Date: Sun, 7 Nov 2010 21:36:37 +0100
From: Heinz Diehl <htd@fritha.org>
To: Matt <jackdachef@gmail.com>
Cc: Milan Broz <mbroz@redhat.com>, Andi Kleen <andi@firstfloor.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>, dm-devel@redhat.com,
        htd@fancy-poultry.org
Subject: Re: [PATCH] DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ?
Message-ID: <20101107203637.GA12615@fritha.org>
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On 07.11.2010, Matt wrote: 

> noatime,nodiratime,barrier=1

One of my systems runs a squid webcache and has a lot of disk load,
and I've never seen data loss or corruption, all the way up from 2.6.34 to
the latest -git.

(Btw: "noatime" superseeds "nodiratime", you can therefore drop it when
"noatime" is set.)

> I read about barrier-problems and data getting to the partition when
> using dm-crypt and several layers so I don't know if that could be
> related

I would rather guess that you have filesystem / harddisk problems,
but I must admit I've never mounted one of my filesystems with barriers
enabled (I use XFS exclusively).

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