zfs: panic on import

[Johannes Totz]

On 16/11/2011 18:40, Johannes Totz wrote:
> On 16/11/2011 17:50, Freddie Cash wrote:
>> On Wed, Nov 16, 2011 at 9:47 AM, Johannes Totz<jtotz at imperial.ac.uk>
>> wrote:
>>
>>> Does anybody have a very recent FreeBSD live cd/dvd image that I
>>> could try?
>>>
>>
>> The FreeBSD 9.0 install CD is a LiveCD. The first screen gives you the
>> option of starting the installer or dropping to a shell.
>>
>> 9.0-RC2 CDs are available on ftp://ftp.freebsd.org and should be
>> available
>> on most mirrors by now.
>>
>
> Ah thanks for the pointer, I always get lost navigating the ftp sever...
>
> But, same panic unfortunately (transcribbled):
>
> current process: txg_thread_enter
> panic: page fault
> ...
> #5 ... calltrap
> #6 ... zio_vdev_io_start
> #7 ... zio_execute
> #8 ... zio_ioctl
> #9 ... zio_flush
> #10 ... vdev_config_sync
> #11 ... spa_sync
> #12 ... txg_sync_thread
> #13 ... fork_exit
> #14 ... fork_trampoline

This PR http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/155587 seems 
related. I also offlined the file-vdev before the machine crashed. Now 
it panics on import. And I don't get any dump either...