Can you take snapshots of flows in the kernel at different moments in time (when everything is OK and it is not) using the dpctl utility (ovs-dpctl) ?
> On Oct 14, 2016, at 12:11 PM, Valentine Sinitsyn > <valentine.sinit...@gmail.com> wrote: > > Hi everyone, > > We are observing strange OVS behavior in some of our setups. > > Sometimes, the traffic just stops flowing through veth or tap interfaces > plugged into OVS bridge. > > ovs-appctl ofproto/trace for sample packet show that OVS will output it to > the correct port, and we see real traffic in a mirror port we add to OVS. > > This persists until one re-initializes the interface with ip link set down && > ip link set up. Then the traffic flow restores. Nothing changes in OF flows > as per ovs-ofctl dump-flows, except cookie value, which I presume means OVS > re-installed the flows. The OVS database remains the same as well, except > stats. > > How can we debug this? I'm giving a high-level overview without any details > as I'm not seeking for the solution, just a way to find one. I'm okay with > OVS internals and diving into the kernel. > > Many thanks, > Valentine Sinitsyn > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
