diff -r 5e61994ce750 lib/plugins/stonith/external/libvirt
--- a/lib/plugins/stonith/external/libvirt	Fri Sep 04 14:20:38 2015 +0900
+++ b/lib/plugins/stonith/external/libvirt	Fri Sep 04 14:23:39 2015 +0900
@@ -208,7 +208,8 @@
 unset SSH_AUTH_SOCK
 
 # support , as a separator as well
-hostlist=`echo $hostlist| sed -e 's/,/ /g'`
+# hostlist is converted into a lower case.
+hostlist=`echo $hostlist| tr A-Z a-z | sed -e 's/,/ /g'`
 
 reset_method=${reset_method:-"power_cycle"}