5 - (CACHE_POOL_NO_HIT_SET)
9 - sudo ceph osd erasure-code-profile set teuthologyprofile crush-failure-domain=osd m=1 k=2
10 - sudo ceph osd pool delete rbd rbd --yes-i-really-really-mean-it
11 - sudo ceph osd pool create rbd 4 4 erasure teuthologyprofile
12 - sudo ceph osd pool create cache 4
13 - sudo ceph osd tier add rbd cache
14 - sudo ceph osd tier cache-mode cache writeback
15 - sudo ceph osd tier set-overlay rbd cache
16 - sudo ceph osd pool set cache hit_set_type bloom
17 - sudo ceph osd pool set cache hit_set_count 8
18 - sudo ceph osd pool set cache hit_set_period 60
19 - sudo ceph osd pool set cache target_max_objects 250