Sure, I'll make a patch for migrate soon.
** Changed in: nova
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/1200265
Title:
Monkey-patch SQLAlchemy-Migrate to fix unique constraints bugs in
SQLite
Status in OpenStack Compute (Nova):
Invalid
Bug description:
Nova and other projects use SQLAlchemy-Migrate for DB schema
migrations. Unfortunately, this project looks like to be dead, but
have some important bugs which makes lives of OpenStack developers
harder (e. g. creation of a new unique constraint in SQLite leads to
deletion of all existing unique constraints).
A monkey-patching util has been recently merged to Oslo
(https://review.openstack.org/#/c/31016/). If it's used in Nova, it will allow
us to:
1) use the unified drop_unique_constraint() function for SQLite backend
2) fix a bug in SQLAlchemy-Migrate that leads to deletion of existing unique
constraints of a table when a new one is added (SQLite backend)
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