled read-only?

The out-of-sync should not be a great issue, because only a tiny portion that
was being written at the time of crash would be out of sync. The rest should be
fine, and you could try backing up your important data.

If #1 is yes, then try a different distro with a newer kernel version.

-- 
With respect,
Roman



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