Error in Hyper-V modules hv_vmbus

Error in Hyper-V modules hv_vmbus

[root]

Hello

I have compiled and installed the new 2.6.39-rc5 linux kernel with 
Microsoft Hyper-V modules enabled on my Debian Squeeze system. After a 
reboot I get these errors (sorry can post only screenshots because I 
can't copy the log):

http://docs.homelinux.org/hv

and system doesn't boot. What's wrong? I think modprobe can't load 
hv_vmbus?!?

Regards
Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[KY Srinivasan]

> -----Original Message-----
> From: root [mailto:root@docs.homelinux.org]
> Sent: Saturday, April 30, 2011 10:40 AM
> To: linux-kernel@vger.kernel.org; KY Srinivasan
> Subject: Error in Hyper-V modules hv_vmbus
> 
> Hello
> 
> I have compiled and installed the new 2.6.39-rc5 linux kernel with
> Microsoft Hyper-V modules enabled on my Debian Squeeze system. After a
> reboot I get these errors (sorry can post only screenshots because I
> can't copy the log):

What is the version of the Windows host. I have seen some issues with
older hosts, where the vmbus driver does not get the correct irq. I have 
submitted a patch for this (this is yet to be applied by Greg).

Regards,

K. Y

Re: Error in Hyper-V modules hv_vmbus

[root]

>
>> -----Original Message-----
>> From: root [mailto:root@docs.homelinux.org]
>> Sent: Saturday, April 30, 2011 10:40 AM
>> To: linux-kernel@vger.kernel.org; KY Srinivasan
>> Subject: Error in Hyper-V modules hv_vmbus
>>
>> Hello
>>
>> I have compiled and installed the new 2.6.39-rc5 linux kernel with
>> Microsoft Hyper-V modules enabled on my Debian Squeeze system. After a
>> reboot I get these errors (sorry can post only screenshots because I
>> can't copy the log):
> What is the version of the Windows host. I have seen some issues with
> older hosts, where the vmbus driver does not get the correct irq. I have
> submitted a patch for this (this is yet to be applied by Greg).
>
> Regards,
>
> K. Y
>

Windows Server Core 2008 R2 with SP2

Regards
Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[KY Srinivasan]

> -----Original Message-----
> From: root [mailto:root@docs.homelinux.org]
> Sent: Sunday, May 01, 2011 8:37 AM
> To: KY Srinivasan
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: Error in Hyper-V modules hv_vmbus
> 
> 
> >
> >> -----Original Message-----
> >> From: root [mailto:root@docs.homelinux.org]
> >> Sent: Saturday, April 30, 2011 10:40 AM
> >> To: linux-kernel@vger.kernel.org; KY Srinivasan
> >> Subject: Error in Hyper-V modules hv_vmbus
> >>
> >> Hello
> >>
> >> I have compiled and installed the new 2.6.39-rc5 linux kernel with
> >> Microsoft Hyper-V modules enabled on my Debian Squeeze system. After a
> >> reboot I get these errors (sorry can post only screenshots because I
> >> can't copy the log):
> > What is the version of the Windows host. I have seen some issues with
> > older hosts, where the vmbus driver does not get the correct irq. I have
> > submitted a patch for this (this is yet to be applied by Greg).
> >
> > Regards,
> >
> > K. Y
> >
> 
> Windows Server Core 2008 R2 with SP2
Thank you. I will get back to you after some testing locally.
I have already submitted a patch for dealing with irq allocation 
on some windows hosts (yet to be applied). I will verify if this patch fixes your problem. 

