(In reply to Michael Chang from comment #34) > > Worse. :( > blkid doesn't provide info about PART "TYPE" GUID, it has only PART "ENTRY" > GUID, which is unique to every partition, not useful at all here. > Hmm it does here: $ blkid -p /dev/vda2 -o udev -s PART_ENTRY_TYPE ID_PART_ENTRY_TYPE=c12a7328-f81f-11d2-ba4b-00a0c93ec93b However doing the probing in the host environment as suggested by Ludwig sounds better IMHO.