ZFS-NFS kernel panic under load

[Weldon S Godfrey 3]

Ok, I tried panic, it gave a page of the typical panic page that this 
crash generates under 7.0.  I rebooted and no core, so I am missing a 
step.  Sorry for being clueless here.

Since the panic didn't reboot, I did a bt, it said process it was at 
process 1001 access.nfsrv and access.nfs3srv (sorry, I know that isn't 
quite right, I meant to write it down, it was definately something with 
access and nfsrv)

Thanks,

Weldon


If memory serves me right, sometime around Yesterday, Jeremy Chadwick told me:

> On Thu, Aug 21, 2008 at 03:35:04PM -0400, Weldon S Godfrey 3 wrote:
>> Looks like the bug with NFS and ZFS still exists.
>>
>> Well, I got the lastest 8-HEAD on with the most recent ZFS patch and ran
>> the benchmarks again this morning and after about an hour, it paniced
>> with the same message about page fault with nfsd.  It dropped to debugger
>> on shutdown, it didn't do a savecore, dumpdev is set to AUTO.
>
> Specifically regarding the debugger/didn't run savecore/dumpdev
> statement:
>
> What exactly did you type once at the debugger prompt?  It matters.
>
> There's also this, which I reported nearly a year ago:
> http://www.freebsd.org/cgi/query-pr.cgi?pr=conf/118255
>
> I haven't been able to reproduce my above PR on RELENG_7, but I'm
> unaware of anything that might have changed in RELENG_7 that fixes this
> problem.
>
> -- 
> | Jeremy Chadwick                                jdc at parodius.com |
> | Parodius Networking                       http://www.parodius.com/ |
> | UNIX Systems Administrator                  Mountain View, CA, USA |
> | Making life hard for others since 1977.              PGP: 4BD6C0CB |
>
>
>