What UDEV rules should be set up? We don't have any custom udev rules in place. And during the clone process we see the filesystems get successfully discovered and (with devicemapper and multipath) mapped to /dev/dm-0, /dev/dm-1, etc..
The filesystems on those devices do have a uuid that can be viewed with the blkid command, if that is the uuid you mean?
The devices are also found in /dev/mapper/<id> where <id> seems to be some unique id, different from the blkid
After discovery takes place and those lun's are mapped to multipath devices, the cloning process fails with the above-mentioned error and the lun's are removed again.. (without actually removing the DM devices on the OS first so multipath/dm start complaining about all the paths)