The other day I acquired a unique issue. We had to re-install the OS on a server and then attach the old drives to retrieve the data. Sometimes this isn’t an issue, sometimes it is. In this case, both logical volumes had the same name. I re-named the second logical volume with this command:
vgrename T0Xg9i-11uz-Am7t-VbEj-sfhj-0WC6-PZSYhO VolGroup0
The syntax is like this:
vgrename UID NewName
After that, I was able to mount the second LV and the customer was able to retrieve their data.