ZFS deadlock

[Johan Ström]

On Apr 8, 2008, at 9:40 AM, LI Xin wrote:

> For your question: just reboot would be fine, you may want to tune  
> your arc size (to be smaller) and kmem space (to be larger), which  
> would reduce the chance that this would happen, or eliminate it,  
> depending on your workload.

Back online now, with kmem/kmem_max to 1G and arcsize to 512M. Are  
those reasonable on a 2G machine? I think I've read that from  
somewhere, but cannot find that (arc at least) in the TuningGuide now.

>
> This situation is not recoverable and you can trust ZFS that you  
> will not lose data if they are already sync'ed.
>

Actually, I've had a lot of hard crashes lately on this machine (bad  
hw) but not a single time I have lost data (to my knowledge at  
least...). In that regard, comparing to UFS, ZFS is waaay better! :)

> -- 
> Xin LI <delphij at delphij.net>	http://www.delphij.net/
> FreeBSD - The Power to Serve!
>