Re: Sense available hypervisors (was: Re: [Libvir] RFC: Broadcast our presence with avahi)
On Fri, Sep 14, 2007 at 08:25:07AM +0100, Richard W.M. Jones wrote:
Daniel P. Berrange wrote:
> - I advertise two subtypes, of '_xen.libvirtd._tcp' and
> '_qemu.libvirtd._tcp'
> What I actually want todo is to be able to probe the libvirt local
> drivers
> to auto-discover what virtualization platforms are available. A sort of
> lightweight virConnectOpen which merely returns TRUE/FALSE and doesn't
> actually allocate a virConnectPtr object. Need to extend the internal
> driver API for this.
I wanted this feature too, however I don't think the way that you're
proposing is right.
Just as virConnectGetCapabilities returns the capabilities of the
current hypervisor, I think there should be a call like 'virGetInfo' (or
something like that) which returns the capabilities of the node, which
would include what hypervisors are supported.
That would solve the issue of having to have the mdns code hard code the
list of URIs / drivers to probe for. Perhaps virNodeGetCapabilities(). Not
sure what other info we'd want to return besides just a list of usable
connection URIs, or available drivers.
Dan.
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