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Just as a reminder, not only libvirt-lxc can be used as an os-like 
container provider but
also recently added libvirt-parallels driver. And regarding nested 
Docker support, we
have just implemented it thus, anyone will be able to use nested 
application Docker
containers via libvirt-parallels containers.

Maxim Nestratov

11.05.2015 17:06, Dan Smith пишет:
>> +1 Agreed nested containers are a thing. Its a great reason to keep
>> our LXC driver.
> I don't think that's a reason we should keep our LXC driver, because you
> can still run containers in containers with other things. If anything,
> using a nova vm-like container to run application-like containers inside
> them is going to beg the need to tweak more detailed things on the
> vm-like container to avoid restricting the application one, I think.
>
> IMHO, the reason to keep the seldom-used, not-that-useful LXC driver in
> nova is because it's nearly free. It is the libvirt driver with a few
> conditionals to handle different things when necessary for LXC. The
> docker driver is a whole other nova driver to maintain, with even less
> applicability to being a system container (IMHO).
>
>> I am keen we set the right expectations here. If you want to treat
>> docker containers like VMs, thats OK.
>>
>> I guess a remaining concern is the driver dropping into diss-repair
>> if most folks end up using Magnum when they want to use docker.
> I think this is likely the case and I'd like to avoid getting into this
> situation again. IMHO, this is not our target audience, it's very much
> not free to just put it into the tree because "meh, some people might
> like it instead of the libvirt-lxc driver".
>
> --Dan
>
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