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Message-ID: <4A707F85.5090008@redhat.com>
Date: Wed, 29 Jul 2009 18:57:41 +0200
From: Milan Broz <mbroz@...hat.com>
To: Paul Clements <paul.clements@...eleye.com>
CC: linux-raid@...r.kernel.org, Neil Brown <neilb@...e.de>,
kernel list <linux-kernel@...r.kernel.org>,
ian.campbell@...rix.com
Subject: Re: [BUG] raid1 behind writes alter bio structure illegally
Hi Paul,
Paul Clements wrote:
> I've run into this bug on a 2.6.18 kernel, but I think the fix is still
> applicable to the latest kernels (even though the symptoms would be
> slightly different).
>
> Perhaps someone who knows the block and/or SCSI layers well can comment
> on the legality of attaching new pages to a bio without fixing up the
> internal bio counters (details below)?
> LVM over raid1 over SCSI/nbd
Please can you try that backporting of this patch helps?
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5d84070ee0a433620c57e85dac7f82faaec5fbb3
(If so, see https://bugzilla.redhat.com/show_bug.cgi?id=512387)
Milan
--
mbroz@...hat.com
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