From: Heinz Diehl <htd@fritha.org>
Subject: Re: hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt
 barrier support is effective)
Date: Sun, 5 Dec 2010 11:09:54 +0100
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Cc: Mike Snitzer <snitzer@redhat.com>, Milan Broz <mbroz@redhat.com>,
	Andi Kleen <andi@firstfloor.org>,
	linux-btrfs <linux-btrfs@vger.kernel.org>,
	dm-devel <dm-devel@redhat.com>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	htd <htd@fancy-poultry.org>,
	Chris Mason <chris.mason@oracle.com>, htejun@gmail.com,
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To: Matt <jackdachef@gmail.com>
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On 05.12.2010, Matt wrote: 

> I should have made it clear that the results I get are observed when
> using the kernels/checkouts *with* the dm-crypt multi-cpu patch,
> without the patch I didn't see that kind of problems (hardlocks, files
> missing, etc.)

I have to take back my other two emails, stating that no corruption
happened with the dm-crypt multi-cpu patch. Today, I encountered
filesystem corruption on one, and a complete hardlock on another machine.
No logfile entries, no m-sysrq, a complete deadlock. Filesystem was
corrupted here too, had to reboot from CD.

The machines with plain 2.6.37-rc4 are up and running...