Description of problem:
Running RHOSP9 , multi-backend ceph, eqlx, compellent:
On clusters using multi-backend storage, Ceph should be the default volume storage as it was in OSP8. In OSP9, EQXL is the default volume backend.
If you do a “cinder create myvolume”, it automatically creates an eqlx volume. In OSP8, Ceph was the default.
There is a param in cinder.conf that specifies a default volume type, but it is commented out.
Default volume type to use (string value)
#default_volume_type = <None>

If there is a way to specify this in the yaml heat templates, please let us know

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