From owner-freebsd-stable@FreeBSD.ORG Mon Jul 19 12:48:27 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2FF761065678 for ; Mon, 19 Jul 2010 12:48:27 +0000 (UTC) (envelope-from mike@sentex.net) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by mx1.freebsd.org (Postfix) with ESMTP id C9B068FC0A for ; Mon, 19 Jul 2010 12:48:26 +0000 (UTC) Received: from mdt-xp.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.14.4/8.14.3) with ESMTP id o6JCmP4N049393; Mon, 19 Jul 2010 08:48:25 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <201007191248.o6JCmP4N049393@lava.sentex.ca> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Mon, 19 Jul 2010 08:48:27 -0400 To: Jeremy Chadwick From: Mike Tancsa In-Reply-To: <20100719041149.GA93978@icarus.home.lan> References: <201007182108.o6IL88eG043887@lava.sentex.ca> <20100718211415.GA84127@icarus.home.lan> <201007182142.o6ILgDQW044046@lava.sentex.ca> <20100719023419.GA91006@icarus.home.lan> <201007190301.o6J31Hs1045607@lava.sentex.ca> <20100719033424.GA92607@icarus.home.lan> <20100719035844.GA93487@icarus.home.lan> <20100719041149.GA93978@icarus.home.lan> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: deadlock or bad disk ? RELENG_8 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Jul 2010 12:48:27 -0000 At 12:11 AM 7/19/2010, Jeremy Chadwick wrote: >On Sun, Jul 18, 2010 at 08:58:44PM -0700, Jeremy Chadwick wrote: > > I took a look at the RELENG_8 code responsible for printing this > > message: src/sys/vm/swap_pager.c > > > > [...] > > 1086 static int > > 1087 swap_pager_getpages(vm_object_t object, vm_page_t *m, int > count, int reqpage) > > 1088 { > > [...] > >There was a change to this piece of code on May 13th. See commit >1.312.2.4 below: > >http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/vm/swap_pager.c > >Before I pull in kib@ or alc@ to help determine if what was introduced >could cause what you're seeing, can you clarify this point? > > > FreeBSD 8.1-PRERELEASE #0: Tue Jul 13 09:55:48 EDT 2010 > > mdtancsa at backup3.sentex.ca:/usr/obj/usr/src/sys/backup amd64 > > [...] > > Its never been an issue in the past 2yrs. The same box was RELENG_7 > > for some time and then in the past 3 months updated to RELENG_8. > >Has this system run a previous version of RELENG_8 within the past 3 Here is the recent history of what kernels the box was running Dec 1 07:49:34 backup3 kernel: FreeBSD 7.2-STABLE #0: Mon Nov 30 23:18:16 EST 2009 Dec 1 08:06:17 backup3 kernel: FreeBSD 7.2-STABLE #0: Mon Nov 30 23:18:16 EST 2009 Mar 9 14:50:02 backup3 kernel: FreeBSD 7.3-PRERELEASE #1: Tue Mar 9 12:44:17 EST 2010 Mar 9 14:59:58 backup3 kernel: FreeBSD 7.3-PRERELEASE #1: Tue Mar 9 12:44:17 EST 2010 Apr 21 10:38:05 backup3 kernel: FreeBSD 8.0-STABLE #0: Wed Apr 21 10:19:12 EDT 2010 May 10 10:44:04 backup3 kernel: FreeBSD 8.0-STABLE #2: Mon May 10 09:30:36 EDT 2010 May 26 10:46:05 backup3 kernel: FreeBSD 8.1-PRERELEASE #0: Tue May 25 17:18:59 EDT 2010 Jul 2 13:57:32 backup3 kernel: FreeBSD 8.1-PRERELEASE #2: Fri Jul 2 12:07:22 EDT 2010 Jul 13 13:11:43 backup3 kernel: FreeBSD 8.1-PRERELEASE #0: Tue Jul 13 09:55:48 EDT 2010 Jul 18 13:46:15 backup3 kernel: FreeBSD 8.1-PRERELEASE #0: Tue Jul 13 09:55:48 EDT 2010 >months, or are you seeing this issue "as a result of upgrading from >RELENG_7 to RELENG_8"? The first time I have seen this was going from July 2 to the 13th. However, before drawing any conclusions, this could just be a very odd edge case or hardware, or an actual regression. I think its very hard to say at this point as I cant even reproduce it on demand. ---Mike -------------------------------------------------------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet since 1994 www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike