NFS: freeze during copy

[Vivek Khera]

On Sep 26, 2006, at 10:31 AM, rvenne at dental-on-line.fr wrote:

> I was able to mount nfs mounting point and to copie 16K of 7G data.  
> and, it goes to freezing. I can't kill neither cp process neither  
> mount unmount nfs (umount command goes freezing too). tcpdump tells  
> me that server doesn't give any response in spite of client's udp  
> queries.
>

sounds similar to my issue with mksnap_ffs locking up in "D" state,  
except that mksnap also locks the whole file system while it works,  
so if it freezes, so does the full FS.

I'm running 6.2-PRE from 9/23.