本文主要是介绍ceph 1 pool(s) have non-power-of-two pg_num，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
执行ceph –s 发现集群状态并非ok，具体信息如下：
[ceph-admin@ceph-node1 cluster]$ ceph -w
cluster:
id: a2e7e83b-8319-4d28-957f-27c8d7b62fa8
health: HEALTH_WARN
1 pool(s) have non-power-of-two pg_num
由于是新配置的集群，只有一个pool
$ sudo ceph osd lspools
1 rbd
查看rbd pool的PGS
$ sudo ceph osd pool get rbd pg_num
pg_num: 64
*pgs为64，因为是2副本的配置，所以当有8个osd的时候，每个osd上均分了64/8 2=16个pgs,也就是出现了如上的错误 小于最小配置30个
解决办法：修改默认pool rbd的pgs
$ sudo ceph osd pool set rbd pg_num 128
set pool 0 pg_num to 128
$ sudo ceph -s
cluster 257faba1-f259-4164-a0f9-1726bd70b05a
health HEALTH_WARN
64 pgs stuck inactive
64 pgs stuck unclean
pool rbd pg_num 128 > pgp_num 64
monmap e1: 1 mons at {bdc217=192.168.13.217:6789/0}
election epoch 2, quorum 0 bdc217
osdmap e52: 8 osds: 8 up, 8 in
flags sortbitwise
pgmap v121: 128 pgs, 1 pools, 0 bytes data, 0 objects
715 MB used, 27550 GB / 29025 GB avail
64 active+clean
64 creating
发现需要把pgp_num也一并修改，默认两个pg_num和pgp_num一样大小均为64，此处也将两个的值都设为128
$ sudo ceph osd pool set rbd pgp_num 128
set pool 0 pgp_num to 128
最后查看集群状态，显示为OK，错误解决：
[ceph-admin@ceph-node1 cluster]$ ceph -s
cluster:
id: a2e7e83b-8319-4d28-957f-27c8d7b62fa8
health: HEALTH_OK
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