--- features: - | Introduce new compute role based parameter NovaGlanceEnableRbdDownload to enable direct download if rbd is used for glance, but compute is using local ephemeral storage, to allow nova-compute to direct download the images in this scenario from the glance ceph pool via rbd, instead going through glance api. If NovaGlanceEnableRbdDownload is set, per default the global RBD glance parameters are used, CephClientUserName GlanceRbdPoolName and CephClusterName for the used ceph.conf. Glance supports multi storage backends which can be configured using GlanceMultistoreConfig. If additional RBD glance backends are configured, the NovaGlanceRbdDownloadMultistoreID can be used to pointing to the hash key (backend ID) of GlanceMultistoreConfig to use. If CephClientUserName or GlanceRbdPoolName are not set in the GlanceMultistoreConfig, the global values of those parameters will be used.