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On Sat, Aug 22, 2015 at 5:08 AM, shihanzhang <ayshihanzhang at 126.com> wrote:

> hi Vikas Choudhary, when ovs-agent service recover(ovs-agent process
> restart), the dhcp port will not re-binding successfully?
>
>
>
>
>
> At 2015-08-22 14:26:08, "Vikas Choudhary" <choudharyvikas16 at gmail.com>
> wrote:
>
> Hi Everybody,
>
> I want to discuss on https://bugs.launchpad.net/neutron/+bug/1348589.This
> is there for more than a year and no discussion i could find on this.
>
> *Scenario:*
> ovs-agent is down and then a network and subnet under this newly created
> network are created using cli. No error visible to user, but following
> irregularities are found.
>
> *Discrepancies:*
> 1. neutron port-show <dhcp-port> shows:
>      binding:vif_type      | binding_failed
> 2. Running "ovs-ofctl dump-flows br-tun", no of-flow got added
> 3. Running "ovs-vsctl show br-int", no tag for dhcp-port.
>
> neutron db will have all the attributes required to retry vif binding.My
> query is when should we trigger this rebinding.Two approaches i could think
> of are:
> 1> At neutron server restart, for all ports with vif_type as
>  "binding_failed" plugins/ml2/drivers/mech_agent.bind_port can be invoked
> as a sync up activity.
>
>
Or when you start the OVS agent again. Check out this patch:
https://review.openstack.org/#/c/162260/.


>
> 2> In neutron port update api,
> http://developer.openstack.org/api-ref-networking-v2-ext.html , could be
> enhanced to receive vif binding related options also and then
> eventually plugins/ml2/drivers/mech_agent.bind_port can be
> invoked.Corresponding changes will be made to 'port update cli' also.
>
> Please suggest.
>
>
>
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