[Neil Brown]
I probably wouldn't have helped. It is supposed to write backup
stuff to the spares and if it didn't do that, it probably wouldn't
have written it to a file either.
Right. Is this a bug or the way it is supposed to work?
The easiest fix for now is to recreate the array.
mdadm -CR /dev/md3 --metadata=0.90 -n3 -l5 -c64 /dev/sdb2 /dev/sdc2
/dev/sdf2 --assume-clean
should do it.
Thank you. How did you determine which devices to use and which order
to list them in? I've since rebooted and want to make sure I do not
pick the wrong devices.
Then if that looks good, add the extra devices and grow the array
again.
Will try when md2 is done growing tomorrow. :)
Happy hacking,
--
Petter Reinholdtsen