thank you for your quick reply
i use tcpdump in both controller and ovs, and the result is:
1. controller can send ls_dbs method and receive reply from ovs, then send
get_schema method but no reply
2. when ovs receive get_schema from controller, it quickly react and send
the schema of Open_vSwitch, but unfortunately, the messages can't send to
controller successfully, it starts retransmission forever, following
picture!
thank you!
2016-07-07 13:03 GMT+08:00 Jason Kölker <[email protected]>:
> On Thu, Jul 7, 2016 at 1:57 AM, 谢磊 <[email protected]> wrote:
> > when i used ovsdb protocol integrated into ryu, i met a problem
> like
> > this:
> > first, i set manager for ovs like this: ovs-vsctl set-manager
> > tcp:ip:port
> > second, i write a very simple app in which a handler function
> handle
> > NewOVSDBConnection event
> > but what makes me send this email to you is that the app dose not
> > work, according to the ovsdb-server i find the problem, the ovs dose not
> > react 'get_schema' method from ryu app, i have taken a lot of time to fix
> > this problem, but failed, so, i beg your help.
> > ps. i used ovs-vsctl show can find the manager is connected
> > i'm looking forward to your reply!
>
> In the future please direct this to the ryu-devel mailing list. I have
> cc'd the list and moved the other recipients to bcc. Please make sure
> to reply to the list as well.
>
> I believe that openvswitch is probably returning an error to the
> get_schemas request. To troubleshoot, I would add some logging in the
> loop at
>
> https://github.com/osrg/ryu/blob/master/ryu/services/protocols/ovsdb/client.py#L114
> to see what the value of error or reply.error is and then figure out
> why openvswitch is sending the error.
>
> If that doesn't have an error, add some log statements before and
> after every line in the `discover_schemas` function, so you can see
> what is the last line executed before it hangs. You might also see if
> turning on debug level on openvswitch's vlog will show anything of
> note on the vswitch side.
>
> Happy Hacking!
>
> 7-11
>
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