From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262342AbVAELie (ORCPT ); Wed, 5 Jan 2005 06:38:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262336AbVAELie (ORCPT ); Wed, 5 Jan 2005 06:38:34 -0500 Received: from [213.146.154.40] ([213.146.154.40]:5777 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262346AbVAELhE (ORCPT ); Wed, 5 Jan 2005 06:37:04 -0500 Date: Wed, 5 Jan 2005 11:37:01 +0000 From: Christoph Hellwig To: Gildas LE NADAN Cc: linux-kernel@vger.kernel.org, linux-xfs@oss.sgi.com Subject: Re: unkillable processes using samba, xfs and lvm2 snapshots (k 2.6.10) Message-ID: <20050105113701.GA31391@infradead.org> Mail-Followup-To: Christoph Hellwig , Gildas LE NADAN , linux-kernel@vger.kernel.org, linux-xfs@oss.sgi.com References: <41D14251.4030704@inha.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41D14251.4030704@inha.fr> User-Agent: Mutt/1.4.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 28, 2004 at 12:24:01PM +0100, Gildas LE NADAN wrote: > Hi, > > I experience hangs on samba processes on a filer using xfs over lvm2 as > data partitions, when there is active snapshots of the xfs partitions. > > I have a clone of the production server (same software, same hardware) > where the situation can be reproduced perfectly. > > Testings showed that the result was the same, whether the snapshots were > mounted or not : smbd processes are locked and unkillable while the > machine is normaly working otherwise, except software reboot is > impossible and hardware reset is needed. > > I noticed Brad Fitzpatrick's case in kernel 2.6.10 changelog > (http://lkml.org/lkml/2004/11/14/98) and tested kernel 2.6.10 today > without success. > > Configuration is the following : > - supermicro m/b with dual Xeon 2,8Ghz (SMT is active) > - 1 GB ram, > - adaptec u320 raid controler > - kernel 2.6.10 > - debian sarge > - samba 3 > - LVM2 > - XFS with quota turned on > > All software are from debian sarge packages, except the kernel. > > I'm not able to determine if the problem is more xfs, device mapper or > samba related, and was not able to do extensive testings (using a > different filesystem, testing with a different daemon, etc...), but > SMT/SMP testings showed that this is not a SMP/SMT related problem. > > I've compiled the kernel with the debugging options, so I might provide > additional informations if needed as in Brad's case. I'll try to reproduce your problems soon.