Date: Wed, 4 Nov 2009 09:29:00 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de> To: freebsd-stable@FreeBSD.ORG Subject: zfs panic mounting fs after crash with RC2 Message-ID: <20091104092900.29b4518a.gerrit@pmp.uni-hannover.de>
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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=noauto" 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): <http://www.pmp.uni-hannover.de/test/Mitarbeiter/g_kuehn/data/zfs-panic.jpg>; 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
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