openstack/glance-specs
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Update spec template for db migrations

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Modify the "Data model impact" section of the spec template to
so that the impact of a change on zero-downtime database migrations
will be addressed.

Change-Id: I1ad5ad4ff333aef66ce80b442d8290982160c1c8
Depends-On: Ic8b21d2cc1e42f3e1478973df0f80792e5098f90
Partially-Implements: blueprint rolling-upgrades
This commit is contained in:
Brian Rosmaita 2017-03-21 09:48:12 -04:00
parent 3c6f8c5ddb
commit 49843c995d
1 changed files with 12 additions and 1 deletions
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13
specs/template.rst
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@ -91,7 +91,18 @@ Questions which need to be addressed by this section include:
* What new data objects and/or database schema changes is this going to
require?
* What database migrations will accompany this change?
* Glance is committed to zero-downtime database migrations and has adopted an
`E-M-C migration strategy <https://docs.openstack.org/developer/glance/database_migrations.html>`_
to achieve this. Address the following in sufficient detail to make it clear
that the intended database change will be achieved.
- Will this change require database triggers? If yes, describe them.
- Explain what your expand migrations will look like.
- Explain what your data migrations will look like.
- Explain what your contract migrations will look like.
- Finally, do these changes have the potential to interfere with the
database migrations for other specs that have been approved for this
cycle?
* How will the initial set of new data objects be generated? For example if you
need to take into account existing images, or modify other existing data,