On 14 mei 2008, at 10:15, Kris Kennaway 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.

> This isn't known to cause a double fault though. Unfortunately we
> probably need more information than was available in order to proceed.

Yes, I agree. But I don't know what to do in this sort of case where
the machine is completely wedged.


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