NFS server <servername> not responding still trying
Hi gurus,
OS = SunOS 5.8
Not sure whether to post this in the scripting one or to advance and experts. Am posting on both since there is two things that am wanting to achieve.
Am currerntly having NFS server errors below. At this stage, I am not sure whether I am having a SAN storage issue or a network issue.
Am leaning towards a SAN storage issue at the moment. Reason I said this is because there is about 10-15 NFS mount from this server and the NFS error is not happening on all of them only for some of them.
If I do a df -k, it lists down the filesytem and then stop on when it start getting NFS server error. For the time being, am wanting to know how to isolate which mount points are having NFS issues, is there a command that I can run that will report on what mount points is NFS having problems with instead of running df which hangs midway?
I thought about writing a script that will scan the /etc/mnttab and run a df of each filesystem in the /etc/mnttab file but unfortunately when it get thru the one that it is having problem with, the script stalls and cannot continue. Is it possible to put a "timer" for the df <filesystem> and if it is taking more than 10secs, it terminates itself and then continue with doing the df of the next filesystem?
To illustrate what am wanting to do, for example, the /etc/mnttab file have the following mount entries:
So what am wanting to achieve is giving df maybe only 10 seconds and if it does not response, then terminate and process the next one in the list.
This is what I have in mind. Will it work?
On the other hand, of course it would be best if there is a command that I don't about that can check which of the NFS mounts are having problems and which aren't.
Any response / feedback will be much appreciated. Thanks in advance.
Last edited by newbie_01; 05-26-2011 at 04:53 AM..
Are the mounts that are failing on the same network/subnet? You may find that you are having some issues with the network and not really the client. Have you tried mounting these via TCP instead of UDP? If the TCP stops the alerts, I would take a look at the network.
If it's SAN issue, you should check if multipath is configured for the mountpoint / disk[s] failing.
Perhaps administrator forgot to configure path, one of your FC cards died and it cannot see LUN(S) used for this mountpoint.
Also check clients, you would want to umount that share from all clients using broken NFS share.
Is there anything in syslog ?
Basicely, NFS issues are visible clearly in the client's syslog and disk problems should be on server's syslog.
Using open source solutions (or your scripts) you can parse those logs on multiple servers and create notifications and such (email, web or whatever).
Hello,
I got the below error on my AIX system when doing a df command
NFS server xxx not responding still trying
We check and know that the NFS server is not available anymore. So we would like to unmount it, but no help.
/ > umount /mountpoint/
umount: Could not find anything to... (4 Replies)
Hi 2 ALL,
try to run NFS Server in AIX 7.1 :
1. Step by step on NFS Server node
mkdir /tmp/test
chgrp staff /tmp/test
chmod 775 /tmp/test-- create export directory (fs)
mknfsexp -d /tmp/test -t ro
exportfs -va
show mount -e
:/# exportfs -av
exports: 1831-187 re-exported /tmp/test... (4 Replies)
Server is accessible only via IPMI. SSH and web control panel is timeout. Takes several hours. Server dont have high load or suspicious processes.
I checked /etc/hosts.deny and restarted ssh, but nothing :( (0 Replies)
Greetings!
I'm testing a failover solution for NFSv4 on RHEL6 with latest updates.
My script umounts (umount -lf /share) the faulty NFS share if it sees that's hanging on the client (the NFS daemon is down on the NFS server) and it mounts the share from another healthy NFS server.
Sometimes... (4 Replies)
Hello,
I have a centos as nfs server, its name is centos_A.
After I finish the setup of the nfs server, the other linux can access this nfs server immediately via /net/centos_A/*
But,
My solaris 9 can not access /net/centos_A/* immediately. I have to leave /net/centos_A, and wait for about... (1 Reply)
At times I have unknown applications that hang for long periods of time over and over again after a network glitch. These are sometimes nfs4 but usually nfs3 clients and are always solaris10 systems.
nfs: NFS server hostname not responding still trying
nfs: NFS server hostname ok
nfs: NFS... (1 Reply)
I'm in panic mode. This isn't a production server, however, is very vital to office.
Sun V240 with Solaris 9, stopped accepting ftp sessions. When I tried to remote into box, it didn't respond. I have tried rebooting to boot in single user mode, no luck. I can see that it is ON but I can't get it... (3 Replies)
Hi
i am using HPUX11.00 and i am facing a starnge problem
after some time when i log on a message is coimng
NFS server not responding still trying....and it keps on coming there is no other way but to log out..form the server and start once again...
there is no file system exported or NFS... (3 Replies)