[CentOS] NFS problem

[Tony Molloy]

On Wednesday 19 September 2012 23:22:13 Mark LaPierre wrote:
> On 09/19/2012 03:00 PM, m.roth at 5-cent.us wrote:
> > We've been seeing what I gather is an old, traditional problem:
> > kernel: lockd: server<ip address>  not responding, timed out
> >
> > The things I've found, googling, mostly involve rebooting the NFS
> > server, and I can't do that, it's a home directory server for a
> > *bunch* of people, and this is only one person's workstation.
> >
> > Are there other solutions I haven't found yet?
> >
> >         mark


I see the same problem with our student labs every now and then. I 
always assumed it was caused by a student power recycling the client 
rather than doing a clean reboot to get to Windoze ( dual boot 
machines ;-( ) causing NFS to get confused, NFSv3.

It doesn't seem to cause any problems just fills up the server logs 
with useless messages. Rebooting the client to Linux usually fixes the 
problem.

Tony

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> Have you checked your network connectivity from the problem machine
>  to the NFS server and back?  If other machines on this NFS server
>  have no issues then you can eliminate the NIC on the server from
>  suspicion, but the NIC on the problem machine might be having a
>  problem.  Check your cable connections while you're at it.
> 
> How are you mounting the NFS share?  If you are using AutoFS your
>  mount may be timing out.  Does the problem machine access the
>  share actively or does it tend to sit for a while between access
>  attempts?
>