+++ This bug was initially created as a clone of Bug #1624899 +++ We're missing the code to run online data migrations of Nova, Cinder, and Ironic, after the services got containerized. This pops up as a problem during consecutive upgrades, e.g. when upgrading 11->12->13, the Ironic DB sync will refuse to run 12->13 schema change because the online migrations have not been run on OSP 12 yet.
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/RHBA-2018:3789