Regards,

K. Y

> 
> Regards
> Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[KY Srinivasan]

> -----Original Message-----
> From: root [mailto:root@docs.homelinux.org]
> Sent: Sunday, May 01, 2011 8:37 AM
> To: KY Srinivasan
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: Error in Hyper-V modules hv_vmbus
> 
> 
> >
> >> -----Original Message-----
> >> From: root [mailto:root@docs.homelinux.org]
> >> Sent: Saturday, April 30, 2011 10:40 AM
> >> To: linux-kernel@vger.kernel.org; KY Srinivasan
> >> Subject: Error in Hyper-V modules hv_vmbus
> >>
> >> Hello
> >>
> >> I have compiled and installed the new 2.6.39-rc5 linux kernel with
> >> Microsoft Hyper-V modules enabled on my Debian Squeeze system. After a
> >> reboot I get these errors (sorry can post only screenshots because I
> >> can't copy the log):
> > What is the version of the Windows host. I have seen some issues with
> > older hosts, where the vmbus driver does not get the correct irq. I have
> > submitted a patch for this (this is yet to be applied by Greg).
> >
> > Regards,
> >
> > K. Y
> >
> 
> Windows Server Core 2008 R2 with SP2

This is a known problem and a fix has been submitted - the patch is yet to be applied
though. Once the hv patches that are in the queue are applied, this problem
will be fixed. In the interim, if you want an immediate fix, I could send you the patch
that will apply against the tree you have.

Regards,

K. Y
> 
> Regards
> Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[root]

 On Tue, 3 May 2011 13:42:43 +0000, KY Srinivasan wrote:
>> -----Original Message-----
>> From: root [mailto:root@docs.homelinux.org]
>> Sent: Sunday, May 01, 2011 8:37 AM
>> To: KY Srinivasan
>> Cc: linux-kernel@vger.kernel.org
>> Subject: Re: Error in Hyper-V modules hv_vmbus
>>
>>
>> >
>> >> -----Original Message-----
>> >> From: root [mailto:root@docs.homelinux.org]
>> >> Sent: Saturday, April 30, 2011 10:40 AM
>> >> To: linux-kernel@vger.kernel.org; KY Srinivasan
>> >> Subject: Error in Hyper-V modules hv_vmbus
>> >>
>> >> Hello
>> >>
>> >> I have compiled and installed the new 2.6.39-rc5 linux kernel 
>> with
>> >> Microsoft Hyper-V modules enabled on my Debian Squeeze system. 
>> After a
>> >> reboot I get these errors (sorry can post only screenshots 
>> because I
>> >> can't copy the log):
>> > What is the version of the Windows host. I have seen some issues 
>> with
>> > older hosts, where the vmbus driver does not get the correct irq. 
>> I have
>> > submitted a patch for this (this is yet to be applied by Greg).
>> >
>> > Regards,
>> >
>> > K. Y
>> >
>>
>> Windows Server Core 2008 R2 with SP2
>
> This is a known problem and a fix has been submitted - the patch is
> yet to be applied
> though. Once the hv patches that are in the queue are applied, this 
> problem
> will be fixed. In the interim, if you want an immediate fix, I could
> send you the patch
> that will apply against the tree you have.
>
> Regards,
>
> K. Y
>>
>> Regards
>> Juan Dos Santos

 Could You send me the patch? So I can test it, I am using the kernel 
 source from 
 http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc5.tar.bz2, 
 is the patch compatible with this kernel source?

 Regards
 Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[Hank Janssen]

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> > -----Original Message-----
> > From: root@docs.homelinux.org [mailto:root@docs.homelinux.org]
> > Sent: Tuesday, May 03, 2011 10:52 AM
> > To: KY Srinivasan
> > Cc: linux-kernel@vger.kernel.org
> > Subject: RE: Error in Hyper-V modules hv_vmbus
> >
> >  On Tue, 3 May 2011 13:42:43 +0000, KY Srinivasan wrote:
> > >> -----Original Message-----
> > >> From: root [mailto:root@docs.homelinux.org]
> > >> Sent: Sunday, May 01, 2011 8:37 AM
> > >> To: KY Srinivasan
> > >> Cc: linux-kernel@vger.kernel.org
> > >> Subject: Re: Error in Hyper-V modules hv_vmbus
> > >>
> > >> Windows Server Core 2008 R2 with SP2
> > >
> > > This is a known problem and a fix has been submitted - the patch is
> > > yet to be applied though. Once the hv patches that are in the queue
> > > are applied, this problem will be fixed. In the interim, if you want
> > > an immediate fix, I could send you the patch that will apply against
> > > the tree you have.
> > >
> > > Regards,
> > >
> > > K. Y
> > >>
> > >> Regards
> > >> Juan Dos Santos
> >
> >  Could You send me the patch? So I can test it, I am using the kernel
> > source from
> > http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc5.t
> > ar.bz2,  is the patch compatible with this kernel source?
> 
> This is a very old version of the hyper-V driver code compared to what is in
> Greg's tree and looking at the code It does not look like the problem you are
> seeing is the problem my patch fixes. We will do some additional testing and
> get back to you. It would be very useful if you can post the dmesg or stack
> trace that can shed additional light on the problem.

