Subject: Re: raidframe copyback blocks the whole system !?
To: None <firstname.lastname@example.org>
From: Greg Oster <email@example.com>
Date: 06/23/2002 20:07:09
Markus W Kilbinger writes:
> After simulating (raidctl -F) a disk failure of a 4 disk raid5 (3 + 1
> spare), the spare disk got in 'used_spare' state and the whole raid
> was still usable under the 'reconstructing' phase. Fine!
> But what's the smooth way (== the system is still usable during that
> time) back? 'raidctl -B' did the job, but blocks the whole system for
> the complete copyback time!
It blocks the filesystem(s) on the RAID set... Unfortunatly, this is a
limitation of the copyback code.
> Trying it with 'raidctl -R ...', while the
> spare is in use, reconstructed the formerly failed disk smoothly, but
> left the spare disk in 'used_spare' state.
Hmm!! It really shouldn't be letting you do a 'raidctl -R' after you've
already reconstructed to a spare... smells like a bug..
> If this blocking is not avoidable you have to really care about _when_
> doing it with a production server! ;-)