iSCSI is a technology that allows you to export block devices over IP networking. As 10 G networking has been more widely adopted, iSCSI has become extremely popular and is now the dominant technology in the block storage scene.
The device that's exporting the block storage is called the iSCSI target and the client is called the iSCSI initiator, both of which are identified by an IQN name.
At the time of writing, the iSCSI support in Ceph only works with Red Hat-derived distributions. Although the underlying components should all work across any Linux distribution, the glue that holds them together still requires a number of updates to improve compatibility. Therefore, this example will require a VM running ...