Date: Tue, 9 Nov 2010 15:11:42 +0000 From: Bruce Cran <bruce@cran.org.uk> To: freebsd-fs@freebsd.org Subject: Fwd: Re: Corruption of UFS filesystems after using md(4) Message-ID: <201011091511.42902.bruce@cran.org.uk>
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--Boundary-00=_uSW2MSQc6oN+6RL Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I'm forwarding this because I guess someone from fs@ might be interested. It seems creating sparse files now causes UFS filesystems to become corrupt on CURRENT. -- Bruce Cran --Boundary-00=_uSW2MSQc6oN+6RL Content-Type: message/rfc822; name="forwarded message" Content-Transfer-Encoding: 7bit Content-Description: Peter Holm <pho@freebsd.org>: Re: Corruption of UFS filesystems after using md(4) Content-Disposition: inline Return-Path: <owner-freebsd-current@freebsd.org> X-Original-To: bruce@cran.org.uk Delivered-To: brucec@muon.cran.org.uk Received: from muon.cran.org.uk (localhost [127.0.0.1]) by muon.cran.org.uk (Postfix) with ESMTP id AFD0DE7207 for <bruce@cran.org.uk>; Wed, 3 Nov 2010 07:16:07 +0000 (GMT) X-Spam-Flag: NO X-Spam-Score: -1.911 X-Spam-Level: X-Spam-Status: No, score=-1.911 tagged_above=-999 required=10 tests=[BAYES_00=-1.9, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham Received: from mx2.freebsd.org (mx2.freebsd.org [IPv6:2001:4f8:fff6::35]) by muon.cran.org.uk (Postfix) with ESMTP for <bruce@cran.org.uk>; Wed, 3 Nov 2010 07:16:06 +0000 (GMT) Received: from hub.freebsd.org (hub.freebsd.org [IPv6:2001:4f8:fff6::36]) by mx2.freebsd.org (Postfix) with ESMTP id 107A6178D32; Wed, 3 Nov 2010 07:15:54 +0000 (UTC) Received: from hub.freebsd.org (localhost [127.0.0.1]) by hub.freebsd.org (Postfix) with ESMTP id 2876C1065780; Wed, 3 Nov 2010 07:15:52 +0000 (UTC) (envelope-from owner-freebsd-current@freebsd.org) Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6AC061065670 for <freebsd-current@freebsd.org>; Wed, 3 Nov 2010 07:15:46 +0000 (UTC) (envelope-from pho@holm.cc) Received: from relay00.pair.com (relay00.pair.com [209.68.5.9]) by mx1.freebsd.org (Postfix) with SMTP id 1B4648FC17 for <freebsd-current@freebsd.org>; Wed, 3 Nov 2010 07:15:46 +0000 (UTC) Received: (qmail 82243 invoked from network); 3 Nov 2010 06:49:05 -0000 Received: from 93.166.52.54 (HELO x2.osted.lan) (93.166.52.54) by relay00.pair.com with SMTP; 3 Nov 2010 06:49:05 -0000 X-pair-Authenticated: 93.166.52.54 Received: from x2.osted.lan (localhost [127.0.0.1]) by x2.osted.lan (8.14.3/8.14.3) with ESMTP id oA36n5Xg039844; Wed, 3 Nov 2010 07:49:05 +0100 (CET) (envelope-from pho@x2.osted.lan) Received: (from pho@localhost) by x2.osted.lan (8.14.3/8.14.3/Submit) id oA36n5SE039843; Wed, 3 Nov 2010 07:49:05 +0100 (CET) (envelope-from pho) Date: Wed, 3 Nov 2010 07:49:04 +0100 From: Peter Holm <pho@freebsd.org> To: Bruce Cran <bruce@cran.org.uk> Message-ID: <20101103064904.GA39407@x2.osted.lan> References: <201011021912.14281.bruce@cran.org.uk> <201011021933.51052.bruce@cran.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201011021933.51052.bruce@cran.org.uk> User-Agent: Mutt/1.4.2.3i Cc: freebsd-current@freebsd.org Subject: Re: Corruption of UFS filesystems after using md(4) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current <freebsd-current.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>; List-Post: <mailto:freebsd-current@freebsd.org> List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, <mailto:freebsd-current-request@freebsd.org?subject=subscribe> Sender: owner-freebsd-current@freebsd.org Errors-To: owner-freebsd-current@freebsd.org X-UID: 38219 X-Length: 5168 On Tue, Nov 02, 2010 at 07:33:50PM +0000, Bruce Cran wrote: > On Tuesday 02 November 2010 19:12:14 Bruce Cran wrote: > > I've noticed in recent months that I appear to be getting silent corruption > > of my UFS filesystems - and I think it may be linked to using md(4) or > > creating sparse files. > > I've confirmed this is a UFS bug related to sparse files: "truncate -s20G f1 > && rm f1" is enough to trigger the error and start generating .viminfo files > that appear to be 20GB. When running fsck I get an "Invalid block count" error > if I just reboot without removing the .viminfo file; if I do remove it, I get > a "Partially allocated inode" error. > I'm able to verify this by: "m.sh" 49L, 1917C written $ ./m.sh Local config: x4 + mdconfig -a -t swap -s 1g -u 5 + bsdlabel -w md5 auto + newfs -U md5a + mount /dev/md5a /mnt + truncate -s20G /mnt/f1 + rm /mnt/f1 + umount /mnt + fsck -t ufs -y /dev/md5a ** /dev/md5a ** Last Mounted on /mnt ** Phase 1 - Check Blocks and Sizes PARTIALLY ALLOCATED INODE I=4 UNEXPECTED SOFT UPDATE INCONSISTENCY CLEAR? yes ** Phase 2 - Check Pathnames ** Phase 3 - Check Connectivity ** Phase 4 - Check Reference Counts ** Phase 5 - Check Cyl groups FREE BLK COUNT(S) WRONG IN SUPERBLK SALVAGE? yes SUMMARY INFORMATION BAD SALVAGE? yes BLK(S) MISSING IN BIT MAPS SALVAGE? yes 2 files, 2 used, 506481 free (25 frags, 63307 blocks, 0.0% fragmentation) ***** FILE SYSTEM IS CLEAN ***** ***** FILE SYSTEM WAS MODIFIED ***** + mdconfig -d -u 5 $ - Peter _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" --Boundary-00=_uSW2MSQc6oN+6RL--
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