Re: [win-pv-devel] [xs-devel] Question about testing new windows pv drivers on xenserver

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: xs-devel-request@xxxxxxxxxxxxxxxxxxx [mailto:xs-devel-
> request@xxxxxxxxxxxxxxxxxxx] On Behalf Of Fabio Fantoni
> Sent: 24 March 2016 14:29
> To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx; xs-
> devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [xs-devel] Question about testing new windows pv drivers on
> xenserver
> 
> Il 24/03/2016 13:55, Paul Durrant ha scritto:
> >> -----Original Message-----
> >> From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> >> Sent: 24 March 2016 12:49
> >> To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx; Paul Durrant
> >> Subject: Question about testing new windows pv drivers on xenserver
> >>
> >> Hi, I'm going crazy about many upgrade/remove pv drivers problems, and
> >> also other additional problem with windows 10 (big updates, ovmf pv disk
> >> only ecc...)
> >> I tried to do some fast tests with xenserver core and win pv drivers
> >> signed with installer included for see if the same problems are
> >> reproducible also with them or not.
> >> I downloaded and installed XenServer Dundee beta.3, I saw that use xen
> >> 4.6 but qemu seems still use the old traditional instead.
> >> I saw there is also the upstream one binary
> >> (/usr/lib64/xen/bin/qemu-system-i386), I did a fast google search and I
> >> setted these in /etc/xenopsd.conf:
> >> qemu-system-i386=/usr/lib64/xen/bin/qemu-system-i386
> >> use-upstream-qemu=true
> >> And rebooted toolstack (xe-toolstack-restart) but seems it still using
> >> qemu traditional instead (looking ps and initial boot screen).
> >> I also tried:
> >> chkconfig --del xenopsd-xc
> >> chkconfig --add xenopsd-xenlight
> >> following
> >> https://lists.xenserver.org/sympa/arc/xs-devel/2014-01/msg00035.html
> >> but trying to start the vm (with xe vm-start vm=...) the command
> >> "freeze" without output and I found nothing in logs.
> >>
> >> Is there anywhere an howto about using the upstream qemu with
> >> xenserver?
> > In short, I'm pretty sure you can't. However, if you ask this question on 
> > the
> xs-devel list (at xenserver.org) then someone from the toolstack team may
> be able to advise how you might do it.
> 
> Thanks for your reply.
> I supposed you are using xenserver core and upstream qemu, can you tell
> me what environment are you using please?
> 

For upstream development I don't use XenServer. My preferred environment is 
generally a debian dom0 (I have wheezy and jessie hosts at the moment) but I 
build my own kernel (generally based on net-next 'cos I'm usually hacking on 
netback) and my own Xen and I usually just stick with whatever QEMU upstream 
that brings in.

> Added xs-devel for the question above, @xs-devel: can someone tell me
> how I can use upstream qemu with xenserver core using xapi please?
> Other replies/questions below.
> 
> >
> >> I also tried to do a fast install of a windows 7 domU using xencenter
> >> and installing pv driver from guest-tools.iso  but I not understand if
> >> are the new one (>=8.1) or older, based on version I found seems older,
> >> or I'm wrong? In that case where I can find newer driver signed and
> >> including installer (if exist) for doing some fast tests?
> >>
> > The tech. preview 3 drivers are the 8.1 drivers.
> 
> I download dundee beta 3 from here:
> http://xenserver.org/overview-xenserver-open-source-
> virtualization/prerelease.html
> Is the tech preview 3 you mean is the same or a different one? if
> different where I can found it?
> Another thing I want try is windows live snapshot with vss, I saw this:
> https://github.com/xenserver/win-xenvss but in drivers installed in
> xenserver from integrated guest-tools seems not available
> 
> >
> >> My goal would be to test on xenserver with qemu upstream, new pv
> driver
> >> (at least 8.1) signed with complete installer to see whether or not
> >> there are the same problems that I have with xen and pv drivers
> >> individual not signed.
> >>
> > Why do you need upstream QEMU?
> 
> Mainly for spice (that now is full features also upstream for hvm domUs
> using xen 4.6)
> Also needed for other features, for example I do occasional testing with
> ovmf (uefi support for domUs), pv disks using it (for faster boot) but
> unfortunately I can't consider to use it in production shortly because
> on windows 10 bigger updates disables the pv drivers making domUs not
> working, I suppose do it with not signed drivers but after long time
> waiting signed xen project pv drivers are still not available (I want
> try xenserver with the full signed one instead also for retry these tests)
> 

Discussions are still ongoing with the Linux Foundation to see if they are 
willing to sign up to Microsoft's attestation agreement. This is a 
pre-requisite to signing drivers for Windows 10.

  Paul

> Thanks for any reply and sorry for my bad english.
> 
> >
> >    Paul
> >


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