[libvirt] libvirt Hyper-v 2012 r2 fix

Wed Apr 16 23:51:04 UTC 2014

Bringing the discussion back online...

Okay so figured out what was going on (to see what the actual error was,
please read the latest email in the conversation). Classes in
hyperv/hyperv_wmi_generator.input

a) Msvm_MemorySettingData
b) Msvm_ProcessorSettingData
c) Msvm_VirtualSystemSettingData

Have been upgraded to the definitions found at the new v2 doc
http://msdn.microsoft.com/en-us/library/hh850176(v=vs.85).aspx,

I put in this note at the beginning of the
hyperv/hyperv_wmi_generator.input file.

With these changes and a few other minor ones, I can confirm that the
functionality mimics the hyperv 2008 version. That is, we get the same
functionality (supported vs non-supported drivers).

However, this might also mean the end of support of Hyper-V 2008 if it is
just a replace of the existing classes. What do you guys think? Should we
continue to support 2008 (~6 years old) OR is it OK to assume that Hyperv-V
2012 will be the default standard moving forward.

Thanks,
Vik.

On Wed, Apr 16, 2014 at 10:23 AM, vikhyath reddy
<reddy.vikhyath at gmail.com>wrote:

> Taking this offline...
>
> Hi Matthias,
>
> Well... from more testing what I found is that openwsman breaks during
> serialization.
>
> When I run against hyper-v 2012 r2
>
> ---------------------------------------------
>
> virsh # list --all
>
> *1984  testing-1                      running*
> ---------------------------------------------
>
> virsh # dumpxml testing-1
>
> *2014-04-16 16:53:54.049+0000: 10693: info : libvirt version: 1.2.3*
>
> *2014-04-16 16:53:54.049+0000: 10693: error : hypervDebugHandler:1403 :
> openwsman error: not enough (0 < 1) instances of element SystemName*
>
> *2014-04-16 16:53:54.049+0000: 10693: error : hypervDebugHandler:1403 :
> openwsman error: handling of element "**SystemName**" failed = -3*
>
> *2014-04-16 16:53:54.049+0000: 10693: error : hypervDebugHandler:1403 :
> openwsman error: size of 1 structures "Msvm_VirtualSystemSettingData"
> exceeds stopper (0x7fb86a4c5d18 > (nil))*
>
> *2014-04-16 16:53:54.049+0000: 10693: error : hypervDebugHandler:1403 :
> openwsman error: Error during serialization*
>
> *error: internal error: Could not deserialize pull response item*
>
> *-------------------------------------------------*
>
> I was also looking at
> http://www.redhat.com/archives/libvir-list/2011-July/msg00768.html and
> found that you submitted a patch. It looks like from class
>
>
> class Msvm_VirtualSystemSettingData
>
>
> property *SystemName*
>
>
> is being returned NULL or is is non existent in the pull response. Any pointers as to how can I check what is being returned in the pull response (if any)?
>
>
> Thanks!
>
> Vik.
>
>
>
> On Wed, Apr 16, 2014 at 1:35 AM, Matthias Bolte <
> matthias.bolte at googlemail.com> wrote:
>
>> 2014-04-16 3:26 GMT+02:00 vikhyath reddy <reddy.vikhyath at gmail.com>:
>> > Update,
>> >
>> > I tried adding root\virtualization\v2 to the namespace in libvirt source
>> > code for hyperv. I ran some tests and it seems to work. I get the same
>> > functionality (supported vs non-supported drivers) as hyper-v 2008.
>> >
>> > Do you guys want me to submit the patch? If yes, what all do I need to
>> > update to get the patch in?
>> >
>> > Thanks,
>> > Vik.
>> >
>> >
>> > On Tue, Apr 15, 2014 at 5:26 PM, vikhyath reddy <
>> reddy.vikhyath at gmail.com>
>> > wrote:
>> >>
>> >> Hello everyone,
>> >>
>> >> Thanks for libvirt. I did see on the libvirt page that hyper-v 2008 is
>> >> supported (which it does). So I tried running it on Hyper-v 2012 r2 but
>> >> virsh fails to connect by an error that says
>> >>
>> >> "error: internal error: SOAP fault during enumeration: code 's:Sender',
>> >> subcode 'n:CannotProcessFilter', reason 'The data source could not
>> process
>> >> the filter. The filter might be missing or it might be invalid. Change
>> the
>> >> filter and try the request again.  ', detail '500The specified class
>> does
>> >> not exist in the given namespace. HRESULT
>> 0x8033801a0052150858778HRESULTThe
>> >> specified class does not exist in the given namespace. ' "
>> >>
>> >> Upon looking into the Hyper-v 2012 r2 server event logs, I found that
>> this
>> >> is going on
>> >>
>> >> [ Source: WMI-Activity
>> >> Event ID: 5898
>> >> Microsoft-Windows-WMI-Activity/Operational ]
>> >>
>> >>
>> >> Id = {62D480B2-58EF-0000-E580-D462EF58CF01}; ClientMachine =
>> >> VIKHYPERV; User = VIKHYPERV\Administrator; ClientProcessId = 884;
>> >> Component = Unknown; Operation = Start IWbemServices::ExecQuery -
>> >> root\virtualization : select * from Msvm_ComputerSystem where
>> >> Description = "Microsoft Hosting Computer System" ; ResultCode =
>> >> 0x80041010; PossibleCause = Unknown
>> >>
>> >> Note that Msvm_ComputerSystem is missing in the namespace
>> >> root\virtualization. Upon further investigation, I found that the new
>> >> namespace where Msvm_ComputerSystem is located is at
>> root\virtualization\v2
>> >>
>> >> Is (it possible?) there some way I can know where in the source code,
>> >> libvirt is specifying the namespace so that I can try patching it up
>> and see
>> >> if it fixes things?
>> >>
>> >> Thanks for all your help,
>> >> Vik.
>>
>> Yes, send a patch for this.
>>
>> To get your patch in, you need to send it to this list for review.
>> After a successful review it'll be pushed to the git repo by someone
>> with commit access.
>>
>> See http://libvirt.org/hacking.html for more details about working on
>> the source and submitting patches.
>>
>> --
>> Matthias Bolte
>> http://photron.blogspot.com
>>
>
>
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