umount busy...!! NFS

[jackfiled]

Hi all
Happy christmas..~~ and New year

we have systems with NFS
when I umount the mount point which is NFS,
the mounted point NFS is busy and can not be umounted
what can I do to umount NFS

[Martin P.J. Zinser]

Hello,

umount -f maybe?

Merry christmas,

Martin

[Francisco J. Soler]

Hi, Merry christmas.

Check if there are some terminals or programs that are using this resource. Free it and try to umount.

Frank.

[jackfiled]

Can you tell me how to check the file system used by some processes.?

[Francisco J. Soler · Accepted solution]

Hi jackfiled, you can try (like superuser (su -)) the command fuser. For example:

# fuser -um /some_mounted_file_system

You get the proccess pid and the user. If you want to know which proccess is you can do an additional ps ax.

# ps ax | grep pid

Hope this helps.
Frank.

[Steven E. Protter]

Its possible to create a deadly NFS embrace.

Simple example, if server1 tries to mount an export on server2 and server2 tries to mount an export on server1, how do you bring either server down without messing with the other.

Widespread use of NFS mounts requires a plan.

SEP

[jackfiled]

thank you for all of your reply