I've created a blueprint for a RADOS level mechanism for discovering cold objects. http://wiki.ceph.com/01Planning/02Blueprints/Dumpling/RADOS_Object_Temperature_Monitoring Such a mechanism will be crucial to future tiering implementations. If you are interested in discussing this at CDS, please add yourself as an interested party to the blueprint! -Sam -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html