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Message-ID: <2a12af650703251705x30a05194je1cfece44b2cf45d@mail.gmail.com>
Date: Mon, 26 Mar 2007 03:05:19 +0300
From: "Marti Raudsepp" <marti@juffo.org>
To: "Milan Broz" <mbroz@redhat.com>
Subject: Re: [PATCH] disable barriers in dm-crypt [was Re: BUG: Files corrupt after moving LVM volume to USB disk]
Cc: "Alasdair G Kergon" <agk@redhat.com>,
       "Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>,
       "device-mapper development" <dm-devel@redhat.com>,
       "Kernel hackers" <linux-kernel@vger.kernel.org>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "Christophe Saout" <christophe@saout.de>
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On 3/23/07, Milan Broz <mbroz@redhat.com> wrote:
> Disable barriers in dm-crypt because of current workqueue processing
> can reorder requests.
>
> --- linux-2.6.20.1.orig/drivers/md/dm-crypt.c   2007-03-23 15:07:11.000000000 +0100
> +++ linux-2.6.20.1/drivers/md/dm-crypt.c        2007-03-23 15:09:59.000000000 +0100
> +       if (bio_barrier(bio))
> +               return -EOPNOTSUPP;
> +

Sorry, this doesn't help either. ext3 is still slow, reiserfs still fails.

(And sorry for the double e-mail, I forgot to reply to all)

Marti Raudsepp