Comment 12 for bug 460906

Possibly users should be warned in some prominent location that if they're mounting by UUID then leaving an LVM snapshot in place could result in that being mounted on reboot.

Changing the UUID of the 'real' disk during live operation simply because it's been snapshotted sounds reasonably insane - there's a case to be made for that being somewhat immutable after boot.

It might make more sense to filter via mapper and/or by-path (I'm using by-path in LVM's filter right now to sanely strain the multipath devices out from regular sd* devices) if you're expecting to have stale LVM snapshots around at boot time.

A user-configurable choice might make for reasonable compromise.