[glance] import RBD image

Hi, There used to be a way to import RBD image with API v1, but not any more with v2. Is there any other way to do that? In case given QCOW2 image, It would be much faster and easier to convert it directly to RBD image with RAW format, than convert it to RAW format on local file system and upload the RAW image to Glance. Thanks! Tony