
The sample of block_device_mapping_v2 contains uuid as a parameter but there is not any explanation of the parameter. This patch adds it to api-ref. The following is for explaining the parameter from the code. As the following code, source_type is "image" and api_dict["image_id"] can be glance image-id on the sample case. https://github.com/openstack/nova/blob/master/nova/block_device.py#L197 api_dict[source_type + '_id'] = device_uuid The "image_id" is used for getting image metadata from Glance: https://github.com/openstack/nova/blob/master/nova/compute/api.py#L1072 image_id = bdm['image_id'] image_meta = self.image_api.get(context, image_id) Change-Id: I83badab07446c2b1e55cc3b29a3ba9476efc179d