From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Wed, 26 Mar 2008 06:47:08 -0700 (PDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.168.28]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m2QDkvuS011487 for ; Wed, 26 Mar 2008 06:46:58 -0700 Received: from mx1.wp.pl (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 3C79EBF18C2 for ; Wed, 26 Mar 2008 06:47:31 -0700 (PDT) Received: from mx1.wp.pl (mx1.wp.pl [212.77.101.5]) by cuda.sgi.com with ESMTP id Z5jnpzhviz4nOVYY for ; Wed, 26 Mar 2008 06:47:31 -0700 (PDT) From: Stanislaw Gruszka Subject: Re: BUG: xfs on linux lvm - lvconvert random hungs when doing i/o Date: Wed, 26 Mar 2008 15:02:19 +0100 References: <200803211520.16398.stf_xl@wp.pl> <20080324233952.GF103491721@sgi.com> <20080325020223.GB108924158@sgi.com> In-Reply-To: <20080325020223.GB108924158@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803261502.19930.stf_xl@wp.pl> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: David Chinner Cc: xfs@oss.sgi.com On Tuesday 25 March 2008, David Chinner wrote: > That points to I/O not completing (not an XFS problem at all), or > the filesystem freeze is just taking a long time to run (as it has > to sync everything to disk). Given that this is a snapshot target, > writing new blocks will take quite some time. Is the system still > making writeback progress when in this state, or is it really hung? That is real deadlock, operations which normally takes few minutes, hangs for few hours until I restart machine. This bug is very strange because I can't catch it with more verbose debug and tracing options, I did more tests without debugging options and looks that version from sgi cvs (2.6.25-rc3) works well. I did also test with two patches you suggest, applied (with some troubles) for 2.6.24.2, but finally things hung after 2 days - better than without patches, as you expected. So, looks things are fixed in sgi cvs repository. Don't know if these are xfs or other subsystem (device-mapper?) fixes, anyway I can't reproduce bug on this version, that's good news, I think. > > Cheers, > > Dave. Thanks Stanislaw Gruszka