I verified following scenarios without setting the region on 4.7.0-0.nightly-2021-05-17-040457, and do some storage basic test and passed. * OpenStack where nodes and storage both have a single availability zone (AZ) (typically "nova"). * OpenStack where nodes have multi AZ, but name of the AZ for nodes ("AZ-1/AZ-2/AZ-3") is different that name of the AZ for storage (say "nova"). We don't have the env that nodes and storage both have multi AZ and have the same name.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.7.12 bug fix and security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2021:1561