Re: 11.1 running on HyperV hn interface hangs

[Sepherosa Ziehau]

Is it possible to tell me your workload?  e.g. TX heavy or RX heavy.
Enabled TSO or not.  Details like how the send syscalls are issue will
be interesting.  And your Windows version, include the patch level,
etc.

Please try the following patch:
https://people.freebsd.org/~sephe/hn_dec_txdesc.diff

Thanks,
sephe


On Wed, Sep 6, 2017 at 11:23 PM, Julian Elischer  wrote:
> On 6/9/17 7:02 pm, Pete French wrote:
>>>
>>> We recently moved our software from 11.0-p9 to 11.1-p1, but looks like
>>> there
>>> is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012 R2)
>>> where
>>> the virtual hn0 interface hangs with the following kernel messages:
>>>
>>>   hn0:  on vmbus0
>>>   hn0: Ethernet address: 00:15:5d:31:21:0f
>>>   hn0: link state changed to UP
>>>   ...
>>>   hn0: RXBUF ack retry
>>>   hn0: RXBUF ack failed
>>>   last message repeated 571 times
>>>
>>> It requires a restart of the HyperV VM.
>>>
>>> This is a customer production server (remote customer ~4000km away)
>>> running
>>> fairly critical monitoring software, so we needed to roll it back to
>>> 11.0-p9.
>>> We only have two customers running our software in HyperV, vs lots in
>>> VMware
>>> and a handful on physical hardware.
>>>
>>> 11.0-p9 has been very stable.  Has anyone seen this problem before with
>>> 11.1 ?
>>
>>
>>
>> I don't run anything on local hyper-v anymore, but I do run a ot of stuff
>> in Azure, and we havent seen anything like this. I track STABLE for things
>> though, updating after reading the commits and testing locally for a week or
>> so, so the version I am running currently is r320175, which was part of
>> 11.1-BETA2. I am going to upgrade to a more recent STABLE sometime this weke
>> or next though, will do that on a test amchine and let you now how it goes.
>>
>> I seem to recall that there were some large changes to the hn code in
>> August to add virtual function support. When does 11.1-p1 date from ?
>
> make sure you contact the FreeBSD/Microsoft guys.  Very responsive.. don't
> know if they watch -stable..
> I'll cc a couple..
>
>>
>> -pete.
>> ___
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>>
>



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Re: 11.1 running on HyperV hn interface hangs

[Mark Millard]

Paul Koch paul.koch at akips.com wrote on
Wed Sep 6 09:33:26 UTC 2017 :

> We recently moved our software from 11.0-p9 to 11.1-p1, but looks like there
> is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012 R2) where
> the virtual hn0 interface hangs with the following kernel messages:
> 
>  hn0:  on vmbus0
>  hn0: Ethernet address: 00:15:5d:31:21:0f
>  hn0: link state changed to UP
>  ...
>  hn0: RXBUF ack retry
>  hn0: RXBUF ack failed
>  last message repeated 571 times
> 
> . . .
> 
> Has anyone seen this problem before with 11.1 ?

While it is/was a personal use/experiment I have
used all the following under Windows 10 Pro's
Hyper-V with networking via hn0 Ethernet as seen
from the guest FreeBSD:

releng/11.1 (no longer around to remind me of the
 most recent -r?? but various updates )
stable/11   (various updates, -r320807 currently)
head(various updates, -r323147 currently)

I had no problems with my use. (By no means a traffic
match to your context but definitely used.)

In all cases the Virtual Switch Manager was tied to the
(builtin) "External network" that is listed as:

Intel(R) I211 Gigabit Network Connection

in the Virtual Switch Properties pop-up for
External network. The machine is not a server.

So not totally broken as far as I can tell. Something
more specific to your context would seem to also be
involved.

Hyper-V has worked nicely for assigning 14 of the machine's
16 hardware threads to FreeBSD and doing buildworld buildkernel
and poudriere based port builds. (Windows 10 Pro not being
otherwise busy.)

===
Mark Millard
markmi at dsl-only.net

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Re: 11.1 running on HyperV hn interface hangs

[Julian Elischer]

On 6/9/17 7:02 pm, Pete French wrote:
We recently moved our software from 11.0-p9 to 11.1-p1, but looks 
like there
is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012 
R2) where

the virtual hn0 interface hangs with the following kernel messages:

  hn0:  on vmbus0
  hn0: Ethernet address: 00:15:5d:31:21:0f
  hn0: link state changed to UP
  ...
  hn0: RXBUF ack retry
  hn0: RXBUF ack failed
  last message repeated 571 times

It requires a restart of the HyperV VM.

This is a customer production server (remote customer ~4000km away) 
running
fairly critical monitoring software, so we needed to roll it back 
to 11.0-p9.
We only have two customers running our software in HyperV, vs lots 
in VMware

and a handful on physical hardware.

