[ovs-discuss] OVS 2.10 geneve errors

[Gregory Rose]

On 8/21/2018 11:39 AM, Gregory Rose wrote:
> On 8/21/2018 11:27 AM, Ben Pfaff wrote:
>> On Tue, Aug 21, 2018 at 11:15:31AM -0700, Gregory Rose wrote:
>>> On 8/21/2018 7:38 AM, William Tu wrote:
>>>> On Mon, Aug 20, 2018 at 9:30 PM Manoj Sharma 
>>>> <manoj.sharma at nutanix.com> wrote:
>>>>> It may be because of duplicate chassis IPs (same IP address used 
>>>>> for more than one chassis).
>>>>>
>>>> Is this the case? I saw Guru is using different remote_ip
>>>>
>>>> --William
>>> I'm looking into it today.
>> My guess is that it's not a kernel issue, because userspace is
>> responsible for taking a single datapath Geneve port and breaking it up
>> among various OpenFlow tunnel ports.  (But that's no reason you
>> shouldn't look at it.)
>
It's failing here in the kernel datapath compat geneve module in the 
geneve_configure() function:

         t = geneve_find_dev(gn, dst_port, remote, geneve->vni,
                             &tun_on_same_port, &tun_collect_md);
         if (t)
                 return -EBUSY;

After the initial geneve port creation all further attempts to create a 
second geneve port are failing.
I'm tracking down why.

Thanks,

- Greg

> Thanks for the pointer!
>
> - Greg