From: Ted Ts'o <tytso@mit.edu>
To: Jon Nelson <jnelson@jamponi.net>
Cc: Matt <jackdachef@gmail.com>, Chris Mason <chris.mason@oracle.com>,
Andi Kleen <andi@firstfloor.org>,
Mike Snitzer <snitzer@redhat.com>, Milan Broz <mbroz@redhat.com>,
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>, htejun <htejun@gmail.com>,
linux-ext4 <linux-ext4@vger.kernel.org>
Subject: Re: hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective)
Date: Sat, 11 Dec 2010 20:40:13 -0500 [thread overview]
Message-ID: <20101212014013.GF3059@thunk.org> (raw)
In-Reply-To: <AANLkTi=cn04WZGMnVX6ie5PSM+9v0tJSSg0kD8_W5N11@mail.gmail.com>
On Fri, Dec 10, 2010 at 08:14:56PM -0600, Jon Nelson wrote:
> > Barring false negatives, bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc
> > appears to be the culprit (according to git bisect).
> > I will test bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc again, confirm
> > the behavior, and work backwards to try to reduce the possibility of
> > false negatives.
>
> A few additional notes, in no particular order:
>
> - For me, triggering the problem is fairly easy when encryption is involved.
> - I'm now 81 iterations into testing
> bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc *without* encryption. Out of
> 81 iterations, I have 4 failures: #16, 40, 62, and 64.
>
> I will now try 1de3e3df917459422cb2aecac440febc8879d410 much more extensively.
>
> Is this useful information?
Yes, indeed. Is this in the virtualized environment or on real
hardware at this point? And how many CPU's do you have configured in
your virtualized environment, and how memory memory? Is having a
certain number of CPU's critical for reproducing the problem? Is
constricting the amount of memory important?
It'll be a lot easier if I can reproduce it locally, which is why I'm
asking all of these questions.
Thanks,
- Ted
next prev parent reply other threads:[~2010-12-12 1:40 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTim6WTCChWGbTb-PUGd2AERGibeRtgan-WDznf2s@mail.gmail.com>
[not found] ` <4CD6B7FA.3050005@redhat.com>
[not found] ` <AANLkTikbsU+SGAaoq_oek=7tfDdjg+0wFoydhA+K9ZU+@mail.gmail.com>
[not found] ` <AANLkTinna7BiGHogXnn1iEG6ccUAjFM3p3S3aHpv=h-E@mail.gmail.com>
[not found] ` <20101107194547.GA12521@basil.fritz.box>
[not found] ` <4CD71C8B.1050604@redhat.com>
[not found] ` <20101107230508.GB17592@basil.fritz.box>
2010-11-08 14:58 ` DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ? Mike Snitzer
2010-11-08 17:59 ` Chris Mason
2010-11-14 20:59 ` dm-crypt barrier support is effective (was: Re: DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ?) Mike Snitzer
2010-11-14 21:49 ` Matt
2010-11-14 21:54 ` dm-crypt barrier support is effective Milan Broz
2010-11-14 23:24 ` Matt
2010-12-01 16:05 ` Matt
2010-12-01 16:52 ` Mike Snitzer
2010-12-01 17:35 ` Matt
2010-12-01 18:24 ` Milan Broz
2010-12-01 19:34 ` Jon Nelson
2010-12-01 20:45 ` Milan Broz
2010-12-01 21:23 ` hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective) Mike Snitzer
