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Date:      Tue, 1 Nov 2016 02:27:35 +0000
From:      Colin Percival <cperciva@tarsnap.com>
To:        Pete Wright <pete@nomadlogic.org>, freebsd-cloud@freebsd.org, freebsd-xen@freebsd.org
Subject:   Re: xn0 systat no egress data?
Message-ID:  <010001581db696d1-e8172b98-d878-4f1e-9ac3-cd80b627ffbc-000000@email.amazonses.com>
In-Reply-To: <fcae5385-3b44-5f48-0552-aa3cd9d84947@nomadlogic.org>
References:  <8be5174c-fcd5-0e5b-921f-5cfc31e99c4f@nomadlogic.org> <010001581c9246a1-331188e9-2263-4600-abb3-09efc7ea3026-000000@email.amazonses.com> <fcae5385-3b44-5f48-0552-aa3cd9d84947@nomadlogic.org>

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On 10/31/16 14:57, Pete Wright wrote:
> On 10/31/16 2:08 PM, Colin Percival wrote:
>> On 10/31/16 13:44, Pete Wright 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.
>>
>> I think this might be fixed by r308126.  Can you try applying that patch and
>> report back?
> 
> hrm doesn't look like it has changed anything on my end.
> 
> i applied this patch against the 11.0.1 svn source:
> https://svnweb.freebsd.org/base/head/sys/dev/xen/netfront/netfront.c?view=patch&r1=308126&r2=308125&pathrev=308126
> 
> then built/installed a kernel after applying this patch with no change. I
> don't think i need to rebuild world for this, right?

Hmm, that should have worked.  (Assuming you rebooted into the new kernel,
of course.)

I'm out of ideas... maybe someone on the -xen list will know more...

-- 
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid



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