topic NFS error in Operating System - Linux

NFS error

Ani1980 — Thu, 14 Jul 2011 18:29:04 GMT

HI experts,

Everyday we are receiving lots of alerts (nfs: server yyy02 not responding, timed out/nNODENAME:xxx06.xxx.com) …while i check i see that i am able to access the nfs server ...this is what i get from /var/log/messages

Jul 12 01:34:01 xxx06 kernel: nfs: server yyy02 not responding, timed out

Jul 12 01:34:01 xxx06 kernel: nfs_statfs: statfs error = 5

Jul 13 01:34:03 xxx06 kernel: nfs: server yyy02 not responding, timed out

Jul 13 01:34:03 xxx06 kernel: nfs_statfs: statfs error = 5

Jul 14 01:34:03 xxx06 kernel: nfs: server yyy02 not responding, timed out

Jul 14 01:34:03 xxx06 kernel: nfs_statfs: statfs error = 5

In fstab the timeout value is 50.

yyy02:/MicroStrategy/Desktop/XSLs/Maintenance /yyy02/Maintenance nfs soft,tcp,intr,timeo=50 0 0

I think for a few sec. the client is not able to communicate with the nfs server so that it is showing error msg. Now if i increase the timeout value will it solve the issue?

xxx06:-Red Hat Enterprise Linux AS release 4 (Nahant Update 9)
2.6.9-89.31.1.ELsmp

yyy02:- windows server

Please let me know your concern.

Regards,

Ani

Re: NFS error

Steven E. Protter — Thu, 14 Jul 2011 21:03:16 GMT

Shalom,

The answer to your question is you can't be sure.

If the source of the problem is a network issue, time timeout may help.

If the source of the problem is the NFS server is flakey, the error message is legimitate and needs to be dealt with at the server.

It all depends on WHY the problem is happening.

SEP

Re: NFS error

Ani1980 — Fri, 15 Jul 2011 05:02:29 GMT

Tnx for your quick response.As the nfs server is in windows so i don't have the permission to touch it.Current timeout value is 50. could you please suggest what should i put here...can i put 90.Anotherthing once i change the value in fstab which service i have to restart ? nfs & portmay? will it work

#service nfs restart

#service portmap restart

IT is production system

Regards,

Ani

Re: NFS error

Ani1980 — Mon, 18 Jul 2011 05:42:42 GMT

HI Steve,

Could you please reply..

Re: NFS error

Naj — Mon, 18 Jul 2011 06:11:48 GMT

Hi Ani,

>while i check i see that i am able to access the nfs server

Seems like there is no issue with nfs i believe you can mount to specific folder and to confirm this you may execute command df to mount point.

1.It's slightly issue with internal NW where and you might need to check with your network team why always getting such error.

2. Based on log, it's constantly timeout after 1 hour, you may check internally what is process running on your network / server during that time.

3. If there everything is ok i mean from server/network side, how about if your try to increase value time out > 1 hour ( i don't think this is good practice to implement).

Thanks

Naj

Re: NFS error

Naj — Mon, 18 Jul 2011 06:16:23 GMT

additional to your question

>which service i have to restart ? nfs & portmay? will it work

You always can restart internet service

#service xinetd (restart/start/stop/status)

Thanks