[ZFSv28] Loader hangs, import failes,
zfs filesystem unavailable.
bartosz.stec at it4pro.pl
Sat Jun 4 19:56:49 UTC 2011
W dniu 2011-06-04 18:55, Bartosz Stec pisze:
> W dniu 2011-06-04 14:21, Bartosz Stec pisze:
>> W dniu 2011-06-03 14:16, Pawel Jakub Dawidek pisze:
>>> On Thu, Jun 02, 2011 at 06:58:10PM +0200, Bartosz Stec wrote:
>>>> Hi list,
>>>> Today I needed to shut down my home server (FreeSBD9-CURRENT, 3 x
>>>> 40GB ATA HDD in RADZ1, ZFS only, GPT, i386) for a moment. After
>>>> power up, loader started to spin cursor indifinitely, and didn't
>>>> load the kernel. No error messages, no hints, just spinning cursor.
>>>> I tried booting from other HDDs in case that bootstrap area errors
>>>> on single hdd but no luck.
>>>> I wanted to play with latest current LiveFS snapshot (with ZFSv28
>>>> support), but apparently latest one is from february??
>>>> Finally I ended with mfsBSD from http://mfsbsd.vx.sk/
>>>> I've downloaded "8.2-RELEASE-i386 with ZFSv28 special edition
>>>> <http://mfsbsd.vx.sk/iso/mfsbsd-se-8.2-zfsv28-i386.iso>" iso, burned
>>>> it and booted machine. Here's what happened when i was trying to
>>>> import zpool:
>>>> mfsbsd# zpool status
>>>> no pools available
>>>> mfsbsd# zpool import
>>>> pool: zroot
>>>> id: 16074929158756467860
>>>> state: ONLINE
>>>> status: The pool was last accessed by another system.
>>>> action: The pool can be imported using its name or numeric
>>>> identifier and
>>>> the '-f' flag.
>>>> see: http://www.sun.com/msg/ZFS-8000-EY
>>>> zroot ONLINE
>>>> raidz1-0 ONLINE
>>>> gptid/2ea57c66-bc69-11df-8955-0050dad823cd ONLINE
>>>> gptid/5bc92016-6852-11df-a16c-0050dad823cd ONLINE
>>>> gptid/87d467cc-bc3b-11df-8066-0050dad823cd ONLINE
>>>> mfsbsd# zpool import -f zroot
>>>> cannot import 'zroot': one or more devices is currently
>>> Is there anything that may keep any of those vdevs open?
>>> Try setting vfs.zfs.debug to 1 before import.
> It seems that LiveFS is now included in bootonly ISO, so I made
> another attempt using FreeBSD-9.0-CURRENT-201105-i386-bootonly.iso
> image. I tried importing with debugging enabled, but dmesg output was
> the same as in my previous message.
> I had so much faith in raidz + snapshots, that I have absolutely no
> backups of this system :( I don't care about time which is needed to
> find a problem and possible fix, but I am really worried about my data
> now. What else could I do?
> And yes, I know that I shouldn't treat CURRENT as a stable and
> reliable system, and you never have too much backups. I just didn't
> realized how important data on this machine is until I realized that
> maybe I just lost it... Crap.
Simplest solutions are always hardest to find:
mfsbsd# zpool import -F zroot
cannot import 'zroot': pool may be in use from other system, it was last
accessed by serwer.obsysa.net (hostid: 0x4ae40037) on Thu Jun 2
use '-f' to import anyway
mfsbsd# zpool import -Ff zroot
Pool zroot returned to its state as of Thu Jun 2 14:40:57 2011.
Discarded approximately 2 seconds of transactions.
mfsbsd# zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
zroot 108G 41.6G 66.4G 38% 1.29x ONLINE -
Although filesystem is alive again now, what we've seen here was
probably some serious bug, because PC was shut down cleanly before it
Thanks Pawel, Vladislav, for your effort :)
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