How do Tanzu Kubemetes clusters communicate with Storage Policy Based Management to request PersistentVolumes?

The Cloud Native Storage for vSphere with Tanzu workflow is as follows:

1. A developer deploys a pod using the kubectl CLI.

2. The vSphere with Tanzu Cloud Native Storage-Container Storage Interface (CNS-CSI) reads this request from the control plane API server.

3. CNS-CSI informs the vCenter Server CNS of the need for a disk with storage class Gold.

4. CNS interfaces with SPBM for a suitable datastore that satisfies the Gold storage class (storage policy).

5. SPBM decides on a suitable datastore and interfaces with DRS for a suitable ESXi host.

6. Hostd on the ESXi host creates a First Class Disk (VMDK) on the datastore.

7. Spherelet on the ESXi host takes the created VMDK.

8. Spherelet mounts the VMDK to the vSphere Pod.

9. Spherelet reports the mount as a successful event to the control plane API server.