--- features: - | Parameter `scheduler/query_placement_for_image_type_support` is enabled by default for all deployments. Setting it causes the scheduler to ask Placement only for compute hosts that support the `disk_format` of the image used in the request which is beneficial for example, the libvirt driver, when using Ceph as an ephemeral backend, does not support `qcow2` images (without an expensive conversion step).