Can't create images in Glance or volumes in Cinder backed by Ceph

Issue

• Unable to create images or volumes on the same Ceph backend that worked with OSP 9.
• Observe the following error in /var/log/cinder/volume.log:

2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager Traceback (most recent call last):
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     result = task.execute(**arguments)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/cinder/volume/flows/manager/create_volume.py", line 829, in execute
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     model_update = self._create_raw_volume(volume, **volume_spec)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/cinder/volume/flows/manager/create_volume.py", line 808, in _create_raw_volume
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     return self.driver.create_volume(volume)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/rbd.py", line 562, in create_volume
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     features=client.features)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     result = proxy_call(self._autowrap, f, *args, **kwargs)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     rv = execute(f, *args, **kwargs)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     six.reraise(c, e, tb)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager     rv = meth(*args, **kwargs)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager   File "rbd.pyx", line 528, in rbd.RBD.create (rbd.c:3227)
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager FunctionNotSupported: error creating image
2017-01-13 14:31:56.600 158089 ERROR cinder.volume.manager