Re: Timeout waiting for /dev/md/imsm0 ?

On 8/17/22 04:04, David F. wrote:

What rules should be used?   I don't see a /dev/md directory, I
created one, stopped the raid (all the /dev/md* devices went away)
and tried to start the raid, same thing and only /dev/md127 gets
created, nothing in /dev/md/ directory and none of the md126 devices ?
  You then get the timeout.

Please check the device-mapper status.

My guess is that device-mapper gets in the way (as it probably will be 
activated from udev, too), and blocks the devices when mdadm is trying 
to access them.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
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