Making 3Par LUNs available as Volume types in RHELOS 16.1 on RHEL 8.2

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Presenting storage in Openstack Director seems troublesome.

I setup the whole Cinder 3Par CPG config but no idea how to make it work but for now just trying to get an exported LUN which I have available to Redhat partitioned and formatted . I have the 3PAr drivers working and I can see the host HBAs and the 3Par multipaths via fiber channel..

So in Redhat I now have a 10TB mounted storage area and I can write files to it but how do I find the backend_name or key value to set this up in openstack as a Volume_type.

Any better documentation or demos available?