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#1 (**permalink**) 01-05-2008, 05:13 AM

Hello all,

I have a very strange problem with my CWS, the NFS server on this is very
important for me to install
some nodes and save some mksysb by the NFS protocol.

Since 3 weeks ago, a strange NFS problem was appeared, I was checked
all parameters and the rpcinfo -u server nfs was always timeout .

My syslogd tells me that the nfs server has bad sendreply, I compared the
tcp ip with some other cws servers and found no difference.

I tried to delete these ethernet interfaces and reconfigure them and the
miracle appear, I can mount some shared filesytem.
But when I reboot my serveur, the problem appears again and sometime my
server crash.

I would to know if someone has a good solution.

Sorry for my very bad English.

Thx.

#2 (**permalink**) 01-05-2008, 05:13 AM

"hendrix" <hendrix.new@altern.org> wrote in message news:<419d02b6$0$10262$626a14ce@news.free.fr>...
> Hello all,
>
> I have a very strange problem with my CWS, the NFS server on this is very
> important for me to install
> some nodes and save some mksysb by the NFS protocol.
>
> Since 3 weeks ago, a strange NFS problem was appeared, I was checked
> all parameters and the rpcinfo -u server nfs was always timeout .
>
> My syslogd tells me that the nfs server has bad sendreply, I compared the
> tcp ip with some other cws servers and found no difference.
>
> I tried to delete these ethernet interfaces and reconfigure them and the
> miracle appear, I can mount some shared filesytem.
> But when I reboot my serveur, the problem appears again and sometime my
> server crash.
>
> I would to know if someone has a good solution.
>
> Sorry for my very bad English.
>
> Thx.

Can you post output from

netstat -vn

lsattr -El en0 -H <- I assume this is the current NIC you use at the server.

#3 (**permalink**) 01-05-2008, 05:14 AM

"hendrix" <hendrix.new@altern.org> writes:

>Since 3 weeks ago, a strange NFS problem was appeared, I was checked
>all parameters and the rpcinfo -u server nfs was always timeout .

>My syslogd tells me that the nfs server has bad sendreply, I compared the
>tcp ip with some other cws servers and found no difference.

Together, these sound to me like a routing issue. Can you ping the NFS
server from the clients? Can you ping the clients from the server? It
sounds as if packets can make it from the clients to the server, but not
the other way. (netstat -rn)

Does rpcinfo work if you run it on the server itself? (rpcinfo -p)

Do any of the networks involved have funny MTUs? (netstat -in)

Is there a firewall somewhere?

--
Dale Talcott, Rosen Center for Advanced Computing, Purdue University
aeh@quest.cc.purdue.edu http://quest.cc.purdue.edu/~aeh/

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AIX 5.2 NFS problem