Hello, It's now 10 months after this thread: http://www.spinics.net/lists/ceph-users/msg27497.html (plus next message) and we're at the fifth iteration of Jewel and still osd_tier_promote_max_objects_sec and osd_tier_promote_max_bytes_sec are neither documented (master or jewel), nor mentioned in the changelogs and most importantly STILL default to the broken reverse settings above. Anybody coming from Hammer or even starting with Jewel and using cache tiering will be having a VERY bad experience. Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/