Management Cluster Ceph¶

Remplacement à froid d'un tier cache:¶

upstream doc: http://docs.ceph.com/docs/master/rados/operations/cache-tiering/

ceph osd tier cache-mode ec8p2c forward
rados -p ec8p2c cache-flush-evict-all
ceph osd tier remove-overlay ec8p2
ceph osd tier remove ec8p2 ec8p2c

rados rmpool ec8p2c ec8p2c  --yes-i-really-really-mean-ita
ceph osd pool create ec8p2c 128 128 replicated

ceph osd tier add ec8p2 ec8p2c
ceph osd tier cache-mode ec8p2c writeback
ceph osd tier set-overlay ec8p2 ec8p2c

ceph osd pool set ec8p2c size 3
ceph osd pool set ec8p2c min_size 2
ceph osd pool set ec8p2c hit_set_type bloom

ceph osd pool set ec8p2c hit_set_count 1
ceph osd pool set ec8p2c hit_set_period 3600
ceph osd pool set ec8p2c target_max_bytes 200000000000
ceph osd pool set ec8p2c target_max_objects 10000000
ceph osd pool set ec8p2c cache_target_dirty_ratio 0.4
ceph osd pool set ec8p2c cache_target_full_ratio 0.8