Juan,

I just fixed a few issues in Ubuntu 10.10 that might be similar.

I will spin up a debian system and see if I can reproduce the problem and submit a patch
To fix it.

Hank.


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RE: Error in Hyper-V modules hv_vmbus

[Hank Janssen]

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> 
> > > -----Original Message-----
> > > From: root@docs.homelinux.org [mailto:root@docs.homelinux.org]
> > > Sent: Tuesday, May 03, 2011 10:52 AM
> > > To: KY Srinivasan
> > > Cc: linux-kernel@vger.kernel.org
> > > Subject: RE: Error in Hyper-V modules hv_vmbus
> > >
> > >  On Tue, 3 May 2011 13:42:43 +0000, KY Srinivasan wrote:
> > > >> -----Original Message-----
> > > >> From: root [mailto:root@docs.homelinux.org]
> > > >> Sent: Sunday, May 01, 2011 8:37 AM
> > > >> To: KY Srinivasan
> > > >> Cc: linux-kernel@vger.kernel.org
> > > >> Subject: Re: Error in Hyper-V modules hv_vmbus
> > > >>
> > > >> Windows Server Core 2008 R2 with SP2
> > > >
> > > > This is a known problem and a fix has been submitted - the patch
> > > > is yet to be applied though. Once the hv patches that are in the
> > > > queue are applied, this problem will be fixed. In the interim, if
> > > > you want an immediate fix, I could send you the patch that will
> > > > apply against the tree you have.
> > > >
> > > > Regards,
> > > >
> > > > K. Y
> > > >>
> > > >> Regards
> > > >> Juan Dos Santos
> > >
> > >  Could You send me the patch? So I can test it, I am using the
> > > kernel source from
> > > http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc5
> > > .t ar.bz2,  is the patch compatible with this kernel source?
> >
> > This is a very old version of the hyper-V driver code compared to what
> > is in Greg's tree and looking at the code It does not look like the
> > problem you are seeing is the problem my patch fixes. We will do some
> > additional testing and get back to you. It would be very useful if you
> > can post the dmesg or stack trace that can shed additional light on the
> problem.

Juan,
 
I just fixed a few issues in Ubuntu 10.10 that might be similar.
 
I will spin up a debian system and see if I can reproduce the problem and
submit a patch To fix it.

Hank.


ÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a­¢f£¢·hšïêÿ‘êçz_è®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨è­Ú&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥

Re: Error in Hyper-V modules hv_vmbus

[Juan Dos Santos]

