Can't unmount nfs mounted filesystem

[Kenny Henderson]

I'm unable to unmount a static nfs mounted filesystem on an HP-UX 10.20. system. I receive the following message:

umount: cannot unmount /risc/tools/pkgs : Block device required

Does anyone know of a workaround to this other than a reboot. Any assistance would be greatly appreciated.

Kenny H.

[Sanjay_6]

Hi Kenny,

If the NFS filesystem is mounted at /mount_point,

use
umount /mount_point

Hope this helps.

Regds

[John Bolene]

You don't umount the directory, you umount the device

example
umount /dev/vg01/lvol1

If there are any nfs users, you may have to kill the nfsd's also.

[harry d brown jr]

what does a bdf or mount show for the mount?

live free or die
harry

[Sanjay_6]

Hi Kenny,

There is a possibility that the there is no filesystem mounted at the directory you are trying to unmount. Do a "bdf" or "mount" to check the correct mount point.

John, you can use the "umount /mount_point" to unmount a filesystem.

Hope this helps.

Regds

[John Bolene]

Dang, I've been doing it the hard way all these years?

[Kenny Henderson]

Thanks for the replies, following are my reponses to the rplies I received:

* I have been using the unmount command as:

umount /risc/tools/pkgs

* I cannot unmount the device because this is an nfs mounted filesystem

* the output of bdf is as follows:

nfsserver:/risc/atools/apkgs/pkgs.HP-UXOS
3938272 2111294 1433151 60% /risc/tools/pkgs

[Kenny Henderson]

Following is an example of my fstab:

nfsserver:/risc/atools/abin/bin.HP-UXOS /risc/tools/bin nfs rw,hard,intr 0 0

nfsserver:/risc/atools/alib/lib.HP-UXOS /risc/tools/lib nfs rw,hard,intr 0 0
nfsserver:/risc/atools/apkgs/pkgs.HP-UXOS /risc/tools/pkgs nfs rw,hard,intr 0 0

[Adam Morris]

Have you tried
umount -F nfs -h -a
or
umount -F nfs

Adam

[Roger Baptiste]

hi,

try

umount -F nfs -v /risc/tools/pkgs

-> makes sure the type is got correctly and is in verbose mode.

If that also doesnt work,
#cd /risc/tools/pkgs
#ll (to see whether you can still access it).
#cd /
#fuser -cu /risk/tools/pkgs
-> is any user/process using it?

**

-raj

[Krishna Prasad]

umount /risc/tools/bin should work under normal times.

If a user is in the directory do
a fuser -uc to see if any process or using it.
Then kill the process and try to umount again.