+ g.mkfs ("ext2", "/dev/VG/LV1");
+
+ Map<String,String> m = g.list_filesystems ();
+ assert m.containsKey ("/dev/VG/LV1");
+ assert m.size () == 2;
+
+ assert m.get ("/dev/VG/LV1").equals ("ext2");
+ assert m.get ("/dev/VG/LV2").equals ("unknown");
+