--- features: - | The libvirt driver now supports additional Cinder front-end QoS specs, allowing the specification of additional IO burst limits applied for each attached disk, individually. - quota:read_bytes_sec_max - quota:write_bytes_sec_max - quota:total_bytes_sec_max - quota:read_iops_sec_max - quota:write_iops_sec_max - quota:total_iops_sec_max - quota:size_iops_sec For more information, see the Cinder admin guide: https://docs.openstack.org/cinder/latest/admin/blockstorage-basic-volume-qos.html