From: Chris Mason <chris.mason@oracle.com>
Subject: Re: hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective)
Date: Thu, 09 Dec 2010 21:00:07 -0500
Message-ID: <1291946360-sup-154@think>
References: <AANLkTin3A_ySn_sZQPqZMn-NORnteQZwTVVSiW_=r3sO@mail.gmail.com> <20101207142145.GA27861@think> <AANLkTikJt-ZOmzj68Jw92rjGHzu0EP-uCVD+eNSO=vGd@mail.gmail.com> <20101207182243.GB21112@redhat.com> <20101207193514.GA2921@thunk.org> <AANLkTim8UTkfxXV0AkEfjNq3tcmnrXdh6BQ1ibY5iYPy@mail.gmail.com> <20101209180111.GF2921@thunk.org> <AANLkTimAUB5L5Ptm4Fv=sQUmL9_P5azPRCKQnmU89xs8@mail.gmail.com> <20101209201359.GG2921@thunk.org> <AANLkTik=ivDrBEzg1wQAp5AFzNtRRq1=NpvnowggU=_0@mail.gmail.com> <20101209231616.GA12515@basil.fritz.box> <1291945065-sup-1838@think> <AANLkTimXznTKJAk7NAQPJC1op8iozsRCT5CHYm72hkkq@mail.gmail.com>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=ISO-8859-1
Content-Transfer-Encoding: QUOTED-PRINTABLE
Cc: Andi Kleen <andi@firstfloor.org>, Jon Nelson <jnelson@jamponi.net>,
	"Ted Ts'o" <tytso@mit.edu>, Mike Snitzer <snitzer@redhat.com>,
	Matt <jackdachef@gmail.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>
To: Mike Fedyk <mfedyk@mikefedyk.com>
Return-path: <linux-ext4-owner@vger.kernel.org>
Received: from rcsinet10.oracle.com ([148.87.113.121]:27613 "EHLO
	rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1754080Ab0LJCEh (ORCPT
	<rfc822;linux-ext4@vger.kernel.org>); Thu, 9 Dec 2010 21:04:37 -0500
In-reply-to: <AANLkTimXznTKJAk7NAQPJC1op8iozsRCT5CHYm72hkkq@mail.gmail.com>
Sender: linux-ext4-owner@vger.kernel.org
List-ID: <linux-ext4.vger.kernel.org>

Excerpts from Mike Fedyk's message of 2010-12-09 20:58:40 -0500:
> On Thu, Dec 9, 2010 at 5:38 PM, Chris Mason <chris.mason@oracle.com> =
wrote:
> > Excerpts from Andi Kleen's message of 2010-12-09 18:16:16 -0500:
> >> > 512MB.
> >> >
> >> > 'free' reports 75MB, 419MB free.
> >> >
> >> > I originally noticed the problem on really real hardware (thinkp=
ad
> >> > T61p), however.
> >>
> >> If you can easily reproduce it could you try a git bisect?
> >
> > Do we have a known good kernel? =C2=A0I looked back through the thr=
ead and
> > didn't see any reports where the postgres test on ext4 passed in th=
is
> > config.
> >
>=20
> 2.6.34.something.  -- Any chance a newer kernel can be tested to be f=
ound good?

But he is triggering the ext4 corruption without dm-crypt.  I think
dm-crypt was still used somewhere on the system during the test, just
not on the partitions that actually hit the corruption.

-chris
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" i=
n
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html