NFS Error Message

[Siddhesh Talekar]

Hi Gurus,

Following is the error message I received today morning.

Jun 21 11:55:26 svr01234 vmunix: NFS server (pid1046@/net) not responding still
trying
Jun 21 11:55:26 svr01234 vmunix: NFS server (pid1046@/net) ok

There is no directory present under /net. I am not able to find why did this error message come? Server was booted 2 days back. And no FS is exported by this server, but if I give "showmount -a svr01234", I can see some FS mounted on other systems.

Your help would be highly appreciated.

Thanks & Regards,
Siddhesh.

[Adisuria Wangsadinata_1]

Hi Siddesh,

Check the url below (docID=NETUXKBRC00006283) :

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000069672013

Hope this can help you.

Cheers,
AW

[Siddhesh Talekar]

Hi Adisuria,

Thanks for your reply. But I am not able to open the document. Somehow my id is not working for the same.

Regards,
Siddhesh.

[Ermin Borovac]

/net is typically used by automounter, specifically by its special hosts map. If you look in /etc/auto_master you will probably find similar line.

/net -hosts -nosuid,soft,nobrowse

This allows you to automatically mount filesystems from other systems without configuring specific automounter entries.

For example, if has exported via NFS you can access it with

# cd /net//

This is on assumption that local system actually has permission to mount : via NFS.

[Devender Khatana]

Hi,

This message corresponds to non availability of some exported mount points to a client from a NFS server. The machine where you get this is a client in this case. See for the file systems mounted on that machine from remote systems. Allthough it is not a serious message & can be due to network congestion also.

HTH,
Devender

[V. Nyga]

Hi Siddhesh,

it looks like your server is running automounter.
Can you umount /net?
It should be no problem as long as no jobs have run under /net.
You can disable automounter in SAM.
In 'Disks and File System - File systems' you can disable it under 'Actions'.
There you can also see:
Mount directory: /net
Type: auto
Source: :

HTH
Volkmar

[Siddhesh Talekar]

Hi All,

My server is running automounter and as I mentioned earlier, no directory is present under /net. /etc/auto_master contains the default line "/net -hosts soft,nosuid". I understand that this is not a major problem, but need to explain this in detail. Please let me know when would automounter try to mount any FS from NFS server other than system boot. There is no NFS file system mounted currently on the server.

Thanks & Regards,
Siddhesh.

[Devender Khatana]

Hi,

NFS automounter will try to mount file system when you try to do a cd or try to access a file in imported file system.

Say
#cd /net
&
#more /net/abc/123
will try to mount /net if it is NFS automounted.

HTH,
Devender

[Muthukumar_5]

You can start auto_mounter by restarting nfs.server and nfs.client located in /sbin/init.d/

hth.

[Siddhesh Talekar]

Hi Devender,

Does that mean even if I don't have anything under /net and if I do "ll", then automounter will try to connect to NFS server. Which NFS server it will try in this case? My server is also NFS server itself. Will it try something with its own NFS server???

Regards,
Siddhesh.

[V. Nyga]

Hi again,

I can see such messages at my workstations too.
It seems like it's a short delay in response from a ws where a 'exportfs' was executed.
You get both messages in one second, so from this side no problem.

Can you identify that server (pid1046@/net)?
Can you remember an 'exportfs' there?

Maybe it's enough to disable automounter, but my opinion is: no problem at all.

V.

[Devender Khatana · Accepted solution]

Hi,

Yes it will try to mount it even when you try to list files. The serer which it will try will be known from your /etc/auto_master & /etc/auto.direct files. If it is the same server mentioned there it will try itself.

HTH,
Devender

[Siddhesh Talekar]

Hi,

I checked my command history and I didn't find any `exportfs` command. But, both the messages had come on the same time. pid 1046 is nothing but #automount -f /etc/auto_master command running in the background.

I don't have /etc/auto.direct file and /etc/auto_master contains only default line. i.e. /net -hosts soft,nosuid

Devender: Can you pls tell me which NFS server it will try in this case.

Thank you very much for all the support.

Regards,
Siddhesh.

[Devender Khatana]

Hi,

Not so sure but it should be its own. Do you have anything under it which you share with other hosts, if not try disabling it.
showmount -a will show all file systems exported from this host & mounted remotely.

HTH,
Devender

[Siddhesh Talekar]

Hi All,

This much data should be enough for me.

Thank you very much for all the support.


Regards,
Siddhesh.

[Siddhesh Talekar]

It helped me alot.