How to unmount the NFS. Please help.

[Dennis Handly]

>I commented the respective entry in the /etc/fstab and /etc/mnttab

No need to edit mnttab since that is generated by the kernel.

[apple]

Denny,
If I didn't edit the /etc/mnntab, when i issue bdf, it still say NFS server B not responding still trying... errmmm hope to hear from u

[Dennis Handly]

>If I didn't edit the /etc/mnntab, when i issue bdf, it still say NFS server B not responding still trying

mnttab(4) implies that syncer(1m) will update mnttab every 30 seconds. So if you edit it, it will be put back. It also says if removed, it will recreate it. You may try renaming it to see what it puts back. Note the WARNINGS in mnttab(4).

So if editing mnttab did work for bdf, it wouldn't work for long.

[apple]

Denny,
You are right, the problem persist. what should i do now? i wanna have the permanent solution to it? is it umount? would really appreciate you could guide me. Thank you

[Dennis Handly]

>i wanna have the permanent solution to it?

As mentioned by Robert-Jan, you need to be on a newer OS or you have to reboot. And you already edited fstab.

[apple]

It seem I have to reboot it.
shall i use like this:
# umount -h kedidi -a
kedidi is the host name

[Dennis Handly]

>It seems I have to reboot it.

Yes, if the following umount doesn't work.

# umount -h kedidi -a

You don't mix -a with -h.
And I think you have tried it and it failed, so just edit /etc/fstab to remove them then reboot.

[Aneesh Mohan]

Hi ,

Check this link ,it may help you to solve this issue.

http://docs.hp.com/en/3929/ForciblyUnmountingNFSFilesystems.pdf

Thanks,
Aneesh

[Indrajit Bhagat]

check the
1. df -k
2. check whether there is any NFS file system mounted.
3. umount /mnt.
4. remove any entry made in /etc/fstab for NFS file system for that particular file sytsem.

[apple]

Mr Rajit,
When I tried to umount, it says:

# umount /backup
nfs umount: nfs_unmount: /backup: is busy

# fuser -cu /backup
/backup:

# uname -a
HP-UX puyuh B.11.00 A 9000/898 687663371 two-user license

I can't reboot the server, since the application are running some processses. If i can't really do, i have to wait till they allow us to do restart