---
upgrade:
  - |
    ``image_upload_use_cinder_backend = True`` is no longer set on the
    Cinder's default Ceph RBD backend, the common upstream default is
    now used (``False`` currently).
    See also `LP#1991516 <https://launchpad.net/bugs/1991516>`__
fixes:
  - |
    ``image_upload_use_cinder_backend = True`` is no longer set on the
    Cinder's default Ceph RBD backend. Related ERRORs and WARNINGs in
    Cinder and Glance logs are prevented.
    `LP#1991516 <https://launchpad.net/bugs/1991516>`__