From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Tso Subject: Re: [Bug #13232] ext3/4 with synchronous writes gets wedged by Postfix Date: Tue, 19 May 2009 16:41:52 -0400 Message-ID: <20090519204152.GE9053@mit.edu> References: <20090518132517.GL32019@mit.edu> <20090519171713.GA3354@dbwatson.ukfsn.org> <20090519175312.GC9053@mit.edu> <18962.64002.324970.49512@stoffel.org> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <18962.64002.324970.49512-HgN6juyGXH5AfugRpC6u6w@public.gmane.org> Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: John Stoffel Cc: David Watson , Al Viro , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List On Tue, May 19, 2009 at 02:27:14PM -0400, John Stoffel wrote: > I wonder if this is the reason my main file server has been locking up > solid under 2.6.29 or newer kernels lately, but 2.6.28 is rock solid. > Since it's my main file server at home, and with my home dir NFS > mounted from it onto another system, it's been hard to catch. I spent > some time fiddling around getting netconsole setup, but then I ran out > of time. Unless you have your partition mounted with the "sync" mount option (which has negative performance implifications; it makes sense for a mail queue directory, but not necessarily for a general purpose file server) or you have a directory chattr'ed with the sync flag, probably not... If you want to try it, though, the patch is available here: http://bugzilla.kernel.org/attachment.cgi?id=21436 > If someone could send me the patch, I'll apply it and see how well > 2.6.29.[34] works, and whether or not 2.6.30-rcN works as well. > Reproducing the problem was pretty easy for me. Anything on the console? Any oops messages, or soft lockup warnings? What filesystem(s) are you using? - Ted