ceph osd erasure-code-profile set cephfs k=5 m=2 crush-failure-domain=host crush-root=hdd crush-device-class=hdd --force
ceph osd pool create cephfs.data 1024 1024 erasure cephfs
ceph osd pool create cephfs.metadata 64 64 replicated ssd
ceph osd pool create cephfs.cache 64 64 replicated ssd

ceph osd pool set cephfs.data allow_ec_overwrites true

ceph fs new cephfs cephfs.metadata cephfs.data
ceph fs ls

ceph osd tier add cephfs.data cephfs.cache
ceph osd tier cache-mode cephfs.cache writeback
ceph osd tier set-overlay cephfs.data cephfs.cache

ceph osd pool set cephfs.cache hit_set_type bloom
ceph osd pool set cephfs.cache hit_set_count 12
ceph osd pool set cephfs.cache hit_set_period 14400
ceph osd pool set cephfs.cache target_max_bytes 100000000000