I have a Rocky installation where glance is configured with multiple backends. This [*] is the relevant part of the glance configuration. I now need to dismiss the file backend and move the images-snapshots stored there to rbd. I had in mind to follow this procedure (already successfully tested with an older version of OpenStack): 1) download the image from the file backend (glance image-download --file <file> <imageid> 2) upload the file <file> to rbd, relying on this function: https://github.com/openstack/glance_store/blob/stable/rocky/glance_store/_dr... 3) glance location-add --url rbd://xyz <imageid> 4) glance location-delete --url file://abc <imageid> I have problems with 3: # glance --debug location-add --url rbd://8162f291-00b6-4b40-a8b4-1981a8c09b64/images-prod/6bcc4eab-ed35-42dc-88bd-1d45de73b628/snap 6bcc4eab-ed35-42dc-88bd-1d45de73b628 ... ... DEBUG:keystoneauth.session:PATCH call to image for https://cloud-areapd.pd.infn.it:9292/v2/images/6bcc4eab-ed35-42dc-88bd-1d45d... used request id req-6c0598cc-582c-4ce7-a14c-5d1bb6ec4f14 Request returned failure status 400. DEBUG:glanceclient.common.http:Request returned failure status 400. Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/glanceclient/shell.py", line 687, in main OpenStackImagesShell().main(argv) File "/usr/lib/python2.7/site-packages/glanceclient/shell.py", line 591, in main args.func(client, args) File "/usr/lib/python2.7/site-packages/glanceclient/v2/shell.py", line 749, in do_location_add image = gc.images.add_location(args.id, args.url, metadata) File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 448, in add_location response = self._send_image_update_request(image_id, add_patch) File "/usr/lib/python2.7/site-packages/glanceclient/common/utils.py", line 598, in inner return RequestIdProxy(wrapped(*args, **kwargs)) File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 432, in _send_image_update_request data=json.dumps(patch_body)) File "/usr/lib/python2.7/site-packages/keystoneauth1/adapter.py", line 340, in patch return self.request(url, 'PATCH', **kwargs) File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 377, in request return self._handle_response(resp) File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 126, in _handle_response raise exc.from_response(resp, resp.content) HTTPBadRequest: 400 Bad Request: Invalid location (HTTP 400) 400 Bad Request: Invalid location (HTTP 400) As far as I can see with the "openstack" client there is not something to add/delete a location. So I guess it is necessary to change the 'direct_url' and 'locations' properties. If I try to change the direct_url property: # openstack image set --property direct_url='rbd://8162f291-00b6-4b40-a8b4-1981a8c09b64/images-prod/6bcc4eab-ed35-42dc-88bd-1d45de73b628/snap' 6bcc4eab-ed35-42dc-88bd-1d45de73b628 403 Forbidden: Attribute 'direct_url' is read-only. (HTTP 403) Any hints ? Thanks, Massimo [*] [default] ... enabled_backends = file:file,http:http,rbd:rbd show_image_direct_url = true show_multiple_locations = true [glance_store] default_backend = rbd [file] filesystem_store_datadir = /var/lib/glance/images/ [rbd] rbd_store_chunk_size = 8 rbd_store_ceph_conf = /etc/ceph/ceph.conf rbd_store_user = glance-prod rbd_store_pool = images-prod