[openstack-dev] [Solum] Working group on language packs
robertc at robertcollins.net
Sat Nov 23 23:46:36 UTC 2013
Ok, so no - diskimage-builder builds regular OpenStack full disk disk images.
Translating that to a filesystem is easy; doing a diff against another
filesystem version is also doable, and if the container service for
Nova understands such partial container contents you could certainly
glue it all in together, but we don't have any specific glue for that
I think docker is great, and if the goal of solum is to deploy via
docker, I'd suggest using docker - no need to make diskimage-builder
into a docker clone.
OTOH if you're deploying via heat, I think Diskimage-builder is
targeted directly at your needs : we wrote it for deploying OpenStack
On 24 November 2013 12:24, Adrian Otto <adrian.otto at rackspace.com> wrote:
> On Nov 23, 2013, at 2:39 PM, Robert Collins <robertc at robertcollins.net>
>> On 24 November 2013 05:42, Clayton Coleman <ccoleman at redhat.com> wrote:
>>>> Containers will work fine in diskimage-builder. One only needs to hack
>>>> in the ability to save in the container image format rather than qcow2.
>>> That's good to know. Will diskimage-builder be able to break those down into multiple layers?
>> What do you mean?
> Docker images can be layered. You can have a base image on the bottom, and then an arbitrary number of deltas on top of that. It essentially works like incremental backups do. You can think of it as each "layer" has a parent image, and if they all collapse together, you get the current state. Keeping track of past layers gives you the potential for rolling back to a particular restore point, or only distributing incremental changes when you know that the previous layer is already on the host.
>> Robert Collins <rbtcollins at hp.com>
>> Distinguished Technologist
>> HP Converged Cloud
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Robert Collins <rbtcollins at hp.com>
HP Converged Cloud
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