From owner-freebsd-stable@FreeBSD.ORG Wed Nov 12 18:22:41 2008 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 EDB911065679 for ; Wed, 12 Nov 2008 18:22:41 +0000 (UTC) (envelope-from tdb@carrick.bishnet.net) Received: from carrick.bishnet.net (carrick.bishnet.net [IPv6:2a01:348:132::1]) by mx1.freebsd.org (Postfix) with ESMTP id B3B168FC18 for ; Wed, 12 Nov 2008 18:22:41 +0000 (UTC) (envelope-from tdb@carrick.bishnet.net) Received: from tdb by carrick.bishnet.net with local (Exim 4.66 (FreeBSD)) (envelope-from ) id 1L0KMN-0003UZ-7i; Wed, 12 Nov 2008 18:22:35 +0000 Date: Wed, 12 Nov 2008 18:22:35 +0000 From: Tim Bishop To: David Peall Message-ID: <20081112182234.GE26195@carrick.bishnet.net> References: <20081112175826.GD26195@carrick.bishnet.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-PGP-Key: 0x5AE7D984, http://www.bishnet.net/tim/tim-bishnet-net.asc X-PGP-Fingerprint: 1453 086E 9376 1A50 ECF6 AE05 7DCE D659 5AE7 D984 User-Agent: Mutt/1.5.13 (2006-08-11) X-Bishnet-MailScanner-Information: Contact postmaster@bishnet.net X-Bishnet-MailScanner-VirusCheck: Found to be clean X-Bishnet-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-1.499, required 5, AWL -0.49, BAYES_00 -2.60, DNS_FROM_SECURITYSAGE 1.51, NO_RELAYS -0.00, TW_JH 0.08) X-Bishnet-MailScanner-From: tdb@carrick.bishnet.net Cc: Tim Bishop , freebsd-stable@freebsd.org Subject: Re: System deadlock when using mksnap_ffs 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: Wed, 12 Nov 2008 18:22:42 -0000 On Wed, Nov 12, 2008 at 08:10:50PM +0200, David Peall wrote: > > FreeBSD paladin 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #8: Mon Nov 10 > > 20:49:51 GMT 2008 tdb@paladin:/usr/obj/usr/src/sys/PALADIN amd64 > > > > I run the mksnap_ffs command to take the snapshot and some time later > > the system completely freezes up: > > If the file system is UFS2 it's a known problem but should have been > fixed. > http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues > > ident /boot/kernel/kernel | grep subr_sleepqueue > > version should be greater than 1.39.2.3? Yes it's UFS2, and yes it's greater than 1.39.2.3: $FreeBSD: src/sys/kern/subr_sleepqueue.c,v 1.39.2.5 2008/09/16 20:01:57 jhb Exp $ Are you sure the problem referenced on that page is the same? It talks about "dog slow" snapshotting, which I see on other filesystems and machines. But in this particular case the system is dead, and does not recover. Tim. -- Tim Bishop http://www.bishnet.net/tim/ PGP Key: 0x5AE7D984