[ovs-dev] ib0 as a port on a bridge?

[christopher barry]

On Tue, 2012-09-18 at 23:49 -0400, christopher barry wrote:
> if this is not the best list for user questions, please send me to
> wherever the best place is for that.
> 
> I'm building an opennebula cloud, and I have openvswitch master running
> on squeeze kvm host nodes with 3.5.4 as bridge br0 with a single port
> (eth0 at the moment). Each host node also has a Mellanox QDR HCA for
> storage connectivity. I've configured an ipoib interface (ib0) as well
> on each node. eth0 and ib0 are on separate subnets.
> 
> Thinking it would be faster to use ib0 as the bridge port, rather than
> eth0, I reconfigured all the bridges in /etc/network/interfaces to use
> ib0, removing eth0 as a port in the file, and bounced the cluster.
> 
> couple of things happened:
> * ib0 did get added as a port, but eth0 remained unexpectedly (I had to
> del-port it) (that may be by design though, dunno)
> * I could not pass traffic through br0 when ib0 was a port.
> * I could ping the bridge with ib0 from it's owning host, but not from
> outside. (assuming it's just br0 answering, and ib0 is non-functional)
> 
> I'm confused about what is happening. By itself, the ib0 is functioning
> fine, and the bridge works fine with eth0. Is it because ib0 is not a
> real ethernet nic, per se, that I can't make this work? Was it dumb to
> even try it? Or, am I just missing something obvious?
> 
> Thanks for any insight,
> -C
> 

No takers?

-C