linux-kernel - Re: [dm-devel] hunt for 2.6.37 dm-crypt+ext4 corruption?

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Date:	Sun, 05 Dec 2010 22:42:07 +0100
From:	Milan Broz <mbroz@...hat.com>
To:	device-mapper development <dm-devel@...hat.com>
CC:	Andi Kleen <andi@...stfloor.org>, Theodore Tso <tytso@....EDU>,
	Jon Nelson <jnelson@...poni.net>, htejun@...il.com,
	Mike Snitzer <snitzer@...hat.com>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Matt <jackdachef@...il.com>, htd <htd@...cy-poultry.org>,
	Heinz Diehl <htd@...tha.org>, linux-ext4@...r.kernel.org,
	Chris Mason <chris.mason@...cle.com>
Subject: Re: [dm-devel] hunt for 2.6.37 dm-crypt+ext4 corruption?

On 12/05/2010 09:28 PM, Andi Kleen wrote:
>> I've been using a kernel which is between 2.6.37-rc2 and -rc3 with
>> a LUKS / dm-crypt / LVM / ext4 setup for my primary file systems,
>> and I haven't observed any corruption for the last two weeks or so.
>> It's on my todo list to upgrade to top of Linus's tree, but perhaps
>> this is a useful data point.
> 
> The reported corruptions are with a .37 forward port someone did of
> my parallel kcryptd patch.  The 2.6.36 (and earlier) versions are
> rock solid with many users.

ok, to not confuse which patch version people are testing,
let's use the version in Alasdair's DM repo now (upstream queue):
http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/dm-crypt-scale-to-multiple-CPUs.patch
(it should be the same as v5/v6 here on dm-devel -
Andi's patch + my changes for device stacking deadlock)

The same patch (just with minor define fix) is reported rock solid for 2.6.36.

Milan
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