IBM Z and LinuxONE IBM Z

I have a file system that should only have been used by me and is mounted in the sysplex root on a mountpoint.   I can not unmount it and I have tried drain , immediate, force  and nothing will allow unmounts. 

Hey Scott,

What error messages are you seeing?  Anything from USS/zFS in any logs?

Scott

If you are mounted to the SYSPLEX root, you may not be able to unmount if the root is in Read/Only mode. In that case, you will need to change the root temporarily to Read/Write to perform the unmount. 

The other possibility is if another file is mounted off your mount point.  You can use the z/OS command D OMVS,F to check for files that might be mounted off of your path.  You would have to unmount any files connected to your path before trying to unmount the main file.

IBM provided the ZLSOF command, found in SYS1.SBPXEXEC, which hopefully is in your SYSPROC or SYSEXEC concatenation. Use it from TSO/ISPF to view all in use filesystems and you can see who is using the one you're interested in.

You can also issue the zlsof command from OMVS or a shell interface.

You something like 

zlsof | grep xxx.ZFS

where xxx.ZFS is the filesystem you are trying to unmount.

hope this helps