Changed to make 'output' the default log level.

bin/mn

@@ -198,7 +198,8 @@ class MininetRunner( object ):
         if LEVELS[self.options.verbosity] > LEVELS['output']:
             print ( '*** WARNING: selected verbosity level (%s) will hide CLI '
                     'output!\n'
-                    'Please restart Mininet with -v [debug, info, output].' )
+                    'Please restart Mininet with -v [debug, info, output].'
+                    % self.options.verbosity )
         lg.setLogLevel( self.options.verbosity )
 
         # validate environment setup

mininet/log.py

@@ -18,7 +18,7 @@ LEVELS = { 'debug': logging.DEBUG,
           'critical': logging.CRITICAL }
 
 # change this to logging.INFO to get printouts when running unit tests
-LOGLEVELDEFAULT = logging.WARNING
+LOGLEVELDEFAULT = OUTPUT
 
 #default: '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
 LOGMSGFORMAT = '%(message)s'

mininet/test/test_nets.py

@@ -10,6 +10,7 @@ from mininet.node import Host, Controller, ControllerParams
 # from mininet.node import KernelSwitch
 from mininet.node import UserSwitch, OVSKernelSwitch
 from mininet.topo import SingleSwitchTopo, LinearTopo
+from mininet.log import setLogLevel
 
 SWITCHES = { 'user': UserSwitch,
              'ovsk': OVSKernelSwitch,
@@ -56,4 +57,5 @@ class testLinear( unittest.TestCase ):
 
 
 if __name__ == '__main__':
+    setLogLevel('warning')
     unittest.main()