Hi,  
  
I'm experiencing very annoying NFS problems with NetBSD.  
  
It happens often that a mounted NFS share just breaks down, for a reason  
that I cannot understand, because the connection is still up, I can ping,  
ftp, telnet whatever between the two computers, but the NFS connection went  
completely dead. Every process using the share turns into a zombie and can't  
even be killed. umount -f does not work (and turns into a non-killable  
zombie). Only solution is to hard-reboot the computer (can't even be  
rebooted by the "reboot" commando, just hangs at the shutdown scripts).  
  
Another day the nfs share works without problems.  
  
Is there something that can be done to avoid this (in particular the 
aggravating zombie behavior) ? I tried  
something with time-out values but the error still returns.  
  
This happens between two netbsd boxes, versions 1.6, 2.0 every combination.  
  
Thanks for reply,  
  
Bastiaan Welmers