The code should be doing connector.get('host') so it returns None. I've seen similar problems with the storwize driver not getting host safely and then changes being made in nova to workaround it (thinking with the hyper-v driver).
So I'm going to change this to a cinder bug and fix there.
I've confirmed the problem is down in the cinder storwize driver here:
https:/ /github. com/openstack/ cinder/ blob/2013. 2/cinder/ volume/ drivers/ storwize_ svc.py# L476
The code should be doing connector. get('host' ) so it returns None. I've seen similar problems with the storwize driver not getting host safely and then changes being made in nova to workaround it (thinking with the hyper-v driver).
So I'm going to change this to a cinder bug and fix there.