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/