NFS Mount - Write Failed - RPC Timed Out

[Scott Guy_2]

Good afternoon everyone. Hoping I can pick the brains of some of the experts around here.

I am attempting an NFS mount from an HPUX 11.0 server to an HPUX 11iv2 server. I have the exports file set up on the NFS server and when I do a showmount -e on the client, the output shows the directory I wish to mount.
I perform the mount, but when I go to perform a write it says "cannot close : timed out" and dmesg shows "NFS write failed for server : RPC: Timed out"

The NIC is set to auto-neg running 1000Full. The switch is set to auto-neg.

I can NFS mount from the HPUX 11i server to the 11.0 server with no problems and move files around without issue.

I'm stumped!!!

[Dave Olker]

That certainly sounds like a networking configuration issue more than an NFS configuration issue. This appears to be a case where the two systems cannot reliably communicate.

Do you see any errors logged via either netstat or lanadmin on either side? If both systems are using Gigabit and within physical proximity of eachother can you try cabling the two systems to eachother to eliminate the network switch from the equation just as a test?

Can other NFS clients mount filesystems from the 11.0 server and successfully move files around?

Regards,

Dave

[avizen9]

hello
it should be network issue, what is the gateway for both hpux 11 & 11iv2? is they diff?

better take advice from network support, you can check network conectivity through netstat command. take a look man netstat there are few options for it.

[Anoop P_2]

You mentioned you have trouble trying to write. Are you able to read? If read gives no trouble, I would look at the patch level of both but specifically the 11.0 server.

[Dave Olker]

Anoop may be correct about patches, but I'll just say this.

From my experience, if a system has no problem reading but has a problem writing and the type of error is a TIMEOUT, that usually means the system in question is able to receive large packets (READ) but not send large packets (WRITE) and it usually boils down to an underlying networking problem.

[Scott Guy_2]

Thanks to everyone for their input thus far. I appreciate it.
I've looked at stats using lanadmin on both servers and don't see any errors or collisions reported on either lan interface. The MTU size is 1500 on both.

To answer the question asked, I can read the contents of the mounted filesystem fine. So, it mainly seems a write issue. I'm still working the issue. Also, the servers are in two different locations but using the same default gateway ane nw mask. It's quite possible it's a patching issue on the older server.
We're actually migrating from the 11.0 servers to the 11i servers, so this will more than likely be a moot point in a few weeks. We were just trying to use NFS to move some info back and forth.

[avizen9]

Hello Scott,
in your source system (hpux11.0) should have below entry in /etc/exportfs file

/home root=unixserver11iv2

here i am exporting /home to my unixserver11iv2 with full root access.

you can also try something like below.
/home -rw=unixserver11iv2

once you make changes can export again with below command.
exportfs -av

best of luck, thanks,