Stating that a new process has been started but old one is still running is not a warning.

slapos/grid/utils.py

@@ -146,7 +146,7 @@ def setRunning(pid_file):
     # XXX This could use psutil library.
     if pid is not None and os.path.exists("/proc/%s" % pid):
       # In case process is present, ignore.
-      logger.warning('New slapos process started, but another slapos '
+      logger.info('New slapos process started, but another slapos '
                   'process is aleady running with pid %s, exiting.' % pid)
       sys.exit(10)
     logger.info('Existing pid file %r was stale one, overwritten' % pid_file)