ironic/releasenotes/notes/better-handle-skip-upgrade-3b6f06ac24937aa4.yaml
Mathieu Gagné 692f289a32 Detect skip version upgrades from version earlier than Pike
When performing a skip version upgrade from a release earlier than Pike,
Ironic will crash when check_versions cannot find the 'version' columns
in the database.

This change adds a safety check which detects old database
version missing the 'version' columns. Instead of crashing, it will
inform the user that skip version upgrades are not supported and
that database migrations need to be run for each skipped versions instead.

Story: 2002558
Task: 22122
Change-Id: Ifa100c6fd168fc59b56bba0c41836958b10f2d47
2018-07-06 12:46:14 -04:00

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YAML

---
fixes:
- |
Better handles the case when an operator attempts to perform an upgrade
from a release older than Pike, directly to a release newer than Pike,
skipping one or more releases in between (i.e. a "skip version upgrade").
Instead of crashing, the operator will be informed that
upgrading from a version older than the previous release is not supported
(skip version upgrades) and that (as of Pike) all database migrations need
to be performed using the previous releases for a fast-forward upgrade.
[Bug `2002558 <https://storyboard.openstack.org/#!/story/2002558>`_]