i...should probably be using xs:ID?

aif/disk/lvm.py

@@ -1,13 +1,29 @@
+try:
+    import dbus
+    has_mod = True
+except ImportError:
+    # This is ineffecient; the native dbus module is preferred.
+    # In Arch, this can be installed via the 'extra' repository package "python-dbus".
+    import subprocess
+    has_mod = False
+##
+from aif.disk.block import Disk, Partition
+from aif.disk.luks import LUKS
+from aif.disk.mdadm import Array
+
+
 class PV(object):
     def __init__(self, partobj):
         self.devpath = None
         pass
 
-class LV(object):
-    def __init__(self, lv_xml, pv_objs):
-        pass
 
-class Group(object):
+class VG(object):
     def __init__(self, vg_xml, lv_objs):
         self.devpath = None
         pass
+
+
+class LV(object):
+    def __init__(self, lv_xml, pv_objs):
+        pass