On Tue, Apr 16, 2013 at 07:33:28PM +0530, Abhinandan Prateek wrote: > > I have some queries regarding Database Creator: > > Can this feature be tested on 4.1 ? > > Could someone also provide more details on the following: > > 1. Outline the exact steps that are involved in rolling upgrade procedure? > 2. Can you confirm if rolling upgrades are specific to only upgrade > procedure involving multiple management servers in a cluster? > 3. Would rolling upgrades mean that there will be zero downtime for > customers when upgrading? Are we also dealing with NOT having to restart all > system Vms ? Currently restarting system Vms is part of our upgrade > procedure. > Rohit has written most of the design goals and implementation in the wiki: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Database+Creator
The term 'rolling upgrade' might be loaded here. I don't see anything in the spec/code that guarantees that no downtime is reqd. It only alters the way upgrades are done - sticking to a base schema at 4.0 and doing incremental upgrades from there. -- Prasanna.,
