On 05/21/2013 10:42 AM, Anthony Liguori wrote:
Perhaps the right thing to do for OpenStack is to allow for a user
specified configuration file to select things like the default hardware
models/machine types? Then this could become node configuration instead
of dynamic configuration.
I think it could be useful for general users too. Every domain requires
a lot of the same boiler plate bits. I think a lot of configurations
would benefit from being able to set global domain options.
I have also argued in the past that it would be useful for libvirt to
support the idea of a template, where you can specify a domain XML that
inherits defaults from the template. We've already done things like
this for networking, nwfilter, and even secret management (in domain
XML, you declare that you are using a named network object, and that
network object serves as the template instead of you having to hard-code
all the elements into your domain XML), so we have a design to base it
on. But until someone adds such a feature for libvirt, then OpenStack
should be passing explicit XML to libvirt, and tracking defaults at the
OpenStack layer.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library
http://libvirt.org