Received: with ECARTIS (v1.0.0; list linux-xfs); Tue, 09 Aug 2005 23:59:35 -0700 (PDT) Received: from twinlark.arctic.org (twinlark.arctic.org [207.7.145.18]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id j7A6xUH9005530 for ; Tue, 9 Aug 2005 23:59:30 -0700 Received: (qmail 9273 invoked from network); 10 Aug 2005 06:57:21 -0000 Received: from unknown (HELO localhost) (127.0.0.1) by 127.0.0.1 with ESMTPS (AES256-SHA); 10 Aug 2005 06:57:21 -0000 Date: Tue, 9 Aug 2005 23:57:21 -0700 (PDT) From: dean gaudet To: "Tang Lingbo (Allan)" cc: linux-xfs@oss.sgi.com Subject: Re: XFS report error on LVM snapshot In-Reply-To: <003d01c59d62$70c59540$0209010a@winauth.cn.mvd> Message-ID: References: <003d01c59d62$70c59540$0209010a@winauth.cn.mvd> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-archive-position: 5766 X-ecartis-version: Ecartis v1.0.0 Sender: linux-xfs-bounce@oss.sgi.com Errors-to: linux-xfs-bounce@oss.sgi.com X-original-sender: dean-list-linux-xfs@arctic.org Precedence: bulk X-list: linux-xfs Status: O Content-Length: 1053 Lines: 32 On Wed, 10 Aug 2005, Tang Lingbo (Allan) wrote: > Hi, > > I get error message when I try to use LVM snapshot with XFS. > > === error message === > XFS mounting filesystem lvm(58,4) > Ending clean XFS mount for filesystem: lvm(58,4) > lvm - lvm_map: ll_rw_blk write for readonly LV /dev/vg0/test21 > xfs_force_shutdown(lvm(58,4),0x1) called from line 353 of file xfs_rw.c. > Return address = 0xc026ad2b > Filesystem "lvm(58,4)": I/O Error Detected. Shutting down filesystem: > lvm(58,4) > Please umount the filesystem, and rectify the problem(s) > XFS mounting filesystem lvm(58,4) > Ending clean XFS mount for filesystem: lvm(58,4) > > =================== yeah this is the same thing i reported in bugzilla: http://oss.sgi.com/bugzilla/show_bug.cgi?id=413 unfortunately i've found xfs+snapshots to be completely unusable on any filesystem with non-trivial workload -- no data corruption (yet), but the snapshot fails regularly. see also: http://oss.sgi.com/bugzilla/show_bug.cgi?id=412 http://oss.sgi.com/bugzilla/show_bug.cgi?id=414 -dean