kern/172092: zfs import panics kernel
Oliver Adler
bug_reporter at a999.de
Wed Sep 26 12:50:16 UTC 2012
>Number: 172092
>Category: kern
>Synopsis: zfs import panics kernel
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 26 12:50:15 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Oliver Adler
>Release: 9.0-RELEASE-p3
>Organization:
N/A
>Environment:
FreeBSD i5.a999.de 9.0-RELEASE-p3 FreeBSD 9.0-RELEASE-p3 #0: Tue Jun 12 02:52:29 UTC 2012 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
Using a 2.5" external USB 3.0 disk with 750 GB. On the disk is a bootable 9.0 FBSD. The disk was used as boot disk on a i386 atom system. Then using it on a amd64 system with
zpool import -o altroot=/mnt -f zroot
orked fine. After shutting down the system with
shutdown -p
now the disk can no more be used.
Issuing
zpool list
or
zpool import -o altroot=/mnt -f zroot
on the amd64 system panics the kernel. Also attaching the device to the i386 system panics the atom system.
The failed assertion is in the file
ddt.c line 129.
I have a picture of the panic.
My assumption is, that there is a problem with deduplication (because on the disk is one dataset with switched on dedup).
The data of the disk is no more accessible.
>How-To-Repeat:
Using this disk, plugging it to either the amd64 or the i386 system
Issuing
zpool list
and the panic shows up
If you have any patches to test I will do this. I will keep the disk in this state for some time. If I can help in any way, please ask me.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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