Merge pull request #673 from CongLi/balloon_service

balloon_service: fix a logical error of blnsvr.exe status.

qemu/tests/balloon_service.py

@@ -51,7 +51,8 @@ def run(test, params, env):
         logging.debug("Check balloon service status.")
         output = session.cmd_output(status_balloon_service)
         if re.search(r"running", output.lower(), re.M):
-            if re.search(r"stop", output.lower(), re.M):
+            logging.debug("Balloon service is already running !")
+        elif re.search(r"stop", output.lower(), re.M):
             logging.debug("Run Balloon Service in guest.")
             try:
                 run_balloon_service = params["run_balloon_service"] % drive_letter