>>>> -----Original Message-----
>>>> From: root@docs.homelinux.org [mailto:root@docs.homelinux.org]
>>>> Sent: Tuesday, May 03, 2011 10:52 AM
>>>> To: KY Srinivasan
>>>> Cc: linux-kernel@vger.kernel.org
>>>> Subject: RE: Error in Hyper-V modules hv_vmbus
>>>>
>>>>   On Tue, 3 May 2011 13:42:43 +0000, KY Srinivasan wrote:
>>>>>> -----Original Message-----
>>>>>> From: root [mailto:root@docs.homelinux.org]
>>>>>> Sent: Sunday, May 01, 2011 8:37 AM
>>>>>> To: KY Srinivasan
>>>>>> Cc: linux-kernel@vger.kernel.org
>>>>>> Subject: Re: Error in Hyper-V modules hv_vmbus
>>>>>>
>>>>>> Windows Server Core 2008 R2 with SP2
>>>>> This is a known problem and a fix has been submitted - the patch
>>>>> is yet to be applied though. Once the hv patches that are in the
>>>>> queue are applied, this problem will be fixed. In the interim, if
>>>>> you want an immediate fix, I could send you the patch that will
>>>>> apply against the tree you have.
>>>>>
>>>>> Regards,
>>>>>
>>>>> K. Y
>>>>>> Regards
>>>>>> Juan Dos Santos
>>>>   Could You send me the patch? So I can test it, I am using the
>>>> kernel source from
>>>> http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc5
>>>> .t ar.bz2,  is the patch compatible with this kernel source?
>>> This is a very old version of the hyper-V driver code compared to what
>>> is in Greg's tree and looking at the code It does not look like the
>>> problem you are seeing is the problem my patch fixes. We will do some
>>> additional testing and get back to you. It would be very useful if you
>>> can post the dmesg or stack trace that can shed additional light on the
>> problem.
> Juan,
>
> I just fixed a few issues in Ubuntu 10.10 that might be similar.
>
> I will spin up a debian system and see if I can reproduce the problem and
> submit a patch To fix it.
>
> Hank.
Hi Hank

Ok thanks, tomorrow I will post dmesg and more debuging stuff about this 
problem...

Regards
Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[Hank Janssen]

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> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org [mailto:linux-kernel-
> owner@vger.kernel.org] On Behalf Of jdossantos@docs.homelinux.org
> Sent: Thursday, May 05, 2011 11:05 AM
> To: Hank Janssen
> Cc: KY Srinivasan; linux-kernel@vger.kernel.org
> Subject: RE: Error in Hyper-V modules hv_vmbus
> 
> > Yes in ubuntu server (i tested the newest version 11.04) there is no
> > problem, the hyper-v modules are compiled and activated
> > as default in the released kernel (2.6.38-8), network, timesync and
> > all others integrated components are working fine. This is the lsmod
> > output:
> > lsmod | grep hv_
> > hv_utils               12850  0
> > hv_netvsc              36467  0
> > hv_timesource          12423  0 [permanent]
> > hv_vmbus               50431  2 hv_utils,hv_netvsc
> >
> > Now I have downloaded the newest rc kernel and done the same steps
> > like in the debian installation, after a reboot I get same errors and
> > integrated components failed to works...Now I check the hyper-v
> > modules source from 2.6.38-8 ubuntu kernel and the new one
> >
> > Regards
> > Juan Dos Santos
> 
>  Ok, now I have setup again debian 6.0.1a and compiled the 2.6.39-rc6
>  kernel but with the hyper-v staging drivers from ubuntu kernel 2.6.38-8
>  source (just replaced the hv directory, I know maybe it's dirty :) ).
>  But now all is working fine! I have now a debian system with kernel
>  2.6.39-rc6 with all integrated components running..looks that the
>  hyper-v modules in the ubuntu kernel are more stable that in the newest
>  official rc kernel?!
> 
>  Regards
>  Juan

Juan,

I just spun up the debian VM and I downloaded the latest staging and the rc5 that
failed for you and I was about to compile it.

Let me see what happened between rc5 and rc6 to see what might have solved the
problem you were seeing.

I would say that in general the older kernels (certainly 35 and 36) are more stable
than mainline for our drivers. We are making so many changes to mainline right now 
and that sometimes there are a few bugs that creep in that we have not caught yet. 

They are not so much functional as structural changes.

But I would not recommend running it in production unless you like to live
dangerously. :)

Hank.



