nova/releasenotes/notes/rm_db2-926e38cbda44a55f.yaml
Sean Dague cdf74c57a6 remove db2 support from tree
This removes db2 support from tree completely. This is an oddball non
open database that made doing live data migrations difficult. It is
used by 0% of users in the OpenStack User Survey.

Supporting commercial software that doesn't have users at the cost of
delivering features and fixes to our community is the wrong
tradeoff. This corrects that.

It rewrites migrations, which we typically don't ever do, but it is
better if newton fresh environments fail early in db creation instead
of very deep in the data migration process.

Change-Id: Ifeb9929e4515e3483eb65d371126afd7672b92a4
2016-05-23 07:33:20 -04:00

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---
upgrade:
- DB2 database support was removed from tree. This is a non open
source database that had no 3rd party CI, and a set of constraints
that meant we had to keep special casing it in code. It also made
the online data migrations needed for cells v2 and placement
engine much more difficult. With 0% of OpenStack survey users
reporting usage we decided it was time to remove this to focus on
features needed by the larger community.