zfs i/o hangs on 9-PRERELEASE

[Mark Felder]

On 25.11.2011 13:39, Freddie Cash wrote:
>
> There's a lot of uma_* stuff in there.  Just curious, what's the 
> following
> sysctl set to:
>
> vfs.zfs.zio.use_uma
>
> Back in the 8.x days, it was recommended to set it to 0 due to bugs:
> 
> http://lists.freebsd.org/pipermail/freebsd-stable/2010-June/057162.html
>
> No idea if this is still the case or not, but you may want to try 
> toggling
> that sysctl and see if it makes a difference.


Confirmed mine is set to 0.