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Re: [Libvir] Virtual networking

On Thu, 2007-01-25 at 16:02 +0000, Daniel P. Berrange wrote:

> That's an interesting idea - your description..
>   "a virConnectPtr is a connection to a specific hypervisor 
>    *and* the virtual network supervisor"
> ..makes me thing of a slightly alternative impl. We currently have
> a single internal driver API  'virDriverPtr' which is just a list of
> function pointers for all the HV related calls. Rather than making that
> struct bigger to add in networking calls, how about we define two separate
> internal driver APIs
>    virHypervisorDriver
>    virNetworkDriver
> It strikes me that most of the different hypervisor backends will simply
> want to re-use the same network driver backend, so why not properly
> de-couple them. The virConnectOpen  function would thus first lookup
> a hypervisor driver, and then lookup a networking driver. This avoids
> the somewhat nasty issue of having to figure out how to activate 
> multiple non-conficting drivers to get the correct combo of HV & network 
> stuff. 

	Yep, that'd be the best way to do it.

> The only small complication would be ensuring that the HV driver and
> network driver didn't need to open 2 separate TCP connections to the
> same place, but I'm sure we'd be able to figure that out.


	(Also, if we go with this approach, we should probably also do
s/qemud/libvirtd/ or something ... but we need to figure out what to do
wrt. the "other libvirtd" first :-)


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