"unknown filesystem type 'LVM2_member'"?

Well, I’ve been testing distros and different partition schemes. And somehow I’ve thoroughly screwed up access to the internal storage drive.

I formatted the storage and encrypted the storage drive using Gnome Disks on the PureOS.

Now when I try to access the drive using another distro, I get the error “unknown filesystem type ‘LVM2_member’.”

The drive shows mounted in Gnome Disks. I can’t edit the mount options.

I suspect from one distro to the other, there must be some conflict in mapping to the disk. But deleting all the mapping except the primary and swap parition didn’t fix it.

At this point, I have no idea what might be going on.

Anyone have this problem? And know of some potential origins to investigate and/or a fix (hopefully a simple one).

P.S. Formatting the drive isn’t an option at this point.