From: Neil Brown <neilb@suse.de>
To: Erich Newell <erich.newell@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Cannot re-assemble Degraded RAID6 after crash
Date: Tue, 18 Dec 2007 14:09:32 +1100 [thread overview]
Message-ID: <18279.14828.345584.52508@notabene.brown> (raw)
In-Reply-To: message from Erich Newell on Monday December 17
On Monday December 17, erich.newell@gmail.com wrote:
> My system has crashed a couple of times, each time the two drives have
> dropped off of the RAID.
>
> Previously I simply did the following, which would take all night:
>
> mdadm -a --re-add /dev/md2 /dev/sde3
> mdadm -a --re-add /dev/md2 /dev/sdf3
> mdadm -a --re-add /dev/md3 /dev/sde5
> mdadm -a --re-add /dev/md3 /dev/sde5
>
> When I woke up in the morning, everything was happy...until it crashed
> again yesterday. This time, I get a message: "/dev/md3 assembled from
> 4 drives - not enough to start the array while not clean - consider
> --force."
>
> I can re-assemble /dev/md3 (sda5, sdb5, sdc5, sdd5, sde5 and sdf5) if
> I use -f, although all the other sets seem fine. I cannot "--re-add"
> the other partitions.
What happens when you try to re-add those devices?
How about just "--add". --re-add is only need for arrays without
metadata, in your case it should behave the same as --add.
NeilBrown
prev parent reply other threads:[~2007-12-18 3:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-18 2:40 Cannot re-assemble Degraded RAID6 after crash Erich Newell
2007-12-18 3:09 ` Neil Brown [this message]
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