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Re: [libvirt] [Qemu-devel] [qemu-devel] Default machine type setting for ppc64



On 2013年05月22日 04:01, Anthony Liguori wrote:
"Daniel P. Berrange" <berrange redhat com> writes:

On Tue, May 21, 2013 at 11:12:26AM -0600, Eric Blake wrote:
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.
I don't think the idea of a template belongs in libvirt.
This is fine.  But the conversation started with a statement that it's
QEMU's job to define reasonable defaults and libvirt just exposes
those.

But in QEMU, we punt this problem by letting a user globally override
this default.  libvirt hides this ability from the end user.

So either it's libvirt's problem to solve, or you should expose the
ability to set the global setting within QEMU.  We can't just point our
fingers at each other and hope the problem goes away :-)

Hi Anthony,

Currently, to resolve this problem, can we set 'pseries' as default?
Because mac99 doesn't work at all on our platform.

Thanks. :)
-- Li


Regards,

Anthony Liguori

Creating basic
XML structure with relevant defaults pre-filled for a particular usecase
is something that the libvirt-designer library is aiming to take care of
for applications.

Daniel
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