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RE: Error in Hyper-V modules hv_vmbus

[jdossantos]

 On Thu, 05 May 2011 14:05:11 +0200, jdossantos@docs.homelinux.org 
 wrote:
> On Wed, 4 May 2011 16:00:52 +0000, Hank Janssen wrote:
>>> -----Original Message-----
>>> From: jdossantos@docs.homelinux.org
>>> [mailto:jdossantos@docs.homelinux.org]
>>> Sent: Wednesday, May 04, 2011 2:48 AM
>>> To: Hank Janssen
>>> Cc: KY Srinivasan; linux-kernel@vger.kernel.org
>>> Subject: Re: Error in Hyper-V modules hv_vmbus
>>> > Hank.
>>>
>>>  Here is my step by step protocol:
>>
>> Thanks for the detailed setup. I will be trying it with this.
>>
>>>  lsmod | grep hv_
>>>  hv_timesource           1055  0 [permanent]
>>>  hv_vmbus               48554  1
>>>
>>>  In the logs and with lsmod i see the timesource module running, 
>>> but
>>> the
>>>  time is not in sync with the windows host.
>>>  Shutdown function also dosn't work, seems that nothing of the
>>>  integrated components are working..hv_netvsc,hv_blkvsc,hv_storvsc 
>>> are
>>>  not
>>>  loaded?! But modinfo provides information:
>>
>> Timesource makes sure that the clock does not drift and uses Hyper-V 
>> for
>> Its stable time source.
>>
>> The setting of the clock equal to the host is provided by the 
>> hv_utils.ko
>> Module. This module also provides heartbeat, shutdown and KVP 
>> functionality.
>>
>>
>>>  After that I enabled the synthetic network card, but also here..it
>>>  doesn't work and I don't see any hv_netvsc
>>>  module loaded, so I tried to load it "by hand" with modprobe
>>>  hv_netvsc..but I get a modprobe timeout and nothing happens..
>>
>> I should know more in the next day or so when I get a VM up and 
>> running.
>>
>> It works fine on Ubuntu, I submitted a few patches to them a few 
>> weeks ago
>> To fix some other problems (these patches are already in mainline)
>>
>> Hank.
> Hi Hank
>
> Yes in ubuntu server (i tested the newest version 11.04) there is no
> problem, the hyper-v modules are compiled and activated
> as default in the released kernel (2.6.38-8), network, timesync and
> all others integrated components are working fine. This is the lsmod
> output:
> lsmod | grep hv_
> hv_utils               12850  0
> hv_netvsc              36467  0
> hv_timesource          12423  0 [permanent]
> hv_vmbus               50431  2 hv_utils,hv_netvsc
>
> Now I have downloaded the newest rc kernel and done the same steps
> like in the debian installation, after a reboot I get same errors and
> integrated components failed to works...Now I check the hyper-v
> modules source from 2.6.38-8 ubuntu kernel and the new one
>
> Regards
> Juan Dos Santos

 Ok, now I have setup again debian 6.0.1a and compiled the 2.6.39-rc6 
 kernel but with the hyper-v staging drivers from ubuntu kernel 2.6.38-8 
 source (just replaced the hv directory, I know maybe it's dirty :) ). 
 But now all is working fine! I have now a debian system with kernel 
 2.6.39-rc6 with all integrated components running..looks that the 
 hyper-v modules in the ubuntu kernel are more stable that in the newest 
 official rc kernel?!

 Regards
 Juan

RE: Error in Hyper-V modules hv_vmbus

[jdossantos]

 On Wed, 4 May 2011 16:00:52 +0000, Hank Janssen wrote:
>> -----Original Message-----
>> From: jdossantos@docs.homelinux.org
>> [mailto:jdossantos@docs.homelinux.org]
>> Sent: Wednesday, May 04, 2011 2:48 AM
>> To: Hank Janssen
>> Cc: KY Srinivasan; linux-kernel@vger.kernel.org
>> Subject: Re: Error in Hyper-V modules hv_vmbus
>> > Hank.
>>
>>  Here is my step by step protocol:
>
> Thanks for the detailed setup. I will be trying it with this.
>
>>  lsmod | grep hv_
>>  hv_timesource           1055  0 [permanent]
>>  hv_vmbus               48554  1
>>
>>  In the logs and with lsmod i see the timesource module running, but
>> the
>>  time is not in sync with the windows host.
>>  Shutdown function also dosn't work, seems that nothing of the
>>  integrated components are working..hv_netvsc,hv_blkvsc,hv_storvsc 
>> are
>>  not
>>  loaded?! But modinfo provides information:
>
> Timesource makes sure that the clock does not drift and uses Hyper-V 
> for
> Its stable time source.
>
> The setting of the clock equal to the host is provided by the 
> hv_utils.ko
> Module. This module also provides heartbeat, shutdown and KVP 
> functionality.
>
>
>>  After that I enabled the synthetic network card, but also here..it
>>  doesn't work and I don't see any hv_netvsc
>>  module loaded, so I tried to load it "by hand" with modprobe
>>  hv_netvsc..but I get a modprobe timeout and nothing happens..
>
> I should know more in the next day or so when I get a VM up and 
> running.
>
> It works fine on Ubuntu, I submitted a few patches to them a few 
> weeks ago
> To fix some other problems (these patches are already in mainline)
>
> Hank.
 Hi Hank

