Hi Gianluca, I really don't think it should. I've re-created that scenario - I didn't go as far as to stop the engine, but stopped *all* of the ovn stuff running on it - and despite that, the flows on the host were unaffected, and traffic kept flowing. Could you provide the output of 'ovs-ofctl dump-flows br-int' *before* and *after* engine is shutdown ? Also outputs to 'ovs-vsctl show' and 'ovs-ofctl show br-int' . Also before and after engine-shutdown. All of the above on the host where the VMs are running. Another question; is the OVN network you created an overlay, or is it attached to a physical network? Regards, Miguel On Tue, Sep 4, 2018 at 3:15 PM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
Hello, I have VM1 and VM2 with their vnics on OVN. They are running on the same host. Suppose this host (and so its OVN Controller) looses connectivity with the OVN Provider (that in my case runs on oVirt engine, that is an external server). Is it correct/expected that VM1 looses connectivity with VM2 until fixed?
So, in other words, is the OVN Provider a sort of single point of failure (eg if I restart enigine in my case)?
Thanks, Gianluca
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