From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261890AbULUXOB (ORCPT ); Tue, 21 Dec 2004 18:14:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261892AbULUXOB (ORCPT ); Tue, 21 Dec 2004 18:14:01 -0500 Received: from omx3-ext.sgi.com ([192.48.171.20]:62396 "EHLO omx3.sgi.com") by vger.kernel.org with ESMTP id S261890AbULUXN7 (ORCPT ); Tue, 21 Dec 2004 18:13:59 -0500 Date: Wed, 22 Dec 2004 10:13:37 +1100 From: Nathan Scott To: Joerg Sommrey , Linux kernel mailing list Subject: Re: Oops on 2.6.9-ac16: xfs, dm and md may be involved Message-ID: <20041222101337.C674830@wobbly.melbourne.sgi.com> References: <20041221185754.GA28356@sommrey.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20041221185754.GA28356@sommrey.de>; from jo175@sommrey.de on Tue, Dec 21, 2004 at 07:57:54PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 21, 2004 at 07:57:54PM +0100, Joerg Sommrey wrote: > Hello, > > last night my box died with a kernel oops. There was a backup > running at that time. The setup: > - 2 SATA disks + 1 SCSI disk > - SATA partitions build up md-raid-arrays (level 0 and 1) > - md-raid-devices and SCSI partitions are physical volumes for dm > - dm logical volumes are used for xfs filesystems > - backup is done on dm-snapshots of those filesystems > ... > syslog: > Dec 21 03:28:09 bear kernel: Unable to handle kernel paging request at virtual address 6b6b6b73 Hmm, looks like a memory poisoning pattern there. > Dec 21 03:28:10 bear kernel: EIP: 0060:[__origin_write+112/608] Tainted: P VLI > Dec 21 03:28:10 bear kernel: EFLAGS: 00010217 (2.6.9-ac16) > Dec 21 03:28:10 bear kernel: EIP is at __origin_write+0x70/0x260 > Dec 21 03:28:10 bear kernel: eax: 6b6b6b4b ebx: ccd2f888 ecx: f0f55190 edx: ffffffff > Dec 21 03:28:10 bear kernel: esi: 6b6b6b4b edi: dc1eebd8 ebp: c4593920 esp: f7487d74 > Dec 21 03:28:10 bear kernel: ds: 007b es: 007b ss: 0068 > Dec 21 03:28:10 bear kernel: Process xfsbufd (pid: 849, threadinfo=f7486000 task=c1b9e070) >>From XFS's point of view, we are in the middle of submitting a delayed metadata write down to the driver. Something seems to have gone wrong inside "__origin_write" (dm-snap.c), which looks like its doing snapshot stuff inside device mapper? cheers. -- Nathan