2010-12-02 21:30 ` Matt
2010-12-04 19:18 ` Matt
2010-12-04 19:38 ` Mike Snitzer
2010-12-04 23:47 ` Matt
2010-12-07 14:21 ` Chris Mason
2010-12-07 18:10 ` Jon Nelson
2010-12-07 18:10 ` Jon Nelson
2010-12-07 18:15 ` Chris Mason
2010-12-07 18:22 ` Mike Snitzer
2010-12-07 18:45 ` Jon Nelson
2010-12-07 18:52 ` Chris Mason
2010-12-07 19:34 ` Jon Nelson
2010-12-07 20:02 ` Chris Mason
2010-12-07 20:25 ` Jon Nelson
2010-12-07 20:33 ` Chris Mason
2010-12-07 20:36 ` Jon Nelson
2010-12-07 20:41 ` Chris Mason
2010-12-07 20:48 ` Jon Nelson
2010-12-07 21:02 ` Chris Mason
2010-12-08 3:29 ` Jon Nelson
2010-12-08 8:03 ` hunt for 2.6.37 dm-crypt+ext4 corruption? Milan Broz
2010-12-08 12:20 ` hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective) Chris Mason
2010-12-16 3:37 ` Dave Chinner
2010-12-16 12:29 ` Chris Mason
2010-12-08 3:55 ` Jon Nelson
2010-12-07 19:35 ` Ted Ts'o
2010-12-07 21:01 ` Jon Nelson
2010-12-07 21:01 ` Jon Nelson
2010-12-08 3:37 ` Jon Nelson
2010-12-08 3:37 ` Jon Nelson
2010-12-08 15:26 ` Jon Nelson
2010-12-08 15:26 ` Jon Nelson
2010-12-09 18:01 ` Ted Ts'o
2010-12-09 18:10 ` Jon Nelson
2010-12-09 18:10 ` Jon Nelson
2010-12-09 20:13 ` Ted Ts'o
2010-12-09 20:38 ` Jon Nelson
2010-12-09 20:38 ` Jon Nelson
2010-12-09 23:16 ` Andi Kleen
2010-12-10 1:38 ` Chris Mason
2010-12-10 1:53 ` Matt
2010-12-10 2:38 ` Ted Ts'o
2010-12-10 6:52 ` Jon Nelson
2010-12-10 14:58 ` Jon Nelson
2010-12-10 14:58 ` Jon Nelson
2010-12-10 16:54 ` Jon Nelson
2010-12-11 2:14 ` Jon Nelson
2010-12-12 1:40 ` Ted Ts'o [this message]
2010-12-12 2:34 ` Ted Ts'o
2010-12-12 3:16 ` Jon Nelson
2010-12-12 3:16 ` Jon Nelson
2010-12-12 10:18 ` Jon Nelson
2010-12-12 10:18 ` Jon Nelson
2010-12-12 12:43 ` Ted Ts'o
2010-12-12 13:11 ` Jon Nelson
2010-12-13 2:06 ` Ted Ts'o
2010-12-13 18:56 ` Jon Nelson
2010-12-13 18:56 ` Jon Nelson
2010-12-15 19:15 ` Matt
2010-12-15 19:16 ` Andi Kleen
2010-12-15 19:25 ` Matt
2010-12-15 19:28 ` Matt
2010-12-12 13:11 ` Jon Nelson
2010-12-11 2:14 ` Jon Nelson
2010-12-10 16:54 ` Jon Nelson
2010-12-10 6:52 ` Jon Nelson
2010-12-10 1:58 ` Mike Fedyk
2010-12-10 2:00 ` Chris Mason
2010-12-10 2:05 ` Jon Nelson
2010-12-04 23:52 ` Matt
2010-12-05 10:09 ` Heinz Diehl
2010-12-05 10:21 ` hunt for 2.6.37 dm-crypt+ext4 corruption? Milan Broz
2010-12-05 12:49 ` Heinz Diehl
2010-12-05 13:24 ` [dm-devel] " Theodore Tso
2010-12-05 13:44 ` Matt
2010-12-05 14:02 ` Ted Ts'o
2010-12-05 14:33 ` Heinz Diehl
2010-12-05 20:17 ` Daniel J Blueman
2010-12-06 7:08 ` Heinz Diehl
2010-12-05 20:28 ` Andi Kleen
2010-12-05 21:15 ` Mike Snitzer
2010-12-05 21:42 ` [dm-devel] " Milan Broz
2010-12-06 2:37 ` Valdis.Kletnieks
2011-01-06 15:56 ` Heinz Diehl
2011-01-07 16:45 ` Matt
2010-12-05 13:30 ` hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective) Matt
2010-12-05 0:57 ` Matt
2010-12-04 20:51 ` Heinz Diehl
2010-12-01 19:59 ` dm-crypt barrier support is effective Heinz Diehl
2010-11-15 7:25 ` Heinz Diehl
2010-11-15 8:41 ` Milan Broz
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