Panic after hung rsync, probably zfs related

[Kostik Belousov]

On Wed, May 14, 2008 at 10:39:36AM +0200, Ben Stuyts wrote:
> 
> On 13 mei 2008, at 21:53, Xin LI wrote:
> 
> >| While doing an rsync from a zfs filesystem to an external usb hd  
> >(also
> >| zfs), the rsync processes hung in zfs state. I could not kill these
> >| processes, although the rest of the server seemingly continued to  
> >run
> >| fine. The reboot command did not work. Next I tried a shutdown now
> >| command. This caused a panic:
> >
> >Sound like you somehow run out of memory, there is an known issue with
> >ZFS which causes livelock when there is memory pressure.  Which rsync
> >version are you using?  With rsync 3.x the memory usage would drop
> >drastically which would help to prevent this from happening.
> 
> I'm running rsync 3.0.0. Two weeks ago I already increased the memory  
> in this machine from 4 to 8 GB, but I did not change any loader.conf  
> variables.
> 
> BTW, The wired memory goes all over the place in this machine: even  
> when it's mostly idle it varies between 300 MB and 3.5 GB. That's why  
> I added 4 more GB.
3.5Gb wired ? Do you run amd64 ?

Does wired memory drops lower after you change the load ?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 195 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20080514/834eadde/attachment.pgp