From: Alasdair G Kergon <agk@redhat.com>
To: Tillmann Steinbrecher <tsteinbr@igd.fraunhofer.de>
Cc: linux-kernel@vger.kernel.org, dm-crypt@saout.de
Subject: Re: [dm-crypt] dm-crypt is broken and causes massive data corruption
Date: Tue, 9 May 2006 20:04:57 +0100 [thread overview]
Message-ID: <20060509190457.GL16180@agk.surrey.redhat.com> (raw)
In-Reply-To: <445F7DCC.2000508@igd.fraunhofer.de>
On Mon, May 08, 2006 at 07:20:12PM +0200, Tillmann Steinbrecher wrote:
> it's been many months that dm-crypt has been broken, and is known to
> cause massive data corruption.
> Various people have noticed this, have lost data and wasted many hours
> trying to find the reason, and still NOTHING is being done about it.
Perhaps that's because it wasn't until last week that the upstream
maintainers heard of these problems?
So far there isn't much in the way of controlled experiments, but:
All the reports agree the problem is independent of filesystem.
One thread suggests only filesystem metadata is corrupted, not file
data, and wonders if something's going wrong with (unsupported) write
barriers.
Another report said dm-crypt over raid5 failed while raid5
over dm-crypt worked.
Alasdair
--
agk@redhat.com
next prev parent reply other threads:[~2006-05-09 19:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-08 17:20 Tillmann Steinbrecher
2006-05-08 17:57 ` [dm-crypt] " Simpson, Brett
2006-05-08 18:27 ` Christophe Saout
2006-05-09 19:04 ` Alasdair G Kergon [this message]
2006-05-11 15:15 ` Paul Slootman
2006-05-11 15:42 ` Andrea Gelmini
2006-05-11 23:17 ` Christian Schmidt
2006-05-12 21:47 ` Dan Merillat
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