将创建的volume1映射成块设备
[root@mysql-server ceph]# rbd map rbd_pool/volume1
rbd: sysfs write failed
RBD image feature set mismatch. You can disable features unsupported by the kernel with "rbd feature disable rbd_pool/volume1 object-map fast-diff deep-flatten".
因为rbd镜像的一些特性,OS kernel并不支持,所以映射报错,根据上面的报错提示执行这一条命令
[root@mysql-server ceph]# rbd feature disable rbd_pool/volume1 object-map fast-diff deep-flatten
继续将创建的volume1映射成块设备
[root@mysql-server ceph]# rbd map rbd_pool/volume1
/dev/rbd0 这个就是映射成功的块设备,可以自由分区格式化了