The extend API call is asynchronous, so that just returns whether the request was successfully received or not. But I agree, a user message should be added for async failures like this, similar to the work done in https://github.com/openstack/cinder/commit/848ff3ad86d03368ed3d1ce361bc55f5b10d3bd8
The extend API call is asynchronous, so that just returns whether the request was successfully received or not. But I agree, a user message should be added for async failures like this, similar to the work done in https:/ /github. com/openstack/ cinder/ commit/ 848ff3ad86d0336 8ed3d1ce361bc55 f5b10d3bd8