Xen users - Feb 2011 - Xen 4.0.1 HVM 2008R2 Citrix PV Drivers

I have been google for a few days now trying to get the Citrix PV Drivers to
work on a server 2008 R2 HVM guest.  I get the machine up and running then I
install the cirtix PV drivers.  I have tried both making and not making the
registry change.  Once I reboot the server I get stuck at the boot screen.

The xen log says:

XENUTIL: WARNING: CloseFrontend: timed out in XenbusWaitForBackendStateChange:
/local/domain/0/backend/console/58/0 in state INITIALISING; retry.


If I enable VNC then it says the same thing but its waiting for vfb.

I see a post about this specific problem from a few months ago but there
doesn''t seem to be any resolution.

What is the current status of Citrix PV drivers on server 2008R2?  Anyone have
any leads on what to try next? Anyone have it working?

Thanks
Roy


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On Tue, Feb 22, 2011 at 05:26:46PM -0600, Roy T. Collins
wrote:
>    I have been google for a few days now trying to get the Citrix PV
Drivers
>    to work on a server 2008 R2 HVM guest.  I get the machine up and running
>    then I install the cirtix PV drivers.  I have tried both making and not
>    making the registry change.  Once I reboot the server I get stuck at the
>    boot screen.
> 
>    The xen log says:
> 
>    XENUTIL: WARNING: CloseFrontend: timed out in
>    XenbusWaitForBackendStateChange: /local/domain/0/backend/console/58/0 in
>    state INITIALISING; retry.
> 
>    If I enable VNC then it says the same thing but its waiting for vfb.
> 
>    I see a post about this specific problem from a few months ago but there
>    doesn''t seem to be any resolution.
> 
>    What is the current status of Citrix PV drivers on server 2008R2? 
Anyone
>    have any leads on what to try next? Anyone have it working?
> 
>    Thanks
> 
Citrix PV drivers obviously do run on XenServer and on XCP.

If you want to run them on plain Xen.org hypervisor,
you might need to set up some xenstore entries manually, 
ie. citrix pv drivers might assume some entries be present 
in xenstore that are not used by the traditional xen pv guests.

I think there has been some additions to those entries.

-- Pasi


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Do you have any info on what might be needed?  I have been searching the list
archives and google and I cant seem to find any leads on what to look for.  Any
points would be appreciated.

There must not be many on the list that are using the Citrix PV drivers.  

-----Original Message-----
From: Pasi Kärkkäinen [mailto:pasik@iki.fi] 
Sent: Wednesday, February 23, 2011 2:30 AM
To: Roy T. Collins
Cc: ''xen-users@lists.xensource.com''
Subject: Re: [Xen-users] Xen 4.0.1 HVM 2008R2 Citrix PV Drivers

On Tue, Feb 22, 2011 at 05:26:46PM -0600, Roy T. Collins
wrote:
>    I have been google for a few days now trying to get the Citrix PV
Drivers
>    to work on a server 2008 R2 HVM guest.  I get the machine up and running
>    then I install the cirtix PV drivers.  I have tried both making and not
>    making the registry change.  Once I reboot the server I get stuck at the
>    boot screen.
> 
>    The xen log says:
> 
>    XENUTIL: WARNING: CloseFrontend: timed out in
>    XenbusWaitForBackendStateChange: /local/domain/0/backend/console/58/0 in
>    state INITIALISING; retry.
> 
>    If I enable VNC then it says the same thing but its waiting for vfb.
> 
>    I see a post about this specific problem from a few months ago but there
>    doesn''t seem to be any resolution.
> 
>    What is the current status of Citrix PV drivers on server 2008R2? 
Anyone
>    have any leads on what to try next? Anyone have it working?
> 
>    Thanks
> 
Citrix PV drivers obviously do run on XenServer and on XCP.

If you want to run them on plain Xen.org hypervisor,
you might need to set up some xenstore entries manually, 
ie. citrix pv drivers might assume some entries be present 
in xenstore that are not used by the traditional xen pv guests.

I think there has been some additions to those entries.

-- Pasi


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Xen-users@lists.xensource.com
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On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
<RTC@ddt.biochem.umn.edu> wrote:
> Do you have any info on what might be needed?  I have been searching the
list archives and google and I cant seem to find any leads on what to look for.
 Any points would be appreciated.
>
> There must not be many on the list that are using the Citrix PV drivers.
XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.

