Changed dummy regex (in perfmon) to one that cannot match anything.

Signed-off-by: Thomas Sanders <[email protected]>

Author: thomassa

scripts/perfmon

@@ -623,7 +623,7 @@ class VMMonitor(ObjectMonitor):
             if variable_name == "cpu_usage": return "cpu[0-9]+"
             elif variable_name == "network_usage": return "vif_[0-9]+_[rt]x"
             elif variable_name == "disk_usage": return "vbd_(xvd|hd)[a-z]+_(read|write)"
-            elif variable_name == "fs_usage": return "__DUMMY__"      # match nothing
+            elif variable_name == "fs_usage": return "_$_DUMMY__"     # match nothing
             else: raise XmlConfigException, "variable %s: no default rrd_regex - please specify one" % variable_name
         elif config_tag == 'alarm_trigger_period':      return '60'   # 1 minute
         elif config_tag == 'alarm_auto_inhibit_period':