On Fri, Sep 13, 2013 at 7:51 AM, Dolph Mathews <dolph.math...@gmail.com> wrote:
> ++ Data backups are a solved problem, and no DB admin should trust an > application to perform its own backups. I'm not completely sure I agree. Consider the case where a cloud with active users undertakes an upgrade. The migrations run, and they allow user traffic to hit the installation. They then discover there is a serious problem and now need to rollback. However, they can't just restore a database backup, because the database is no longer in a consistent state compared with the hypervisors -- users might have created or deleted instances for example. In this scenario if we could downgrade reliably, they could force a downgrade with db sync, and then revert the packages they had installed to the previous version. How would they handle this scenario with just database backups? Michael -- Rackspace Australia _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
