Hi, I'm looking for a way to add the property volume_backend_name to an existing Volume Type which is in use. If I try to change this, I got the following error: root@control01rt:~# openstack volume type show test-type +--------------------+--------------------------------------+ | Field | Value | +--------------------+--------------------------------------+ | access_project_ids | None | | description | None | | id | 68febdad-e7b1-4d41-ba11-72d0e1a1cce0 | | is_public | True | | name | test-type | | properties | | | qos_specs_id | None | +--------------------+--------------------------------------+ root@control01rt:~# openstack volume type set --property volume_backend_name=ceph test-type Failed to set volume type property: Volume Type is currently in use. (HTTP 400) (Request-ID: req-2b8f3829-5c16-42c3-ac57-01199688bd58) Command Failed: One or more of the operations failed root@control01rt:~# Problem what I see is, that there are instances/volumes which use this volume type. Have anybody an idea, how I can add the volume_backend_name property to the existing Volume Type? thanks in advance! Regards Marc