I am getting such errors in cinder logs while using EMC driver.

2016-10-20 13:47:06.654 18506 ERROR cinder.volume.drivers.emc.scaleio [req-6061f8a1-65da-4b81-b419-bb67578179ac - - - - -] Error getting domain id from name default: Not found.

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service [req-6061f8a1-65da-4b81-b419-bb67578179ac - - - - -] Error starting thread.

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service Traceback (most recent call last):

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 680, in run_service

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     service.start()

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/cinder/service.py", line 150, in start

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     self.manager.init_host()

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 436, in init_host

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     self.driver.init_capabilities()

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/cinder/volume/driver.py", line 656, in init_capabilities

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     stats = self.get_volume_stats(True)

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/emc/scaleio.py", line 872, in get_volume_stats

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     self._update_volume_stats()

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/emc/scaleio.py", line 774, in _update_volume_stats

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service     raise exception.VolumeBackendAPIException(data=msg)

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Error getting domain id from name default: Not found.

2016-10-20 13:47:06.655 18506 ERROR oslo_service.service

2016-10-20 13:47:06.666 18427 INFO oslo_service.service [req-a1d144da-8b99-4c8b-ba54-3a572653320a - - - - -] Child 18506 exited with status 1

2016-10-20 13:47:06.675 18507 INFO cinder.service [-] Starting cinder-volume node (version 8.0.0)

2016-10-20 13:47:06.677 18507 INFO cinder.volume.manager [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] Starting volume driver ScaleIODriver (2.0)

2016-10-20 13:47:06.679 18507 WARNING cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] Verify certificate is not set, using default of False.

2016-10-20 13:47:06.680 18507 INFO cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] ScaleIO get domain id by name request: https://x.x.x.x:443/api/types/Domain/instances/getByName::default.

2016-10-20 13:47:06.681 18507 INFO cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] username: admin, verify_cert: False.

2016-10-20 13:47:06.717 18507 INFO cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] Token is invalid, going to re-login and get a new one.

2016-10-20 13:47:07.529 18507 INFO cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] Going to perform request again https://x.x.x.x:443/api/types/Domain/instances/getByName::default with valid token.

^[2016-10-20 13:47:08.375 18507 INFO cinder.volume.drivers.emc.scaleio [req-860caa7b-79bc-4b45-b9b4-46b3ad07a93d - - - - -] Get domain by name response: {"message":"Not found","httpStatusCode":500,"errorCode":3}