Date: Mon, 30 Jun 2008 21:40:04 GMT From: Joerg Wunsch <j@uriah.heep.sax.de> To: freebsd-fs@FreeBSD.org Subject: Re: kern/114676: snapshot creation panics: snapacct_ufs2: bad block Message-ID: <200806302140.m5ULe4LF067139@freefall.freebsd.org>
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The following reply was made to PR kern/114676; it has been noted by GNATS.
From: Joerg Wunsch <j@uriah.heep.sax.de>
To: bug-followup@freebsd.org
Cc:
Subject: Re: kern/114676: snapshot creation panics: snapacct_ufs2: bad block
Date: Mon, 30 Jun 2008 22:34:42 +0200
FreeBSD-7-stable is completely unstable for me due to this panic.
I used to have regular snapshots enabled on /var and /home. While
there has been random (and not quite reproducible) file corruption
happened within snapshotted binary files in the past, after upgrading
from FreeBSD 6.x to 7-stable, the system went completely unstable due
to this panic. It crashes every couple of days now. I have already
disabled the regular snapshots, but it's got a tendency for a complete
hard lockup during startup after a crash. The only remedy then is to
manually fsck everything in single-user mode.
Here's the dump information from the recent crash dumps:
Dump header from device /dev/ad4s1b
Architecture: i386
Architecture Version: 2
Dump Length: 317976576B (303 MB)
Blocksize: 512
Dumptime: Wed Jun 25 04:10:25 2008
Hostname: uriah.heep.sax.de
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 7.0-STABLE #5: Tue Jun 17 15:06:46 MET DST 2008
r@uriah.heep.sax.de:/usr/obj/usr/src/sys/URIAH
Panic String: snapacct_ufs2: bad block
Dump Parity: 558154102
Bounds: 42
Dump Status: good
Dump header from device /dev/ad4s1b
Architecture: i386
Architecture Version: 2
Dump Length: 180707328B (172 MB)
Blocksize: 512
Dumptime: Mon Jun 30 22:05:09 2008
Hostname: uriah.heep.sax.de
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 7.0-STABLE #6: Mon Jun 30 21:24:35 MET DST 2008
root@uriah.heep.sax.de:/usr/obj/usr/src/sys/URIAH
Panic String: snapacct_ufs2: bad block
Dump Parity: 859829782
Bounds: 43
Dump Status: good
I'm going to avoid /any/ kind of snapshot (even dump -L) now just to
get a stable system again (hopefully).
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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