[wplug] NFS: Copying large files hangs

[Brandon Kuczenski]

I am having some issues with NFS.  The Client machine is Linux 2.6.11, 
running Debian, and the server is FreeBSD 4.11.  When I copy a large file 
(~200 MB) I get about 3/4 of the way through before the copying just 
stops.  I can't tell how far it gets but it's not the same point every 
time.

Before the glitch occurs, ping times between the machines are around 1ms; 
afterwards, they vary from 500-1500ms.  The client machine becomes 
unstable and sometimes won't even shutdown cleanly (I get an endless 
screen of illegible nfs/RPC error messages) but it is fully repeatable.

I believe both client and server are running NVS version 3.  Here is the 
line from /etc/fstab on the client:
ocean:/home/share /mnt/nfs/ocean/share  nfs 
nfsvers=3,rsize=8192,wsize=8192,timeo=14,intr   0       0

I added all those options after running with defaults failed.

Any suggestions how to solve this problem? or at least how to approach it?

-Brandon