From: "H. Peter Anvin" <hpa@zytor.com>
To: Mickael Marchand <mikmak@freenux.org>
Cc: linux-raid@vger.kernel.org
Subject: Re: strange raid6 assembly problem
Date: Thu, 24 Aug 2006 10:10:47 -0700 [thread overview]
Message-ID: <44EDDD97.60303@zytor.com> (raw)
In-Reply-To: <20060824123126.GP4670@kyu.freenux.org>
Mickael Marchand wrote:
>
> so basically I don't really know what to do with my sdf3 at the moment
> and fear to reboot again :o)
> maybe a --re-add /dev/sdf3 could work here ? but will it survive a
> reboot ?
>
At this point, for whatever reason, your kernel doesn't see /dev/sdf3 as
part of the array.
You could mdadm --add it, and yes, it should survive a reboot. Unless
something is seriously goofy, of course, but that's impossible to
determine from your trouble report.
A RAID-6 in two-disk degraded mode often ends up needing two recovery
passes (one to go from 2->1 and one from 1->0). This isn't a technical
need, but is a result of the fact that unless you happen to have two
hotspares standing by, the 2->1 recovery typically will have started by
the time second disk is added. This may be the source of your strangeness.
-hpa
prev parent reply other threads:[~2006-08-24 17:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-24 12:31 strange raid6 assembly problem Mickael Marchand
2006-08-24 17:10 ` H. Peter Anvin [this message]
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