NFS: freeze during copy

[Kris Kennaway]

On Wed, Sep 27, 2006 at 11:11:33AM +0200, rvenne at dental-on-line.fr wrote:
> rvenne at dental-on-line.fr wrote:
> 
> >Vivek Khera wrote:
> >
> >>
> >>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.
> >>
> >yeah, that's true, ps ax shows the "cp" process staing in D state. by 
> >the way, the server is unavailable now, execpting ping. the whole 
> >system is out.
> >
> the server is rebooted.
> 
> someone recommand me to use smbfs instead of nfs ( 5.4 at smp )...

Or if you actually care about the problem then provide some useful
debugging information that will allow someone to work on fixing it :-)

See a previous reply to Vivek where I explained what is needed to help
debug this kind of problem.

Kris
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