tail -f /var/log/cinder/cinder-volume.log
2016-01-07 20:11:11.917 6724 TRACE cinder   File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 121, in wait
2016-01-07 20:11:11.917 6724 TRACE cinder     return hubs.get_hub().switch()
2016-01-07 20:11:11.917 6724 TRACE cinder   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 293, in switch
2016-01-07 20:11:11.917 6724 TRACE cinder     return self.greenlet.switch()
2016-01-07 20:11:11.917 6724 TRACE cinder   File "/usr/lib/python2.7/dist-packages/cinder/openstack/common/loopingcall.py", line 124, in _inner
2016-01-07 20:11:11.917 6724 TRACE cinder     idle = self.f(*self.args, **self.kw)
2016-01-07 20:11:11.917 6724 TRACE cinder   File "/usr/lib/python2.7/dist-packages/cinder/volume/drivers/vmware/api.py", line 83, in _func
2016-01-07 20:11:11.917 6724 TRACE cinder     raise excep
2016-01-07 20:11:11.917 6724 TRACE cinder URLError: <urlopen error [Errno 111] ECONNREFUSED>
2016-01-07 20:11:11.917 6724 TRACE cinder