From owner-freebsd-stable@FreeBSD.ORG Thu Feb 23 21:33:30 2006 Return-Path: X-Original-To: freebsd-stable@FreeBSD.org Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3684716A420; Thu, 23 Feb 2006 21:33:30 +0000 (GMT) (envelope-from ru@ip.net.ua) Received: from tigra.ip.net.ua (tigra.ip.net.ua [82.193.96.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0C5BE43D49; Thu, 23 Feb 2006 21:33:28 +0000 (GMT) (envelope-from ru@ip.net.ua) Received: from localhost (rocky.ip.net.ua [82.193.96.2]) by tigra.ip.net.ua (8.12.11/8.12.11) with ESMTP id k1NLXRHi015107; Thu, 23 Feb 2006 23:33:27 +0200 (EET) (envelope-from ru@ip.net.ua) Received: from tigra.ip.net.ua ([82.193.96.10]) by localhost (rocky.ip.net.ua [82.193.96.2]) (amavisd-new, port 10024) with LMTP id 02248-04; Thu, 23 Feb 2006 23:32:53 +0200 (EET) Received: from heffalump.ip.net.ua (heffalump.ip.net.ua [82.193.96.213]) by tigra.ip.net.ua (8.12.11/8.12.11) with ESMTP id k1NLUSB8014952 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 23 Feb 2006 23:30:28 +0200 (EET) (envelope-from ru@ip.net.ua) Received: (from ru@localhost) by heffalump.ip.net.ua (8.13.4/8.13.4) id k1NLUaaM078396; Thu, 23 Feb 2006 23:30:36 +0200 (EET) (envelope-from ru) Date: Thu, 23 Feb 2006 23:30:36 +0200 From: Ruslan Ermilov To: Michael Reifenberger Message-ID: <20060223213036.GD47860@ip.net.ua> References: <20060223131549.V38816@fw.reifenberger.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="WfZ7S8PLGjBY9Voh" Content-Disposition: inline In-Reply-To: <20060223131549.V38816@fw.reifenberger.com> User-Agent: Mutt/1.5.11 X-Virus-Scanned: amavisd-new at ip.net.ua Cc: FreeBSD Stable , pjd@FreeBSD.org Subject: Re: graid3 data corruption?!? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Feb 2006 21:33:30 -0000 --WfZ7S8PLGjBY9Voh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Feb 23, 2006 at 01:31:16PM +0100, Michael Reifenberger wrote: > Hi, > I'm having 5 firewire Disks in one graid3 set. > and using a fresh STABLE on SMP with an dual AMD64 in i386 mode. >=20 > While doing an md5 checksum of all files in the filesystem > (~770GB of data) on disk died. graid3 did the right thing > and disconnected the disk. >=20 > BUT: > after diffing the md5sums of the files on large file (probably the one > that got checked during the disk failure) had an different md5sum than=20 > before. > --- md5_11.log Fri Dec 9 13:23:07 2005 > +++ md5_12.log Wed Feb 22 18:03:03 2006 > @@ -4460,3 +4460,3 @@ > MD5 (Backup/totum/root_0_050211_i386.dmp.gz) =3D=20 > 5a3e7b03f48ea4c2cba10624edd996cf > -MD5 (Backup/totum/root_0_050715.dmp.gz) =3D 0e154301cbec84571d1df94bf68e= 3d79 > +MD5 (Backup/totum/root_0_050715.dmp.gz) =3D 172d7c12b78f3f191c184d467e31= a53c > MD5 (RIP/.pgp/PGPMacBinaryMappings.txt) =3D bf1b637a3a69bcbb8d4177be46a1= c3ac >=20 > BUT: > doing a fresh md5sum now in degraded mode of the file I get again > (the correct) value of: > MD5 (Backup/totum/root_0_050715.dmp.gz) =3D 0e154301cbec84571d1df94bf68e3= d79 >=20 > For me this means, that graid3 gave incorrect data during the disk los. > This shouldn't happen! >=20 > Any clues how this could happen? > Has anyone else seen this behaviour? >=20 Yes, we saw it too. We hope that the last commit to g_raid3.c (in HEAD) may fix it as well. Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --WfZ7S8PLGjBY9Voh Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFD/il8qRfpzJluFF4RArXVAJ9p8mFSnsapicRYlcU+mD8RwokGIgCeLja4 dhqpDRT2WnUw+Bh3tynszyQ= =WIjj -----END PGP SIGNATURE----- --WfZ7S8PLGjBY9Voh--