nfs client hanging

[Trond Myklebust]

On Tue, 2008-06-17 at 16:01 +0200, Guillaume Rousse wrote:
> Trond Myklebust a écrit :
> > However the fact that everything is being queued on the xprt_backlog
> > means that there is a heavy congestion, and that all the RPC slots are
> > full. It supports the suspicion that the server is failing to respond to
> > the client, and so the client requests are all backed up.
> > 
> > Does 'netstat -t' show the client as still being connected to the
> > server?
> I had to reboot the server, unfortunatly, I can't answer :(
> 
> However, I regulary have this in he logs, even right now after the reboot:
> Jun 17 14:17:13 chatelet kernel: RPC: failed to contact local rpcbind
> server (errno 5).
> 
> Despite rpcbind process currently running. With rpcdebug flags call & 
> bind (I choose those ones because I had no better clue, and all is a bit 
> too much verbose) activated, I have this:
> 
> Jun 17 14:27:28 chatelet kernel: RPC: failed to contact local rpcbind 
> server (errno 5).
> Jun 17 14:27:28 chatelet kernel: RPC:       registration status 
> -5/-532611276
> 
> is this related ?

No: the kernel will be talking to the rpcbind server on a completely
different socket, and normally it should not be using rpcbind/portmap to
figure out which port the filer's NFS server is using.

That said, have you set CONFIG_SUNRPC_BIND34 in your .config file?

Trond