Techies ..need ur help urgently

[Anil C. Sedha]

I have a server on which a NFS mount has got hung. I cannot kill it or stop the process.

I am also not able to login from any other id except root. My logins are using NIS placed on another server than this.

I have tried nfs.client stop. nfs.core stop and many other options. Can anyone guide me as to what the problem can be.

Pls respond urgently. i am not able to kill cron jobs also, and my cpu load is increasing.

regards

[Anil C. Sedha]

the hp engineer has also tried out numerous things.. pls let me know if u would like any further info.

he also has not been able to do anything. only option i have is to reboot, but i want to resolve this issue before that.

regards

[James R. Ferguson]

Hi Anil:

Sorry, you need to reboot. You cannot kill a process that is hung waiting for an I/O.

A very common (mistake) when dealing with PFS mounted filesystems (as commonly used with Oracle CDROMs) is to kill the PFS daemons. This leads to the same situation and symptoms you now face.

Regards!

Again, sorry, I you need to reboot.

...JRF...

[Anil C. Sedha]

Hi James,

are u pretty sure.. that there is no other option. this issue has happened previously too and i cannot afford to boot the server during daytime atleast.

thanks

[Uday_S_Ankolekar]

Hi,
I hate to say this but your only option is to reboot ,since the NFS processes are blocked waiting on I/o they are not going to notice your signals

-USA..

[Rodney Hills]

You may want to be sure to do "soft" mounts in your /etc/fstab file. That way if a host is not accessable, you won't hang on I/O. You can specify a timeout.

-- Rod Hills

[Anil C. Sedha]

ok..thanks friends

i shall now eventually have to reboot.

[Bill Hassell]

Something you need to reconsider: is NFS reliable enough to be used in a production server. I would never allow imported filesystems (including PFS) on a production server and would limit exported filesystems to read-only to avoid the problem you have just seen.