From: Paul Slootman <paul+nospam@wurtel.net>
Subject: Re: [dm-crypt] dm-crypt is broken and causes massive data corruption
Date: Thu, 11 May 2006 15:15:29 +0000 (UTC)
Organization: Wurtelization
Message-ID: <e3vkeh$12h$1@news.cistron.nl>
References: <445F7DCC.2000508@igd.fraunhofer.de> <20060509190457.GL16180@agk.surrey.redhat.com>
To: linux-kernel@vger.kernel.org
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1066
Lines: 24

Alasdair G Kergon  <agk@redhat.com> wrote:
>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.

>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.

A data point:

I'm running my /home on reiserfs3 over dm-crypt over lvm over raid5 for
at least a year now, without any problems. Currently running 2.6.13.4
(that's my "stable" work system...).


Paul Slootman

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/