From: Neil Brown <neilb@suse.de>
To: Michael Li <michael.li@netgear.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: RAID10 status when you remove the first disk and last disk
Date: Wed, 21 Jul 2010 13:06:50 +1000 [thread overview]
Message-ID: <20100721130650.3b23b960@notabene> (raw)
In-Reply-To: <F03AFE7E8C7E644392BE79B102C8B5A50489FCD5@MAIL3.netgear.com>
On Tue, 20 Jul 2010 19:34:06 -0700
"Michael Li" <michael.li@netgear.com> wrote:
> Hi ,
>
>
>
> I am using RAID10 far copy 2 by 4 disks, when I removed the first disk
> and last disk, I think this raid should be failed, but mdadm -D
> /dev/md2, I saw it was degraded, but when I try to read/write, there
> will be I/O error. And when I added the two disks again, the raid will
> be recovery, so that's normal? why it is designed like this?
>
>
>
> Anyone know the detail about that? Thanks so much!
>
Sounds like a bug. You have definitely lost data if the first and last
devices of such an array go missing, so it should not try to recover a spare
in to either slot.
What kernel version are you using?
NeilBrown
next parent reply other threads:[~2010-07-21 3:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <F03AFE7E8C7E644392BE79B102C8B5A50489FCD5@MAIL3.netgear.com>
2010-07-21 3:06 ` Neil Brown [this message]
2010-07-21 5:36 ` RAID10 status when you remove the first disk and last disk Michael Li
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