Ceph指令

#建立Crush Rule

ceph osd crush rule create-replicated rule-nvme default host nvme
ceph osd crush rule create-replicated rule-hdd default host hdd
ceph osd crush rule rm replicated_rule

為HDD Pool建立SSD快取

ceph osd tier add Ceph_Pool Cache
ceph osd tier cache-mode Cache writeback
ceph osd tier set-overlay Ceph_Pool Cache
ceph osd pool set Cache hit_set_type bloom
#ceph osd pool set Cache hit_set_count 12
#ceph osd pool set Cache hit_set_period 14400

ceph osd pool set Cache target_max_bytes xxxxxx
ceph osd pool set Cache target_max_objects xxxxxx
ceph osd pool set Cache min_read_recency_for_promote 2
ceph osd pool set Cache min_write_recency_for_promote 2

ceph osd pool set Cache cache_target_dirty_ratio 0.4
ceph osd pool set Cache cache_target_dirty_high_ratio 0.6
ceph osd pool set Cache cache_target_full_ratio 0.8
ceph osd pool set Cache cache_min_flush_age 600
ceph osd pool set Cache cache_min_evict_age 1800

#remove Cache Pool

ceph osd tier cache-mode Cache readproxy
radow -p Cache ls
radow -p Cache cache-flush-evict-all
ceph osd tire remove-overlay Ceph_Pool
ceph osd tire remove Ceph_Pool Cache
ceph delete Cache Cache --yes-i-really-really-mean-it

#移除以前是Ceph LVM的Disk Lable

ceph-volume lvm zap /dev/sdX --destroy

#確認Ceph 狀態

ceph -s

ceph osd pool stats

#關閉ceph cluster準備

ceph osd set noout
ceph osd set nobackfill
ceph osd set norecover

#ceph cluster開機後執行

ceph osd unset noout
ceph osd unset nobackfill
ceph osd unset norecover