Do not require -v

lvmsnapshot.py

@@ -438,7 +438,7 @@ def main():
         2: logging.INFO,
         3: logging.DEBUG
     }
-    loglevel = loglevels[min(3, max(0, args.verbose))]
+    loglevel = loglevels[min(3, max(0, args.verbose or 0))]
     logging.basicConfig(level=loglevel)
     Config.parse(Config.load())