Le 18/03/2016 09:48, Dulko, Michal a écrit :
On Fri, 2016-03-18 at 08:27 +0000, Tan, Lin wrote:
Hi,
I noticed that expand/migrate/contract was revert in
https://review.openstack.org/#/c/239922/
There is a new CMD 'online_data_migrations' was introduced to Nova and some
data-migration scripts have been added.
So I wonder will Nova keep expand the DB schema at beginning of live upgrade
like before Or Nova have some new ways to handle DB Schema change?
The upgrade doc was not update for a long time....
http://docs.openstack.org/developer/nova/upgrade.html
Thanks a lot.
Best Regards,
Tan
[1] will help you understand current way of doing live schema upgrades.
[1]
http://www.danplanet.com/blog/2015/10/07/upgrades-in-nova-database-migrations/
To be clear, that's mentioned in the (in progress) release notes for
Mitaka
http://docs.openstack.org/releasenotes/nova/unreleased.html#new-features
"Added a nova-manage db online_data_migrations command for forcing
online data migrations, which will run all registered migrations for the
release, instead of there being a separate command for each logical data
migration. Operators need to make sure all data is migrated before
upgrading to the next release, and the new command provides a unified
interface for doing it."
HTH,
-Sylvain
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