topic Re: Increase volume disk in Operating System - HP-UX

Increase volume disk

Yaroki — Mon, 18 Jul 2011 12:53:19 GMT

Hello,

I would would like to increase size on /dev/vg00/lvol9 but its mounted by nfs (auto_master) on /scc directory.

I tried to unmount it but it the device is busy and could not be unmounted.

How can I perform the action?

BR,

Yali.

Re: Increase volume disk

Pete Randall — Mon, 18 Jul 2011 12:57:37 GMT

You would have to increase the size on the NFS server that owns the disk - you can't do it on the NFS client that is mounting the disk.

As far as unmounting it is concerned, you would have to eliminate all open references to it, which can be just about impossible. Usually the easiest way is to reboot.

Re: Increase volume disk

Naj — Mon, 18 Jul 2011 13:27:29 GMT

Hi,

>I tried to unmount it but it the device is busy and could not be unmounted

Please try

#df /dev/vg00/lvol9

See the output, did you getting any error?what error is that?

#fuser -ku (local folder)

Once it's done, try to umount and if the issue remain same, you should reboot the server

Thanks

Naj

Re: Increase volume disk

Steven E. Protter — Mon, 18 Jul 2011 14:08:36 GMT

Shalom,

You would need to shut down the auto_master service, probably all NFS services as a minimum to get the umount to work.

I would suggest scheduling a maintenance window during which you can bring down necessary services to perform this task.

You might find this easier to perform after a reboot into hpux -lm <logical volume maintenance mode> from the system console.

SEP

Re: Increase volume disk

Pete Randall — Mon, 18 Jul 2011 14:11:39 GMT

> You would need to shut down the auto_master service,

Sorry - not exactly true. If no one is referencing the mount point you can manually unmount it. However, another reference to it will cause it to be automatically remounted.

Re: Increase volume disk

Steven E. Protter — Mon, 18 Jul 2011 22:02:48 GMT

Agreed. Change need to "It would be easier" I am assuming the issue you are running into is because the mount point is active.

Low graphics smiley.

:-)

Re: Increase volume disk

Arunabha Banerjee — Tue, 19 Jul 2011 16:15:35 GMT

If you are running HP-UX 11.11 or 11.23 then you need to reboot the server because most of the time it is very difficult to unmount nfs mount point in these HP-UX version. Please try to follow the steps:

# fuser /scc

Now try to kill all the PID using this directory.

# fuser -kuc /sec ( It will kill all the PID forcefully)

Still if you are not able to unmount or might some PID still using this directory then there is no other way and you have to reboot.

If you are using HP-UX 11.31 there is a new option for forcefully unmount

# umount -f /sec

Please let me know still if you have any difficulties.

Re: Increase volume disk

Yaroki — Wed, 20 Jul 2011 06:09:21 GMT

Thank you for your replies.

Actually I'm holding 2 old HP-UX versions: B.10.20 and B.11.11.

Should I reboot the system into hpux -lm and then run the following?

#f user /scc

# fuser -kuc /sec

Or should I do it on the casual root mode?

BR,

Yali

Re: Increase volume disk

Dennis Handly — Wed, 20 Jul 2011 07:35:03 GMT

>Should I reboot the system into hpux -lm and then run the following?

#fuser /scc

Once you rebooted, usually no need to use fuser.

Re: Increase volume disk

Arunabha Banerjee — Wed, 20 Jul 2011 12:50:27 GMT

As Dennis Handly already confirmed that if you are rebooting this server then no need to run this command. So before rebooting the server just run the fuser command as posted earlier and if you are lucky then it will work.

Re: Increase volume disk

UVK — Wed, 20 Jul 2011 17:22:20 GMT

If i get you right, your server is a NFS master.

cd /

fuser -ck /scc ----> to the kill the process holding the mount

then increase with the regular process of lvextend and fsadm