From: hpa@zytor.com (H. Peter Anvin)
To: linux-raid@vger.kernel.org
Subject: Re: RAID-6 corruption
Date: Fri, 30 Jul 2004 15:47:21 +0000 (UTC) [thread overview]
Message-ID: <cedqi9$nh$1@terminus.zytor.com> (raw)
In-Reply-To: 20040729212046.GA27332@jim.sh
Followup to: <20040729212046.GA27332@jim.sh>
By author: Jim Paris <jim@jtan.com>
In newsgroup: linux.dev.raid
>
> Hello,
>
> (I've posted some messages about this to linux-raid, but haven't
> gotten much of a response; this time I'm cc'ing to linux-kernel)
>
I haven't seen any of those messages, so this is the first case happening.
> I am seeing reproducible corruption with software RAID-6 on an array
> that has been created with missing disks. The attached script
> demonstrates this easily through loopback devices, but I see the
> problem just the same on real drives.
>
> I do not see the problem with full RAID-6 arrays (no missing disks),
> nor do I see it on RAID-5 arrays on the same system. I haven't seen
> the corruption when writing directly to the md device, but I haven't
> tested that very much.
>
> Tested on 2.6.6, 2.6.7, 2.6.8-rc2, with mdadm 1.5.0 and 1.6.0.
> See attached.
I will look at it.
-hpa
prev parent reply other threads:[~2004-07-30 15:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-29 21:20 RAID-6 corruption Jim Paris
2004-07-30 15:47 ` H. Peter Anvin [this message]
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