环境配置,三个节点,Ceph三副本
查看Ceph最小副本数
[root@node-1 ~]# ceph osd dump | grep -E " size | min_size "
pool 1 '.rgw.root' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 8 pgp_num 8 last_change 3 flags hashpspool stripe_width 0 application rgw
pool 2 'volumes' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 64 pgp_num 64 last_change 228 lfor 0/59 flags hashpspool stripe_width 0 application cinder-volume
pool 3 'compute' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 16 pgp_num 16 last_change 372 lfor 0/57 flags hashpspool stripe_width 0
pool 4 'rbd' replicated size 3 min_size 1 crush_rule 0 object_hash rjenkins pg_num 8 pgp_num 8 last_change 236 flags hashpspool stripe_width 0
pool 5 'ssdpool' replicated size 3 min_size 1 crush_rule 1 object_hash rjenkins pg_num 128 pgp_num 128 last_change 63 lfor 0/62 flags hashpspool stripe_width 0
pool