NFSD hang

[Jeremy Chadwick]

On Sun, Sep 25, 2011 at 11:14:30PM -0700, Kirill Yelizarov wrote:
> Good Day!
> I'v got a problem with nfs share on zfs volume. Everything worked fine for a few month and now it hang. This share stores logs from 9 servers at night, about 1-2Gb from each server. ZFS is filled to 26% and it is v28
> 
> last pid: 46573;? load averages: 195.82, 199.86, 200.12?????????????????????????????????????????????????????????????????????????????? up 108+21:56:50 10:05:06
> 432 processes: 208 running, 224 sleeping
> CPU:? 0.0% user,? 0.0% nice,? 100% system,? 0.0% interrupt,? 0.0% idle
> Mem: 280M Active, 1469M Inact, 9584M Wired, 161M Cache, 1232M Buf, 311M Free
> Swap: 16G Total, 16G Free
> 
> ? PID USERNAME????? THR PRI NICE?? SIZE??? RES STATE?? C?? TIME?? WCPU COMMAND
> ?1666 root????????? 256? 76??? 0? 5788K? 5120K RUN??? 14 476.8H 1508.64% nfsd
> 
> # zpool list
> NAME?? SIZE? ALLOC?? FREE??? CAP? DEDUP? HEALTH? ALTROOT
> data? 3.62T?? 954G? 2.69T??? 25%? 1.00x? ONLINE? -
> 
> # zfs list
> NAME?? USED? AVAIL? REFER? MOUNTPOINT
> data?? 954G? 2.64T?? 954G? /data
> 
> # zfs mount
> data??????????????????????????? /data
> 
> What should i look for to resolve it?

What version of FreeBSD exactly, and what build date?

Please provide output from "procstat -k -k 1666" (yes, two -k's).

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |