xn0 systat no egress data?

[Pete Wright]

On 11/1/16 6:02 AM, Bradley T. Hughes wrote:
>
>> On 31 Oct 2016, at 21:44, Pete Wright <pete at nomadlogic.org> wrote:
>>
>> hey all - this is regarding the following bug i've opened:
>>
>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213814
>>
>> tl;dr version is that on 11.0-RELEASE on EC2 when i invoke "systat -ifstat" the egress data flows for the xn0 device do not update. verified it works as expected on 10.3-RELEASE.  tried reading through code but am pretty confused as to how xn0 is created and what code is used to update the sysctl MIBs.
>
> FWIW, I see the same with the ixv0 device on a c4.large AWS EC2 instance. I also commented on the PR in bugzilla with additional info.
>

Thanks Bradley - I've also observed this behaviour on the ixv0 
interfaces as well.  I believe the patch is on the right track - i.e. I 
suspect the issue lies in the backend Xen device code.  Hoping it's a 
trivial fix for someone more familiar with the plumbing of that code 
than me.

Cheers!
-pete


-- 
Pete Wright
pete at nomadlogic.org
nomadlogicLA