 Yes in ubuntu server (i tested the newest version 11.04) there is no 
 problem, the hyper-v modules are compiled and activated
 as default in the released kernel (2.6.38-8), network, timesync and all 
 others integrated components are working fine. This is the lsmod
 output:
 lsmod | grep hv_
 hv_utils               12850  0
 hv_netvsc              36467  0
 hv_timesource          12423  0 [permanent]
 hv_vmbus               50431  2 hv_utils,hv_netvsc

 Now I have downloaded the newest rc kernel and done the same steps like 
 in the debian installation, after a reboot I get same errors and 
 integrated components failed to works...Now I check the hyper-v modules 
 source from 2.6.38-8 ubuntu kernel and the new one

 Regards
 Juan Dos Santos

RE: Error in Hyper-V modules hv_vmbus

[Hank Janssen]

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> -----Original Message-----
> From: jdossantos@docs.homelinux.org
> [mailto:jdossantos@docs.homelinux.org]
> Sent: Wednesday, May 04, 2011 2:48 AM
> To: Hank Janssen
> Cc: KY Srinivasan; linux-kernel@vger.kernel.org
> Subject: Re: Error in Hyper-V modules hv_vmbus
> > Hank.
> 
>  Here is my step by step protocol:

Thanks for the detailed setup. I will be trying it with this.

>  lsmod | grep hv_
>  hv_timesource           1055  0 [permanent]
>  hv_vmbus               48554  1
> 
>  In the logs and with lsmod i see the timesource module running, but
> the
>  time is not in sync with the windows host.
>  Shutdown function also dosn't work, seems that nothing of the
>  integrated components are working..hv_netvsc,hv_blkvsc,hv_storvsc are
>  not
>  loaded?! But modinfo provides information:

Timesource makes sure that the clock does not drift and uses Hyper-V for
Its stable time source. 

The setting of the clock equal to the host is provided by the hv_utils.ko
Module. This module also provides heartbeat, shutdown and KVP functionality.

 
>  After that I enabled the synthetic network card, but also here..it
>  doesn't work and I don't see any hv_netvsc
>  module loaded, so I tried to load it "by hand" with modprobe
>  hv_netvsc..but I get a modprobe timeout and nothing happens..

I should know more in the next day or so when I get a VM up and running.

It works fine on Ubuntu, I submitted a few patches to them a few weeks ago
To fix some other problems (these patches are already in mainline)

Hank.

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Re: Error in Hyper-V modules hv_vmbus

[jdossantos]