11.0-p9 has been very stable.  Has anyone seen this problem before 
with 11.1 ?



I don't run anything on local hyper-v anymore, but I do run a ot of 
stuff in Azure, and we havent seen anything like this. I track 
STABLE for things though, updating after reading the commits and 
testing locally for a week or so, so the version I am running 
currently is r320175, which was part of 11.1-BETA2. I am going to 
upgrade to a more recent STABLE sometime this weke or next though, 
will do that on a test amchine and let you now how it goes.


I seem to recall that there were some large changes to the hn code 
in August to add virtual function support. When does 11.1-p1 date 
from ?
make sure you contact the FreeBSD/Microsoft guys.  Very responsive.. 
don't know if they watch -stable..

I'll cc a couple..



-pete.
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Re: 11.1 running on HyperV hn interface hangs

[Paul Koch]

On Wed, 6 Sep 2017 12:02:43 +0100
Pete French  wrote:

> > We recently moved our software from 11.0-p9 to 11.1-p1, but looks like
> > there is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012
> > R2) where the virtual hn0 interface hangs with the following kernel
> > messages:
> > 
> >   hn0:  on vmbus0
> >   hn0: Ethernet address: 00:15:5d:31:21:0f
> >   hn0: link state changed to UP
> >   ...
> >   hn0: RXBUF ack retry
> >   hn0: RXBUF ack failed
> >   last message repeated 571 times
> > 
> > It requires a restart of the HyperV VM.
> > 
> > This is a customer production server (remote customer ~4000km away)
> > running fairly critical monitoring software, so we needed to roll it back
> > to 11.0-p9. We only have two customers running our software in HyperV, vs
> > lots in VMware and a handful on physical hardware.
> > 
> > 11.0-p9 has been very stable.  Has anyone seen this problem before with
> > 11.1 ?  
> 
> 
> I don't run anything on local hyper-v anymore, but I do run a ot of 
> stuff in Azure, and we havent seen anything like this. I track STABLE 
> for things though, updating after reading the commits and testing 
> locally for a week or so, so the version I am running currently is 
> r320175, which was part of 11.1-BETA2. I am going to upgrade to a more 
> recent STABLE sometime this weke or next though, will do that on a test 
> amchine and let you now how it goes.
> 
> I seem to recall that there were some large changes to the hn code in 
> August to add virtual function support. When does 11.1-p1 date from ?

Looks like 2017-08-10 

Paul.
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Re: 11.1 running on HyperV hn interface hangs

[Pete French]

We recently moved our software from 11.0-p9 to 11.1-p1, but looks like there
is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012 R2) where
the virtual hn0 interface hangs with the following kernel messages:

  hn0:  on vmbus0
  hn0: Ethernet address: 00:15:5d:31:21:0f
  hn0: link state changed to UP
  ...
  hn0: RXBUF ack retry
  hn0: RXBUF ack failed
  last message repeated 571 times

It requires a restart of the HyperV VM.

This is a customer production server (remote customer ~4000km away) running
fairly critical monitoring software, so we needed to roll it back to 11.0-p9.
We only have two customers running our software in HyperV, vs lots in VMware
and a handful on physical hardware.

11.0-p9 has been very stable.  Has anyone seen this problem before with 11.1 ?



I don't run anything on local hyper-v anymore, but I do run a ot of 
stuff in Azure, and we havent seen anything like this. I track STABLE 
for things though, updating after reading the commits and testing 
locally for a week or so, so the version I am running currently is 
r320175, which was part of 11.1-BETA2. I am going to upgrade to a more 
recent STABLE sometime this weke or next though, will do that on a test 
amchine and let you now how it goes.


I seem to recall that there were some large changes to the hn code in 
August to add virtual function support. When does 11.1-p1 date from ?


-pete.
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11.1 running on HyperV hn interface hangs

[Paul Koch]

No sure if -stable is the right mailing list for this one.

We recently moved our software from 11.0-p9 to 11.1-p1, but looks like there
is a regression in 11.1-p1 running on HyperV (Windows/HyperV 2012 R2) where
the virtual hn0 interface hangs with the following kernel messages:

 hn0:  on vmbus0
 hn0: Ethernet address: 00:15:5d:31:21:0f
 hn0: link state changed to UP
 ...
 hn0: RXBUF ack retry
 hn0: RXBUF ack failed
 last message repeated 571 times

It requires a restart of the HyperV VM.

This is a customer production server (remote customer ~4000km away) running
fairly critical monitoring software, so we needed to roll it back to 11.0-p9.
We only have two customers running our software in HyperV, vs lots in VMware
and a handful on physical hardware.

11.0-p9 has been very stable.  Has anyone seen this problem before with 11.1 ?

11.1 is listed here
 
https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/supported-freebsd-virtual-machines-on-hyper-v

Paul.
-- 
Paul Koch | Founder | CEO
AKIPS Network Monitor | akips.com
Brisbane, Australia
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