11.1 running on HyperV hn interface hangs

[Paul Koch]

On Wed, 6 Sep 2017 12:02:43 +0100
Pete French <petefrench at ingresso.co.uk> 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: <Hyper-V Network Interface> 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.