From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pierre Ossman Subject: Re: Strange read data corruption on ext4/LVM/md Date: Thu, 20 May 2010 16:00:49 +0200 Message-ID: <20100520160049.1528772b@mjolnir.ossman.eu> References: <20100519225653.1fedb453@mjolnir.ossman.eu> <20100519230426.47c6c1ed@mjolnir.ossman.eu> <20100519232906.3be82279@mjolnir.ossman.eu> <20100519233408.7436bd9b@mjolnir.ossman.eu> <20100520091429.192d560c@mjolnir.ossman.eu> <4BF4F979.4070903@kernel.org> <20100520112945.61bf9705@mjolnir.ossman.eu> <4BF50405.4070706@kernel.org> <20100520122227.16ea1cbc@mjolnir.ossman.eu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; protocol="application/pgp-signature"; boundary="=_freyr.ossman.eu-5869-1274364051-0001-2" Return-path: Received: from 82-117-125-11.tcdsl.calypso.net ([82.117.125.11]:34587 "EHLO smtp.ossman.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753209Ab0ETOAy (ORCPT ); Thu, 20 May 2010 10:00:54 -0400 In-Reply-To: <20100520122227.16ea1cbc@mjolnir.ossman.eu> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org This is a MIME-formatted message. If you see this text it means that your E-mail software does not support MIME-formatted messages. --=_freyr.ossman.eu-5869-1274364051-0001-2 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 20 May 2010 12:22:27 +0200 Pierre Ossman wrote: >=20 > I've since constructed a script that keeps re-running the above over > all relevant disks and keeps track of how many unique md5 values we > get. It's been running for about 1.5 hours right now, and here are the > results so far: >=20 > sdd - 3, sde - 4, sdf - 1, sdb - 1, sdc - 1,=20 >=20 > sdd and sde are both on the same controller, so the problem you > mentioned could be relevant. >=20 > I'll let the test run for a few more hours and try moving things off > that controller later tonight. >=20 The trend continues and the numbers are now 9 and 8 for sdd and sde and 1 for the others. Rgds --=20 -- Pierre Ossman WARNING: This correspondence is being monitored by FRA, a Swedish intelligence agency. Make sure your server uses encryption for SMTP traffic and consider using PGP for end-to-end encryption. --=_freyr.ossman.eu-5869-1274364051-0001-2 Content-Type: application/pgp-signature; name="signature.asc" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (GNU/Linux) iEYEARECAAYFAkv1QJMACgkQ7b8eESbyJLhZpACg3JozT+SYje+kxZ4+gmCHXlSj DEEAoIPGjarKh4eZU25zM37fj/Pm7Acm =yri/ -----END PGP SIGNATURE----- --=_freyr.ossman.eu-5869-1274364051-0001-2--