From owner-freebsd-fs@FreeBSD.ORG Fri Nov 6 08:47:38 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 09065106568F for ; Fri, 6 Nov 2009 08:47:38 +0000 (UTC) (envelope-from gerrit@pmp.uni-hannover.de) Received: from mrelay1.uni-hannover.de (mrelay1.uni-hannover.de [130.75.2.106]) by mx1.freebsd.org (Postfix) with ESMTP id 8CA988FC12 for ; Fri, 6 Nov 2009 08:47:37 +0000 (UTC) Received: from www.pmp.uni-hannover.de (www.pmp.uni-hannover.de [130.75.117.2]) by mrelay1.uni-hannover.de (8.14.2/8.14.2) with ESMTP id nA68lYfP000741 for ; Fri, 6 Nov 2009 09:47:35 +0100 Received: from pmp.uni-hannover.de (arc.pmp.uni-hannover.de [130.75.117.1]) by www.pmp.uni-hannover.de (Postfix) with SMTP id 54AAF24 for ; Fri, 6 Nov 2009 09:47:34 +0100 (CET) Date: Fri, 6 Nov 2009 09:47:34 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: freebsd-fs@freebsd.org Message-Id: <20091106094734.4b056899.gerrit@pmp.uni-hannover.de> Organization: Albert-Einstein-Institut (MPI =?ISO-8859-1?Q?f=FCr?= Gravitationsphysik & IGP =?ISO-8859-1?Q?Universit=E4t?= Hannover) X-Mailer: Sylpheed 2.7.1 (GTK+ 2.12.11; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-PMX-Version: 5.5.5.374460, Antispam-Engine: 2.7.1.369594, Antispam-Data: 2009.11.6.83630 Subject: zfs panic mounting fs after crash with RC2 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Nov 2009 08:47:38 -0000 Hi, unfortunately I got no answer concerning this problem so far on -stable and -current (apart from the suggestion to try it again here :-). I can reproduce the panic, and if someone can guide me what to do with kdb, gdb, zdb or whatever tool might be needed to get the information needed to fix this, I'm all ears... cu Gerrit Begin forwarded message: Date: Wed, 4 Nov 2009 09:29:00 +0100 From: Gerrit K=FChn To: freebsd-stable@FreeBSD.ORG Cc:=20 Subject: zfs panic mounting fs after crash with RC2 Hi, Yesterday I had the opportunity to play around with my yet-to-become new fileserver a bit more. Originally I had installed 7.2-R, which I upgraded to 8-0-RC2 yesterday. After that I upgraded my zpool consisting of 4 disks in raidz1 constallation to v13. Some time later I tried to use powerd which was obviously a bad idea: it crashed the machine immediately. I will give a separate report on that later as it is probably related to the hardware, which is a bit exotic (VIA VB8001 board with 64bit Via Nano processor). However, the worst thing for me is, that after rebooting from that crash, one of my zfs fs cannot be mounted anymore. As soon as I try to mount it I get a kernel panic. I can still access the properties (I made use of "canmount=3Dnoauto" for the first time :-), but I cannot do a snapshot of the fs (funny enough, zfs complains that the fs is busy, while in reality it is not even mounted - so how could it be busy?). I took a picture of the kernel panic and put it here (don't know if there is any useful information in it): The pool as such seems to be fine, all other fs in it can be mounted and used, only trying to mount tank/sys/var triggers this panic. Are there any suggestions what I could do to get my fs back? Please let me know if (and how) I can provide more debugging information. cu Gerrit