[openstack-dev] [nova]Why not allow to create a vm directly with two VIF in the same network

Chris Friesen chris.friesen at windriver.com
Fri Jan 24 15:40:57 UTC 2014

On 01/24/2014 08:33 AM, CARVER, PAUL wrote:
> I agree that I’d like to see a set of use cases for this. This is the
> second time in as many days that I’ve heard about a desire to have such
> a thing but I still don’t think I understand any use cases adequately.
> In the physical world it makes perfect sense, LACP, MLT,
> Etherchannel/Portchannel, etc. In the virtual world I need to see a
> detailed description of one or more use cases.
> Shihanzhang, why don’t you start up an Etherpad or something and start
> putting together a list of one or more practical use cases in which the
> same VM would benefit from multiple virtual connections to the same
> network. If it really makes sense we ought to be able to clearly
> describe it.

One obvious case is if we ever support SR-IOV NIC passthrough.  Since 
that is essentially real hardware, all the "physical world" reasons 
still apply.


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