From owner-freebsd-stable@FreeBSD.ORG Sun Jul 25 17:58:45 2010 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8DFD81065674 for ; Sun, 25 Jul 2010 17:58:45 +0000 (UTC) (envelope-from dan@langille.org) Received: from nyi.unixathome.org (nyi.unixathome.org [64.147.113.42]) by mx1.freebsd.org (Postfix) with ESMTP id 6A9E08FC1F for ; Sun, 25 Jul 2010 17:58:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by nyi.unixathome.org (Postfix) with ESMTP id B238F5093D for ; Sun, 25 Jul 2010 18:58:44 +0100 (BST) X-Virus-Scanned: amavisd-new at unixathome.org Received: from nyi.unixathome.org ([127.0.0.1]) by localhost (nyi.unixathome.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tM+5qXT2A61M for ; Sun, 25 Jul 2010 18:58:43 +0100 (BST) Received: from smtp-auth.unixathome.org (smtp-auth.unixathome.org [10.4.7.7]) (Authenticated sender: hidden) by nyi.unixathome.org (Postfix) with ESMTPSA id B4BA45089E for ; Sun, 25 Jul 2010 18:58:43 +0100 (BST) Message-ID: <4C4C7B4A.7010003@langille.org> Date: Sun, 25 Jul 2010 13:58:34 -0400 From: Dan Langille Organization: The FreeBSD Diary User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.7) Gecko/20100713 Thunderbird/3.1.1 MIME-Version: 1.0 To: stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: zpool destroy causes panic 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: Sun, 25 Jul 2010 17:58:45 -0000 I'm trying to destroy a zfs array which I recently created. It contains nothing of value. # zpool status pool: storage state: ONLINE status: One or more devices could not be used because the label is missing or invalid. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Replace the device using 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-4J scrub: none requested config: NAME STATE READ WRITE CKSUM storage ONLINE 0 0 0 raidz2 ONLINE 0 0 0 gpt/disk01 ONLINE 0 0 0 gpt/disk02 ONLINE 0 0 0 gpt/disk03 ONLINE 0 0 0 gpt/disk04 ONLINE 0 0 0 gpt/disk05 ONLINE 0 0 0 /tmp/sparsefile1.img UNAVAIL 0 0 0 corrupted data /tmp/sparsefile2.img UNAVAIL 0 0 0 corrupted data errors: No known data errors Why sparse files? See this post: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=1007077+0+archive/2010/freebsd-stable/20100725.freebsd-stable The two tmp files were created via: dd if=/dev/zero of=/tmp/sparsefile1.img bs=1 count=0 oseek=1862g dd if=/dev/zero of=/tmp/sparsefile2.img bs=1 count=0 oseek=1862g And the array created with: zpool create -f storage raidz2 gpt/disk01 gpt/disk02 gpt/disk03 \ gpt/disk04 gpt/disk05 /tmp/sparsefile1.img /tmp/sparsefile2.img The -f flag was required to avoid this message: invalid vdev specification use '-f' to override the following errors: mismatched replication level: raidz contains both files and devices I tried to offline one of the sparse files: zpool offline storage /tmp/sparsefile2.img That caused a panic: http://www.langille.org/tmp/zpool-offline-panic.jpg After rebooting, I rm'd both /tmp/sparsefile1.img and /tmp/sparsefile2.img without thinking they were still in the zpool. Now I am unable to destroy the pool. The system panics. I disabled ZFS via /etc/rc.conf, rebooted, recreated the two sparse files, then did a forcestart of zfs. Then I saw: # zpool status pool: storage state: ONLINE status: One or more devices could not be used because the label is missing or invalid. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Replace the device using 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-4J scrub: none requested config: NAME STATE READ WRITE CKSUM storage ONLINE 0 0 0 raidz2 ONLINE 0 0 0 gpt/disk01 ONLINE 0 0 0 gpt/disk02 ONLINE 0 0 0 gpt/disk03 ONLINE 0 0 0 gpt/disk04 ONLINE 0 0 0 gpt/disk05 ONLINE 0 0 0 /tmp/sparsefile1.img UNAVAIL 0 0 0 corrupted data /tmp/sparsefile2.img UNAVAIL 0 0 0 corrupted data errors: No known data errors Another attempt to destroy the array created a panic. Suggestions as to how to remove this array and get started again? -- Dan Langille - http://langille.org/