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Message-Id: <1174768043.13793.3.camel@localhost>
Date: Sat, 24 Mar 2007 21:27:23 +0100
From: Kasper Sandberg <lkml@...anurb.dk>
To: Christoph Maier <lists@...istoph-maier.de>
Cc: jckn@....net, linux-kernel@...r.kernel.org
Subject: Re: race condition in dm-crypt?
On Fri, 2007-03-23 at 21:41 +0100, Christoph Maier wrote:
> Jan C. Nordholz wrote:
> > I think I'm experiencing a race condition: Irregularly my kernel runs
> > into an Oops when it tries to initialize my crypt containers.
>
> FYI, there are similiar reports on the net, going as far back as May 2006:
> http://article.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/1636
> is the oldest one I could find.
>
> Bugzilla entry: http://bugzilla.kernel.org/show_bug.cgi?id=7388
>
> I, too, ran into the bug and failed to reproduce it. However, it might
> be worth knowing that the system went to 100% iowait afterwards.
Very interresting actually. I myself run dm-crypt and somewhat regularly
my io stops for 5-10 seconds, with seemingly no errors or high load, io
just stalls, and then returns after a while.
>
> Regards, Christoph Maier
>
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