ZFS-NFS kernel panic under load

[Jeremy Chadwick]

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 |