How to import an existing lvm

This gives you the basic commands you need. But you may not have to use the activate since your vg was not deactivate and exported.

http://www.tldp.org/HOWTO/LVM-…recipemovevgtonewsys.html
I have imported a VG from Fedora before. But I went through all the steps. Still have issue with VG name. Debian/OMV seems to be picky with the VG name. I had to rename the VG before I could import it.