8.1-RELEASE ZFS hangs

[Matthias Gamsjager]

On Wed, Sep 8, 2010 at 8:52 AM, Sergey Zaharchenko
<doublef-ctm at yandex.ru> wrote:
> Hello Matthias!
>
> Tue, Sep 07, 2010 at 09:32:04PM +0200 you wrote:
>
>> Did you try 8 stable to see if it makes any difference?
>
> This server is to be going into production soon, so I'm not in the best
> position to try things. I've however tried disabling prefetch and ZIL.
> This helped ZFS pass bonnie++, but it deadlocked later on a repeated
> make -j 4 buildworld. top shows:
>
> CPU:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> Mem: 194M Active, 32M Inact, 1844M Wired, 48M Cache, 523M Buf, 5799M Free
>
> 19285 root             1  76    0 13060K  8876K zfs     2   0:00  0.00% cc1
> 19141 root             1  76    0 13060K  8876K tx->tx  1   0:00  0.00% cc1
> 19745 root             1  76    0 13052K  9116K tx->tx  1   0:00  0.00% cc1
>  1154 root             1  44    0  6896K   980K tx->tx  0   0:00  0.00% syslogd
>  2136 root             1  44    0  5808K   812K zio->i  2   0:00  0.00% newsyslog
>
> etc.
>
> This, apart from anything else, may indicate that disabling the features
> only masks the problems with ZFS, but doesn't eliminate them completely.
>
> Thanks for your input,
>
> --
> Sergey Zaharchenko
>


Could you give more information about the hardware you are using (disk
controller in particular) and /boot/loader.conf output.