For anyone finding this bug, the fix in bug #38409 (restoring the edgy workaround) makes the immediate problem go away.
However, the udev rules have changed since that bug - the workaround simply tells udev to ignore any devices starting with dm-, whereas the correct fix lies with feisty's udev rules specifically for LVM in 65 -persistent-storage.rules and 70-lvm.rules. -- [feisty] failures when creating snapshots "in use: not deactivating" https://launchpad.net/bugs/84672 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
