topic Re: NFS serives running via udp / tcp part 2 in Operating System - HP-UX

NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 05:02:40 GMT

Hi All

In my earlier request to find a solution to
Why my server was running NFS under UDP and not TCP, I was given the following responses.

1. add NFS_TCP=1 in the nfsconf file
2. add -o proto=tcp in MOUNTD_OPTIONS within the nfsconf file.

I have now had chance to reboot my server, however starting nfs.server started but failed(!).

In rc.log the following message is posted.

Start NFS server subsystem
Output from "/sbin/rc3.d/S100nfs.server start":
----------------------------
starting NFS SERVER networking

starting up the rpcbind daemon
rpcbind already started, using pid: 917
Reading in /etc/exports
usage: /usr/sbin/rpc.mountd [-l log_file] [-t #] [-X #] [-p]
-t 1 Only log errors (default)
-t 2 Log errors and mount requests
-t 3 Internal tracing
-X 0 [HP-only] Disable pathname exclusion
FAILURE CODE: 10
starting up the NFS daemons
/usr/sbin/nfsd 30
starting up the Status Monitor daemon
rpc.statd already started, using pid: 1035
starting up the Lock Manager daemon
rpc.lockd already started, using pid: 1041
"/sbin/rc3.d/S100nfs.server start" FAILED

The server is still running NFS under UDP.

So my question is how do I get my server to mount NFS filesystems under TCP and not UDP.

Any help will be much appreciated.

regards

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 05:05:29 GMT

Did you add those settings in /etc/rc.config.d/nfsconf file? check that.

In the system terminal,

# /etc/init.d/nfs.server start
# /etc/init.d/nfs.core start

Is server started or having errors. check /var/adm/syslog/syslog.log file.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Steven E. Protter — Mon, 27 Mar 2006 05:06:51 GMT

Shalom Aslam,

Errors are in /var/amd/syslog/syslog.log

Seeing them would be helpful.

You hae changed the mount options for this server. You now need to mount nfs from a remote system and see if errors are generated in the local log and on the nfs client.

You may need to disable the options in the configuration file that refer to UDP. It would be helpful to see the whole config file.

SEP

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 05:14:15 GMT

Hi,

thanks for responding.

nfs.server is running.

Unfortunatle I dont know where or which file defines the fact that this server uses udp rather than tcp.

Another machine which mounts off this server can see the filesystems and mount it via tcp.

No errors shown in syslog or on the other machine's syslog.

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 05:16:19 GMT

Remove this -o proto=tcp from MOUNTD_OPTIONS in nfsconf file. It will work. You have to use this when you are doing mount. Restart the nfs.server and nfs.core as said in my previous reply.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 05:20:26 GMT

Hi Muthu

I have amneded the file and restarted but it still runs NFS under UDP.....

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 05:39:05 GMT

what are you getting for this:

# netstat -na | grep 2049

Is it tcp or udp. It has to be tcp.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 05:42:16 GMT

Hi

I am getting the following output

# netstat -na | grep 2049
tcp 0 0 192.168.1.1.2049 192.168.1.5.872 ESTABLISHED
tcp 0 0 *.2049 *.* LISTEN
tcp 0 0 192.168.1.1.2049 192.168.1.3.957 ESTABLISHED
tcp 0 0 192.168.1.1.2049 192.168.1.2.708 ESTABLISHED
tcp 0 0 192.168.1.1.1023 192.168.1.20.2049 ESTABLISHED
udp 0 0 *.2049 *.*
udp 0 0 *.2049 *.*

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 05:45:25 GMT

NFS server is running in tcp and udp as well. tcp 0 0 *.2049 *.* LISTEN says it is started. It is working.

Hope you have to remove -o proto=tcp in MOUNTD_OPTIONS for not making to get errors like,

usage: /usr/sbin/rpc.mountd [-l log_file] [-t #] [-X #] [-p]
-t 1 Only log errors (default)
....

"/sbin/rc3.d/S100nfs.server start" FAILED

in system reboot.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 05:49:48 GMT

Thanks Muthu

I dont get the errors.

When running nfsstat -m, I still get my filsystem running under UDP.

Is there any other way apart from manually mounting them using the "-o proto=tcp" option under mount ?

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 05:55:48 GMT

You can put proto=tcp in /etc/fstab file in respect to the file system.

NFS.Server is working fine. You have to change this setting only.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 06:01:19 GMT

Hi Muthu

Forgive my ignorance but where in the fstab file would I need to put this in?
The example below is part of the fstab

nas9000_private:/met /home/met nfs rw,suid 0 0

Cheers,

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 06:18:53 GMT

Change this,

nas9000_private:/met /home/met nfs rw,suid 0 0

to

nas9000_private:/met /home/met nfs rw,suid,proto=tcp 0 0

--
Muthu

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 06:20:15 GMT

Forgot,

# mount -a

after /etc/fstab setting,

will read /etc/fstab to set the new mount with tcp protocol.

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 06:33:05 GMT

Hi

I have changed it, and to test I have umounted and mounted that specific filesystem.

In fstab

nas9000_private:/den /home/den nfs rw,suid,proto=tcp 0 0

I then mount /home/den and get the following :

nfs mount: getaddr_nfs: nas9000_private: NFS service not responding(retry delay=5s)
nfs mount: retry: retrying(1) for: /home/den after 5 seconds
nfs mount: retry: giving up on: /home/den

Aslam

Re: NFS serives running via udp / tcp part 2

Muthukumar_5 — Mon, 27 Mar 2006 06:36:51 GMT

Did you restart nfs.server and nfs.core in NFS server side. Again, mount -a in nfs.client side. Are you seeing the same error?

--
Muthu

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 06:50:21 GMT

Hi Muthu

No I didn;t restart the nfs.core or nfs.server.

All I did was to umount /home/den
then did the same for mount /home/den.

Would it make a difference ?

Aslam

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 08:07:39 GMT

All

When I go into SAm and look at the nfs mounted file systems, it does report that it is using UDP.

HOwever if you modify it, it wont change it , if you remove and read the mount, changing the protocol to NFS results in ... yes you guessed it protocol udp.

I'm completely baffled

Re: NFS serives running via udp / tcp part 2

Zinky — Mon, 27 Mar 2006 09:21:02 GMT

Peace Aslam,

Let's start from the beginning. What exactly is your environment? Is your issue having to do with your HP-UX environment always having to mount NFS via UDP from your NFS server?

1. What is your NFS server? Is it a NAS or another UNIX Server?

2. What is your /etc/fstab entry on your server that pertains to the mount from your NFS server?

3. If your NFS server is a NAS - is it possible it's NFS service is restricted to UDP transport? This may very well explain why TCP does not work...

Hope this helps..

Re: NFS serives running via udp / tcp part 2

Aslam Ghumra_2 — Mon, 27 Mar 2006 09:35:39 GMT

Hi

This is hp-ux 11.11 v1 server where it serves out filesystem, to other hp-ux servers. However it also mounts filesystems from a windows NAS9000 servers. (Services for unix v3.5).

This server is similar to the other hp-ux servers but will only mount NFS filesystem using UDP. the other nodes all mount NFS under TCP ( strange eh! ).

The entry from the other server is :
nas9000_private:/met /home/met nfs rw,suid 0 0
which will mount via TCP.

The NFS NAS server, has an option to have TCP support which is selected, my other servers mount using tcp fine.

I hope that I have answered your queries.

Aslam