Excerpts from Florian Rommel's message of 2016-03-11 04:06:39 -0800:
> Hi, I am involved in a project where there is a need to migrate instances 
> from an older Openstack release (Juno) to Liberty. However the trick is that 
> all the instances should be moved into Ceph as a backend.
> 
> So far, the only thing i have figured out to do is create all the networks 
> etc manually.
> then create a snapshot of each instance in the old environment, do a glance 
> image download, import it into the new environment, spawn a new instance and 
> then alter the database to reflect the image used to create, the actual OS 
> image and delete the imported snapshot.
> 

Why would you alter the database? There's nothing really wrong with
having a bunch of instances running from unique images.

> Is there ANYTHING that could be done smoother?we are talking a lot of image 
> exports and moving..
> :(

Were I in your position. I'd spin up new instances on the new cloud, and
then rsync the data to the new instances. Is there something preventing
you from doing it that way?

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