Comment 4 for bug 147216

I can also confirm this.

My scenario is this: I had all of my filesystems on one partition initially. I then decided to switch to using LVM across my other drives. I made the move in a Gutsy live CD, which went very smoothly - all data was migrated successfully and mount points set up fine. When I booted back into my Gutsy install however, the logical volumes weren't being activated. Martin's workaround seems to work fine.