I used OMV briefly during the 1.0 days before retreating like a coward to Windows Server. I'm back and determined to use it to replace that server, so I'm setting up OMV in a VM to iron out my problems. I've installed OMV 3.0.85, run all updates and created a small pool using the unionfilesystems plugin. Then I've created a user, created two shared folders in that pool with everyone having full access, and attempted to setup the plexmediaserver plugin.
It installed without error, but upon moving the database volume to the pool and enabling the plugin, the service can not start. Please see attached screenshots. Any help would be much appreciated.