The /opt file system needs to be extended. I know the basic commands, but /opt will not unmount. fuser shows nothing and I see no jobs running from /opt. If I need to take it down to single user mode to do this, then what is the best command? Any help is appreciated. Is there a way to stop all system processes except the shell without actually taking the machine down?

This would be best done single user.

You may get clues about processes using /opt from

find /opt/ -xdev -mtime -1 -exec ls -lad {} \;


Obviously make sure that you cd out of /opt yourself.

If you dont have a license for online jfs, you only can run your box in single user mode to extend filesystems.

Thanks. Yes, we did have to go to single user mode for the /opt file system extension. But, we got it done and all went well. thanks again.