[Container-tools] HyperV

[Carl Trieloff]

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:
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> 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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