> On my system trace from DDB gave good data - basically the system
> is healthy and sitting in the idle loop, no interrupts masked, pingable on
> the network etc. 

Seems that one of my machines is now doing this too.  Yesterday rdists
to it would mysteriously hang and eventually get aborted by the
sending side.  I could still log into that machine via ssh, but that
rdist was stuck.

Just to make sure that it wasn't an ffs corruption bug I went single
user, mounted an NFS /usr and newfs-ed the local one.  Then I did a
tar copy from the NFS-ed /usr to the clean local partition.  The tar
also hung after a few 10's of megs.  The writing tar is waiting on
"biowait" flags 0x4006 according to DDB.  (This is even with
"genfs_vnops.c,v 1.29 2001/02/18")  

Does this ring a bell for anyone?

-wolfgang
-- 
       Wolfgang Rupprecht <wolfgang+gnus@dailyplanet.wsrcc.com>
		    http://www.wsrcc.com/wolfgang/
Coming soon: GPS mapping tools for Open Systems. http://www.gnomad-mapping.com/