--- a/plugins/mod_storage_none.lua	Tue Apr 04 01:31:51 2017 +0200
+++ b/plugins/mod_storage_none.lua	Tue Apr 04 18:46:51 2017 +0200
@@ -33,4 +33,8 @@
 	return function () end, 0;
 end
 
+function driver:delete()
+	return true;
+end
+
 module:provides("storage", driver);