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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