As Open Virtual Network (OVN) is going to be default in OpenStack Platform 15 (replacing the existing ML2/OVS solution), it should be properly tested against the Manila service.
Completed verification for Manila Regression test for RHOS15
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, 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/RHEA-2019:2811