>>
>> > > -----Original Message-----
>> > > From: root@docs.homelinux.org [mailto:root@docs.homelinux.org]
>> > > Sent: Tuesday, May 03, 2011 10:52 AM
>> > > To: KY Srinivasan
>> > > Cc: linux-kernel@vger.kernel.org
>> > > Subject: RE: Error in Hyper-V modules hv_vmbus
>> > >
>> > >  On Tue, 3 May 2011 13:42:43 +0000, KY Srinivasan wrote:
>> > > >> -----Original Message-----
>> > > >> From: root [mailto:root@docs.homelinux.org]
>> > > >> Sent: Sunday, May 01, 2011 8:37 AM
>> > > >> To: KY Srinivasan
>> > > >> Cc: linux-kernel@vger.kernel.org
>> > > >> Subject: Re: Error in Hyper-V modules hv_vmbus
>> > > >>
>> > > >> Windows Server Core 2008 R2 with SP2
>> > > >
>> > > > This is a known problem and a fix has been submitted - the 
>> patch
>> > > > is yet to be applied though. Once the hv patches that are in 
>> the
>> > > > queue are applied, this problem will be fixed. In the interim, 
>> if
>> > > > you want an immediate fix, I could send you the patch that 
>> will
>> > > > apply against the tree you have.
>> > > >
>> > > > Regards,
>> > > >
>> > > > K. Y
>> > > >>
>> > > >> Regards
>> > > >> Juan Dos Santos
>> > >
>> > >  Could You send me the patch? So I can test it, I am using the
>> > > kernel source from
>> > > 
>> http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc5
>> > > .t ar.bz2,  is the patch compatible with this kernel source?
>> >
>> > This is a very old version of the hyper-V driver code compared to 
>> what
>> > is in Greg's tree and looking at the code It does not look like 
>> the
>> > problem you are seeing is the problem my patch fixes. We will do 
>> some
>> > additional testing and get back to you. It would be very useful if 
>> you
>> > can post the dmesg or stack trace that can shed additional light 
>> on the
>> problem.
>
> Juan,
>
> I just fixed a few issues in Ubuntu 10.10 that might be similar.
>
> I will spin up a debian system and see if I can reproduce the problem 
> and
> submit a patch To fix it.
>
> Hank.

 Here is my step by step protocol:

 VM configuration:
 Host: Windows Server 2008 Core R2 with SP1
 Networkcard: Old emulated card
 Integratedservices: Shutdown, Timesync, Heartbeat
 CPU: 4
 Memory: 512 MB
 Harddisk: IDE 10 GB

 OS Installation:
 Debian Squeeze 6.0.1a (2.6.32-5-amd64)
 Standard installation without any installation packages

 Kernel installation:
 aptitude install kernel-package libncurses-dev
 cd /usr/src
 wget 
 http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.39-rc6.tar.bz2
 tar xfvj linux-2.6.39-rc6.tar.bz2
 cd linux-2.6.39-rc6/
 make clean
 make mrproper
 cp /boot/config-2.6.32-5-amd64 .config
 make menuconfig

 {Divice Drivers -> Stagin Drivers -> <M> Microsoft Hyper-V client 
 drivers}
 Here You can find the .config file http://docs.homelinux.org/hv/.config


 export CUNCURRENCY_LEVEL=4
 make-kpkg --append-to-version "-hyperv" --revision "1" --us --uc 
 --initrd kernel_image kernel_headers
 cd ..
 dpkg -i linux-image-2.6.39-rc6-hyperv_1_amd64.deb 
 linux-headers-2.6.39-rc6-hyperv_1_amd64.deb
 ls -l /boot/
 total 27640
 -rw-r--r-- 1 root root   106088 Mar  8 01:18 config-2.6.32-5-amd64
 -rw-r--r-- 1 root root   125214 May  4 11:31 config-2.6.39-rc6-hyperv
 drwxr-xr-x 3 root root     4096 May  4 12:56 grub
 -rw-r--r-- 1 root root  9095609 May  4 09:10 initrd.img-2.6.32-5-amd64
 -rw-r--r-- 1 root root 10388314 May  4 12:56 
 initrd.img-2.6.39-rc6-hyperv
 -rw-r--r-- 1 root root  1662514 Mar  8 01:18 System.map-2.6.32-5-amd64
 -rw-r--r-- 1 root root  1839410 May  4 12:52 
 System.map-2.6.39-rc6-hyperv
 -rw-r--r-- 1 root root  2418720 Mar  8 01:12 vmlinuz-2.6.32-5-amd64
 -rw-r--r-- 1 root root  2590800 May  4 12:52 vmlinuz-2.6.39-rc6-hyperv
 reboot

 After the reboot I get the "INFO: task modprobe:307 blocked for more 
 than 120 seconds." message
 and boot is haning for 170 seconds, here are the logs:
 http://docs.homelinux.org/hv/syslog
 http://docs.homelinux.org/hv/messages
 http://docs.homelinux.org/hv/dmesg

 lsmod | grep hv_
 hv_timesource           1055  0 [permanent]
 hv_vmbus               48554  1

