launchpad-dev team mailing list archive

[Tom Haddon <tom.haddon@xxxxxxxxxxxxx>]

On Tue, 2010-09-14 at 08:46 -0400, Curtis Hovey wrote:
> On Tue, 2010-09-14 at 11:41 +0100, Tom Haddon wrote:
> > Might be more reliable but less accurate :) We estimate the downtime
> > based on how long the last update took on staging, and then
> > multiplying
> > by a factor that seems to have accurately reflected the difference in
> > time between staging and production (with a little padding). We could
> > only commit to 90 mins if we refused to rollout any DB updates that
> > took
> > longer than a certain period of time on staging. 
> 
> Staging restore times trend up, so we are always talking about
> increasing time for a rollout. We will continue to do schema development
> after the featureflag is complete. What we cannot see is the staging
> restore time verses the real time--maybe that is pointless because there
> are other rollout incidents that increased the rollout.

We do keep logs of each step of the rollout which we could give you
access to:

https://pastebin.canonical.com/37152/

If you're interested in these, please file an RT asking for these to be
synced to somewhere on devpad.

Thanks, Tom