I did some initial testing with the default parameter value for refresh_conn_info set to True in _get_instance_block_device_info() and unfortunately an instance with rbd volume attached does not successfully stop/start after ceph-mon's are moved to new IP addresses.
I did some initial testing with the default parameter value for refresh_conn_info set to True in _get_instance_ block_device_ info() and unfortunately an instance with rbd volume attached does not successfully stop/start after ceph-mon's are moved to new IP addresses.