--- 60-persistent-storage.rules.orig	2012-03-13 23:43:26.000000000 -0400
+++ 60-persistent-storage.rules	2012-03-15 22:22:22.000000000 -0400
@@ -14,7 +14,7 @@ ACTION=="add", SUBSYSTEM=="module", KERN
 SUBSYSTEM!="block", GOTO="persistent_storage_end"
 
 # skip rules for inappropriate block devices
-KERNEL=="fd*|mtd*|nbd*|gnbd*|btibm*|dm-*|md*", GOTO="persistent_storage_end"
+KERNEL=="ploop*|fd*|mtd*|nbd*|gnbd*|btibm*|dm-*|md*", GOTO="persistent_storage_end"
 
 # ignore partitions that span the entire disk
 TEST=="whole_disk", GOTO="persistent_storage_end"