Date: Fri, 15 Jul 2016 16:18:25 +0200 (CEST) From: Claus Andersen <clan@wheel.dk> To: freebsd-questions@freebsd.org Subject: Panic during boot when mounting ZFS root Message-ID: <alpine.BSF.2.20.1607151612200.47824@freesbee.wheel.dk>
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Hi,
I would like to have some advice on continued troubleshooting of this.
Facts:
- System is running 10.1 (or maybe later)
- ZFS on root
- pool name is tank
- Panics when mounting during boot
- Same in single user mode
- I can PXE boot server to memtest - and RAM should be OK (Only 30 min
testing)
- I can PXE boot server into "rescue" system which is mfsbsd 10.3
- The server is remote but I can get IP KVM
In the rescue system I can see the pool - and at first glance it looks
good.
root@rescue:~ # zpool import
pool: tank
id: 17627562107603613001
state: ONLINE
status: Some supported features are not enabled on the pool.
action: The pool can be imported using its name or numeric identifier,
though
some features will not be available without an explicit 'zpool
upgrade'.
config:
tank ONLINE
raidz2-0 ONLINE
ada0p3 ONLINE
ada1p3 ONLINE
ada2p3 ONLINE
ada3p3 ONLINE
ada4p3 ONLINE
ada5p3 ONLINE
ada6p3 ONLINE
I try to import it - but it fails:
root@rescue:~ # zpool import -o altroot=/mnt tank
cannot import 'tank': pool may be in use from other system
use '-f' to import anyway
Then I add the -f switch - and the server panics!
root@rescue:~ # zpool import -f -o altroot=/mnt tank
I think it writes a line or two on the console but it reboots too quickly
for me to see what it is. So no error messages to search on :-/
My intention was to try to run a "zpool scrub tank" but I need to do the
import first.
This is at the edge of my ZFS troubeshooting knowledge. Does anyone have
any advice on how to proceed?
Kind Regards,
Claus Andersen
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