集成块存储

在OpenStack上集成Ceph块存储，需要在Ceph存储节点上进行操作。

1. 更新OSD（Object Storage Device）的PG（Placement Group）状态为active+clean。

   ceph osd getcrushmap -o /etc/ceph/crushmap 
   crushtool -d /etc/ceph/crushmap -o /etc/ceph/crushmap.txt 
   sed -i 's/step chooseleaf firstn 0 type host/step chooseleaf firstn 0 type osd/' /etc/ceph/crushmap.txt 
   grep 'step chooseleaf' /etc/ceph/crushmap.txt 
   crushtool -c /etc/ceph/crushmap.txt -o /etc/ceph/crushmap-new 
   ceph osd setcrushmap -i /etc/ceph/crushmap-new

2. 在Ceph存储节点Ceph OSD使能pool。

   ceph osd pool application enable volumes rbd 
   ceph osd pool application enable vms rbd 
   ceph osd pool application enable images rbd 
   ceph osd pool application enable backups rbd

3. 在集成了Ceph存储的OpenStack节点上验证Ceph是否配置成功。

   ceph -s

   配置成功的预期结果：