In this chapter, you learned:
The rbd command manages RADOS block device pools, images, snapshots, and clones.
The rbd map command uses the krbd kernel module to map RBD images to Linux block devices.
Configuring the rbdmap service can map these images persistently.
RBD has an export and import mechanism for maintaining copies of RBD images that are fully functional and accessible.
The rbd export-diff and the rbd import-diff commands export and import RBD image changes made between two points in time.
Click CREATE to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
If you DELETE your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.