[Container-tools] HyperV

[Ken Finnigan]

I would say yes, but not essential for CDK v2, as the installer will
unlikely be in a position to handle it yet.

On Thu, Nov 5, 2015 at 12:47 PM, Pete Muir <pmuir at redhat.com> wrote:

> Unfortunately, I think so, yes. Ken, any thoughts?
>
> I'm sorry this didn't come up in planning!
>
> On 5 November 2015 at 17:41, Carl Trieloff <cctrieloff at redhat.com> wrote:
> >
> > Pete,
> >
> > Does this mean we also need to provide a HyperV option and Ken have the
> > MSI installer detect if it is installed and if so use it?
> >
> > Carl.
> >
> >
> >
> > On 11/05/2015 08:36 AM, Karanbir Singh wrote:
> >> -----BEGIN PGP SIGNED MESSAGE-----
> >> Hash: SHA1
> >>
> >> On 05/11/15 13:00, Todd Mancini wrote:
> >>> Only 1 Hypervisor can run at a time. If Hyper-V is enabled (and, on
> >>> most dev machines, it is enabled and it runs at boot time), when
> >>> you attempt to launch another hypervisor, the other hypervisor will
> >>> fail to launch, usually with some incomprehensible error message.
> >>>
> >>> We saw this a lot when Visual Studio users first tried to do
> >>> Android development using the default emulator in the ADK with
> >>> HAXM. And, due to the terrible error messages, people would
> >>> struggle for hours if not days to get it to work.
> >>>
> >>> The thing is -- you cannot turn off Hyper-V -- it's a PXE/boot-time
> >>> service. So even if you stop the service when Windows is running,
> >>> the virtulization hooks to the processor have already done their
> >>> business and cannot be undone.
> >>>
> >>> This leaves you with two options -- (1) uninstall Hyper-V, which no
> >>> dev wants to do because they likely need it for other things or (2)
> >>> work some crazy magic with BCDEDIT to create a new boot entry so
> >>> that you can optionally boot Windows without hyper-V. Which means
> >>> that if you went this route and wanted to do android dev or, in our
> >>> case, PDK dev, then you'd actually need to reboot first, do your
> >>> work, and then likely reboot when you were done to get back to your
> >>> 'normal' state.
> >>>
> >>> Needless to say, pretty much everyone that tried this (myself
> >>> included) gave up on it after a few days.
> >>>
> >> This is pretty much what I have seen as well. However, hyper-v isnt
> >> installed as default, it needs to be opted into ( win 8/10 most
> >> editions ). Once you are there, then its quite hard getting rid of it,
> >> without also redoing all the work ( and therefore the reason why one
> >> had hyper-v on there in the first place ).
> >>
> >> Its possible to install and run vbox on the machine, fairly cleanly,
> >> on a fresh install of windows (or one that hasent had hyper-v enabled
> >> yet ).
> >>
> >> Atlas index used to publish per hypervisor stats - so it might be
> >> worth circling back there and working out what makes most sense. There
> >> are a fair few people in 'enterprise' roles that also use vmware on
> >> windows as their vagrant hypervisor ( I cant quantify that though ).
> >>
> >>
> >> Regards.
> >>
> >>
> >>
> >> - --
> >> Karanbir Singh, The CentOS Project, London, UK
> >> RH Ext. 8274455 | DID: 0044 207 009 4455
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> >>
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-- 
Ken Finnigan
Principal Software Engineer
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