HEADS UP: New ZFS in the tree.

[Stefan Bethke]

Am 03.12.2008 um 00:29 schrieb Peter Schuller:

>> I've noticed the past couple of days, when using the server (not very
>> often), every now and then, the GUI (KDE 4.1) will "hang" for up to 5
>> minutes (no mouse movement, no keyboard events), while the drives  
>> work like
>> crazy.
>
> I was not explicit about it, but FWIW in my case the hang is not due
> to drive saturation. The drives were mostly idle (except some stuff
> triggered by a buildworld I had going) during the extended period of
> ktorrent being unkillable. But again I never had this happen
> pre-CURRENT.

Just a very brief "me too" (but possibly different effect): I'm stress  
testing two machines I put together over the weekend with an endless  
loop of make -j4 universe, with /usr/obj on ZFS, with a single disk.  
One of the two machines has now been stuck for a couple of hours, and  
trying to access /tank results in a hung process, as will zfs list.

I'll reboot and see what happens, and if I can trigger it again, willt  
try to produce more details.

I have set
vfs.zfs.arc_max="512M"
vfs.zfs.prefetch_disable=1
in loader.conf

FreeBSD lokschuppen.lassitu.de 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Wed  
Dec  3 07:05:03 UTC 2008     root at lokschuppen.lassitu.de:/usr/obj/usr/ 
src/sys/EISENBOOT  amd64


Stefan

-- 
Stefan Bethke <stb at lassitu.de>   Fon +49 170 346 0140