The following is the reply from rdo-list. My message is in red, the reply is in green. I have a fresh installation of OpenStack version Mitaka, but upgrading is not working. 

On Tue, Jul 12, 2016 at 12:23 AM, Gerard Braad <me@gbraad.nl> wrote:
Hi,


On Tue, Jul 12, 2016 at 4:47 AM, Guanwen Zhang <guanwen@ualberta.ca> wrote:
At first, I migrated the database from Juno to Kilo, and then from Kilo to Liberty, and then finally tried to 
migrate from Liberty to Mitaka, but failed.

Interesting. You're performing upgrade scenarios.
 
I am wondering if it is possible to have a new rdo-release for Mitaka to include these bug fixes, otherwise, the existing production Keystone database couldn't 
be migrated without great pain.

To my knowledge the upgrade path is exactly a testing scenario that is not considered in the gates (and manual steps?) before promoting to stable.

regards,


Gerard
 
--

   Gerard Braad | http://gbraad.nl
   [ Doing Open Source Matters ]



--
Henry Zhang
Sr. Sys. admin and Storage Specialist