4 - ceph osd set-require-min-compat-client jewel
5 - ceph osd crush set-all-straw-buckets-to-straw2
6 - ceph osd crush weight-set create-compat
7 - ceph osd crush weight-set reweight-compat osd.0 .9
8 - ceph osd crush weight-set reweight-compat osd.1 1.2