下面是测试验证环节
1. 创建一个 pool
rbd create foo --size 4 --image-format 2 --image-feature layering
2. 挂载和格式化
rbd map foo
sudo mkfs.ext4 -m0 /dev/rbd0
mkdir ~/foo
mount /dev/rbd0 ~/foo 不错的文档：https://cloud.tencent.com/developer/article/1159507
“网红架构师”解决你的Ceph 运维难题-Part1
https://blog.csdn.net/aixiaoyang168/article/details/78788703 初试 Centos7 上 Ceph 存储集群搭建 https://blog.csdn.net/aixiaoyang168/article/details/78825850