ZFS related kernel panic

[Andriy Gapon]

on 09/09/2010 20:23 a.smith at ukgrid.net said the following:
> Quoting jdc:
>>
>> This is a siis(4) card -- chances are he can't turn it off.  :-)  We
>> really need a backtrace to see what transpired.
>>
>> The siis(4) driver may have crashed as a result of LUN timeouts.  The
>> driver shouldn't panic, I agree, but the port timing out is of major
>> concern.  I imagine this behaviour (the crash) could be reproduced even
>> if UFS2 was used and the timeout took place.
> 
> Hi,
> 
>   as mentioned I cant currently get any back trace as the system hangs when it
> starts to core dump after the panic :(.

Try to add the following options to your kernel:
options         KDB
options         KDB_TRACE

With these a backtrace should be printed before dumping and you should be able
take a picture of your screen.

-- 
Andriy Gapon