[pve-devel] [PATCH] openvswitch hybrid network model implementation

Dietmar Maurer dietmar at proxmox.com
Wed Apr 23 10:16:56 CEST 2014

> So maybe performance impact is bigger than have a lot of rules.

maybe. but we should benchmark that.
> >>1.) I does not work 100% out of the box (needs veth hack). Difficult to explain
> to users.
> yes indeed
> >>2.) iptables chains grows if we have many VM (clumsy)
> I'm not I'll be different, because you need to parse all tap chains to find the good
> one.
> in 1 direction only, but it need to done twice, for each bridge

I don’t really understand above sentence, sorry. But if we use an extra bridge for each tab
we do not have to search for the right device?

> >>3.) does not work with OVS
> well, for ovs + tapbridge, it's working fine now ;)

Sure. But I asume it would simplify things if we use exactly the same setup.

> >>Also note that we do not need to enable netfilter on vmbr0 with this setup. so
> we can
> >>completely exclude VMs from using the firewall (such VM won't notice a
> performance
> >>penalty).
> do you wan to plug vm without firewall directly on vmbr0 ?


> Or is it possible to disable netfilter on a specific fwbrXXXiY ?


> But, we have also ovs now, so maybe users could choose ovs, if they want more
> performance.

I still prefer linux bridge code ;-)

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