restarting system via ssh access when shutdown does not work
 

Hello,

I did something foolish:

After NFS mounting some system folders (i.e. lib, usr) of a slave cluster node to /lib & /usr located on the master cluster server I got into some problems:

I forgot Ubuntu 10.04 was installed on this particular slave node, while the master node runs 9.10.
Now, I am not able to unmount these folders using umount, or restart the system using shutdown, I get some error: " /lib/libblkid.so.1: version `BLKID_2.17' not found".

Is there an alternative way to unmount these NFS shares, or to restart the system to undo the mounts ?

The systems are located elsewhere, so just physically restarting the system would not be the preferred option..

Thanks in advance.

coen

A 'reboot -f -n' should do it. See 'man reboot' for details.

This is how to unmount nfs.
http://manpages.ubuntu.com/manpages/...unt.nfs.8.html

Shutdown may render it off not to restart.