NFS/ZFS hangs after upgrading from 9.0-RELEASE to -STABLE

[Reed A. Cartwright]

I need to do this as well.  Can you give me a quick primer on the
commands you used to revert to the earlier driver?

On Thu, Dec 13, 2012 at 11:14 PM, olivier <olivier777a7 at gmail.com> wrote:
> For what it's worth, I think I might have solved my problem by reverting to
> an older version of the mps driver. I checked out a recent version of
> 9-STABLE and reversed the changes in
> http://svnweb.freebsd.org/base?view=revision&revision=230592 (perhaps there
> was a simpler way of reverting to the older mps driver). So far so good, no
> hang even when hammering the file system.
>
> This does not conclusively prove that the new LSI mps driver is at fault,
> but that seems to be a likely explanation.
>
> Thanks to everybody who pointed me in the right direction. Hope this helps
> others who run into similar problems with 9.1
> Olivier
>
> On Thu, Dec 13, 2012 at 10:14 AM, olivier <olivier777a7 at gmail.com> wrote:
>
>>
>>
>> On Thu, Dec 13, 2012 at 9:54 AM, Andriy Gapon <avg at freebsd.org> wrote:
>>
>>> Google for "zfs deadman".  This is already committed upstream and I think
>>> that it
>>> is imported into FreeBSD, but I am not sure...  Maybe it's imported just
>>> into the
>>> vendor area and is not merged yet.
>>>
>>
>> Yes, that's exactly what I had in mind. The logic for panicking makes
>> sense.
>> As far as I can tell you're correct that deadman is in the vendor area but
>> not merged. Any idea when it might make it into 9-STABLE?
>> Thanks
>> Olivier
>>
>>
>>
>>
>>> So, when enabled this logic would panic a system as a way of letting know
>>> that
>>> something is wrong.  You can read in the links why panic was selected for
>>> this job.
>>>
>>> And speaking FreeBSD-centric - I think that our CAM layer would be a
>>> perfect place
>>> to detect such issues in non-ZFS-specific way.
>>>
>>> --
>>> Andriy Gapon
>>>
>>
>>
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-- 
Reed A. Cartwright, PhD
Assistant Professor of Genomics, Evolution, and Bioinformatics
School of Life Sciences
Center for Evolutionary Medicine and Informatics
The Biodesign Institute
Arizona State University