On 22/04/2011 15:49, Raphael Müller wrote:
last week i tried to grow my raid 5 with 4 disks to a raid 6 with 5
disks. accidentialy i dropped the powersource and the resync process
stopped.
i could start the nas with a rescue stick, but i still wasnt' able to
complete the resync. there are some output from different commands
(examine and assemble tries)
i'm very confused, because there stands active sync, but raid 6 and i
think since it was very at the beginning, there was no data changed on
the 4 raid 5 disks.
what should i do? and is it possible to rebuild this array? luckily i
have somewhere around 90% of the data backed up on another nas.
The end of the assemble output has the answer:
mdadm:/dev/md1 has an active reshape - checking if critical section needs to be restored
mdadm: Failed to find backup of critical section
mdadm: Failed to restore critical section for reshape, sorry.
Possibly you needed to specify the --backup-file
You need to manually re-issue the assemble command, and specify the
--backup-file you gave when you started the --grow. That should get the
array assembled and the reshape running again.
Cheers,
John.
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