4. Create a storage pool, the name of the storage pool is testpool
5. Upload an object to the testpool storage pool, the name of the object is testobject
6. Create an RBD image, the image name is testimage, and the size is 100M
7. Map the testimage as Block device
8. Delete the testpool storage pool
Create a storage pool named testpool
[root@node1 ceph-cluster]# ceph osd pool create testpool 128
Upload an object to the testpool storage pool, the name of the object is testobject
[root@node1 ceph-cluster]# rados put testobject test.txt -p textpool
Create an RBD image, the image name is testimage, and the size is 100M
rbd create testimage --image fature layering --size 100M
Map testimage as a block device
rbd map testpool/testimages --name client.admin
Delete the testpool storage pool
ceph osd pool delete testpool testpool --yes-i-really-really-mean-it