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

[olivier]

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
>