 In the logs and with lsmod i see the timesource module running, but the 
 time is not in sync with the windows host.
 Shutdown function also dosn't work, seems that nothing of the 
 integrated components are working..hv_netvsc,hv_blkvsc,hv_storvsc are 
 not
 loaded?! But modinfo provides information:

 modinfo hv_vmbus
 filename:       
 /lib/modules/2.6.39-rc6-hyperv/kernel/drivers/staging/hv/hv_vmbus.ko
 version:        3.1
 license:        GPL
 srcversion:     334F59AED9605F8C3B7696F
 alias:          pci:v00001414d00005353sv*sd*bc*sc*i*
 alias:          
 dmi*:svn*MicrosoftCorporation*:pn*VirtualMachine*:rn*VirtualMachine*:
 depends:
 staging:        Y
 vermagic:       2.6.39-rc6-hyperv SMP mod_unload modversions
 parm:           vmbus_irq:int
 parm:           vmbus_loglevel:int

 modinfo hv_timesource
 filename:       
 /lib/modules/2.6.39-rc6-hyperv/kernel/drivers/staging/hv/hv_timesource.ko
 license:        GPL
 author:         K. Y. Srinivasan <ksrinivasan@novell.com>
 description:    HyperV based clocksource
 alias:          pci:v00001414d00005353sv*sd*bc*sc*i*
 alias:          
 dmi*:svn*MicrosoftCorporation*:pn*VirtualMachine*:rn*VirtualMachine*:
 depends:
 staging:        Y
 vermagic:       2.6.39-rc6-hyperv SMP mod_unload modversions

 modinfo hv_netvsc
 filename:       
 /lib/modules/2.6.39-rc6-hyperv/kernel/drivers/staging/hv/hv_netvsc.ko
 description:    Microsoft Hyper-V network driver
 version:        3.1
 license:        GPL
 srcversion:     EA7C82EAB799B90B4F6BFA6
 alias:          pci:v00001414d00005353sv*sd*bc*sc*i*
 alias:          
 dmi*:svn*MicrosoftCorporation*:pn*VirtualMachine*:rn*VirtualMachine*:
 depends:        hv_vmbus
 staging:        Y
 vermagic:       2.6.39-rc6-hyperv SMP mod_unload modversions
 parm:           ring_size:Ring buffer size (# of pages) (int)

 modinfo hv_storvsc
 filename:       
 /lib/modules/2.6.39-rc6-hyperv/kernel/drivers/staging/hv/hv_storvsc.ko
 description:    Microsoft Hyper-V virtual storage driver
 version:        3.1
 license:        GPL
 srcversion:     23688D30D5A66982D2BB67F
 depends:        scsi_mod,hv_vmbus
 staging:        Y
 vermagic:       2.6.39-rc6-hyperv SMP mod_unload modversions
 parm:           storvsc_ringbuffer_size:Ring buffer size (bytes) (int)

 modinfo hv_blkvsc
 filename:       
 /lib/modules/2.6.39-rc6-hyperv/kernel/drivers/staging/hv/hv_blkvsc.ko
 description:    Microsoft Hyper-V virtual block driver
 version:        3.1
 license:        GPL
 srcversion:     5B375CF1D6F5581A05B1026
 depends:        scsi_mod,hv_vmbus
 staging:        Y
 vermagic:       2.6.39-rc6-hyperv SMP mod_unload modversions
 parm:           blkvsc_ringbuffer_size:int
 parm:           ring_size:Ring buffer size (in bytes)


 After that I enabled the synthetic network card, but also here..it 
 doesn't work and I don't see any hv_netvsc
 module loaded, so I tried to load it "by hand" with modprobe 
 hv_netvsc..but I get a modprobe timeout and nothing happens..

 Can someone repruduce it? Is there a patch for kernel linux-2.6.39-rc6?

 Regards
 Juan Dos Santos