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</head><body><p>Hi,<br><br>I am using Ceph as the backend for Cinder. Within Ceph we have defined 2 RBD pools (ssdvolumes, sasvolumes).<br>In OpenStack I created 2 Volume Types (ssd, sas). Each Volume Type has property "volume_backend_name='tripleo_ceph_<ssd|sas>'".<br><br>In the Cinder configuration I have the following backends configured:<br></p><p>[tripleo_ceph_ssd]<br>backend_host=hostgroup<br>volume_backend_name=tripleo_ceph_ssd<br>volume_driver=cinder.volume.drivers.rbd.RBDDriver<br>rbd_ceph_conf=/etc/ceph/ceph.conf<br>rbd_user=openstack<br>rbd_pool=ssdvolumes</p><p>[tripleo_ceph_sas]<br>backend_host=hostgroup<br>volume_backend_name=tripleo_ceph_sas<br>volume_driver=cinder.volume.drivers.rbd.RBDDriver<br>rbd_ceph_conf=/etc/ceph/ceph.conf<br>rbd_user=openstack<br>rbd_pool=sasvolumes<br><br>As you might have noticed, the backend name (tripleo_ceph_ssd) and the RBD pool name (ssdvolumes, not ssd) does not match. So far, we do not have any problems. But I want to correct the names and I do not want to have the mismatch anymore.<br><br>So I want to change the value of key volume_backend_name for both Volume Types (tripleo_ceph_ssd => tripleo_ceph_ssdvolumes).<br><br>I tried the following:<br>$ openstack volume type show 80cb25ff-376a-4483-b4f7-d8c75839e0ce<br>+--------------------+----------------------------------------+<br>| Field | Value |<br>+--------------------+----------------------------------------+<br>| access_project_ids | None |<br>| description | |<br>| id | 80cb25ff-376a-4483-b4f7-d8c75839e0ce |<br>| is_public | True |<br>| name | ssd |<br>| properties | volume_backend_name='tripleo_ceph_ssd' |<br>| qos_specs_id | None |<br>+--------------------+----------------------------------------+<br>$ <br><br><br>$ openstack volume type set --property volume_backend_name='tripleo_ceph_ssdvolumes' 80cb25ff-376a-4483-b4f7-d8c75839e0ce<br>Failed to set volume type property: Volume Type is currently in use. (HTTP 400) (Request-ID: req-5efaa5b7-910f-4802-8494-3115cfc4ab93)<br>Command Failed: One or more of the operations failed<br>$<br><br>How to solve my problem?<br><br>Thanks!<br><br>Sinan</p></body></html>