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Sense available hypervisors (was: Re: [Libvir] RFC: Broadcast our presence with avahi)

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.


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