XCP 0.5 and 1.0beta drivers work with some extra effort. Execute the
following commands in dom0 when Windows hangs on boot:
xenstore-rm /local/domain/0/backend/console/[domU_id]
xenstore-rm /local/domain/0/backend/vfb/[domU_id]

Eventually I''ll submit a patch so the newer XCP drivers will just work.

-- 

Keith Coleman

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Excellent that did the trick!   Thanks so much.

-----Original Message-----
From: Keith Coleman [mailto:list.keith@scaltro.com] 
Sent: Wednesday, February 23, 2011 2:18 PM
To: Roy T. Collins
Cc: Pasi Kärkkäinen; xen-users@lists.xensource.com
Subject: Re: [Xen-users] Xen 4.0.1 HVM 2008R2 Citrix PV Drivers

On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
<RTC@ddt.biochem.umn.edu> wrote:
> Do you have any info on what might be needed?  I have been searching the
list archives and google and I cant seem to find any leads on what to look for.
 Any points would be appreciated.
>
> There must not be many on the list that are using the Citrix PV drivers.
XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.

XCP 0.5 and 1.0beta drivers work with some extra effort. Execute the
following commands in dom0 when Windows hangs on boot:
xenstore-rm /local/domain/0/backend/console/[domU_id]
xenstore-rm /local/domain/0/backend/vfb/[domU_id]

Eventually I''ll submit a patch so the newer XCP drivers will just work.

-- 

Keith Coleman

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Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

On Wed, Feb 23, 2011 at 03:18:06PM -0500, Keith Coleman
wrote:
> On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
> <RTC@ddt.biochem.umn.edu> wrote:
> > Do you have any info on what might be needed?  I have been searching
the list archives and google and I cant seem to find any leads on what to look
for.  Any points would be appreciated.
> >
> > There must not be many on the list that are using the Citrix PV
drivers.
> 
> XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.
> 
> XCP 0.5 and 1.0beta drivers work with some extra effort. Execute the
> following commands in dom0 when Windows hangs on boot:
> xenstore-rm /local/domain/0/backend/console/[domU_id]
> xenstore-rm /local/domain/0/backend/vfb/[domU_id]
> 
> Eventually I''ll submit a patch so the newer XCP drivers will just
work.
> 
A patch for this would be very much appreciated!

Thanks,

-- Pasi


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> 
> On Wed, Feb 23, 2011 at 03:18:06PM -0500, Keith Coleman wrote:
> > On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
> > <RTC@ddt.biochem.umn.edu> wrote:
> > > Do you have any info on what might be needed?  I have been
searching the
> list archives and google and I cant seem to find any leads on what to look
> for.  Any points would be appreciated.
> > >
> > > There must not be many on the list that are using the Citrix PV
drivers.
> >
> > XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.
> >
> > XCP 0.5 and 1.0beta drivers work with some extra effort. Execute the
> > following commands in dom0 when Windows hangs on boot:
> > xenstore-rm /local/domain/0/backend/console/[domU_id]
> > xenstore-rm /local/domain/0/backend/vfb/[domU_id]
> >
> > Eventually I''ll submit a patch so the newer XCP drivers will
just work.
> >
> 
> A patch for this would be very much appreciated!
> 
Is the timing of the ''xenstore-rm'' command critical? If not
you could put it in a shell script in /usr/lib/xen/bin that calls qemu-dm and
call that from your script file instead. I do that when I want to turn off log
throttling eg:

#!/bin/sh
/usr/bin/xenstore-write /local/domain/$2/log-throttling 0
exec /usr/lib64/xen/bin/qemu-dm $@

just replace my call to xenstore-write with your calls to xenstore-rm

Of course if the timing is critical and it has to be done when windows hangs it
will be a bit harder...

James

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On Thu, Mar 24, 2011 at 10:55:21AM +1100, James Harper
wrote:
> > 
> > On Wed, Feb 23, 2011 at 03:18:06PM -0500, Keith Coleman wrote:
> > > On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
> > > <RTC@ddt.biochem.umn.edu> wrote:
> > > > Do you have any info on what might be needed?  I have been
searching the
> > list archives and google and I cant seem to find any leads on what to
look
> > for.  Any points would be appreciated.
> > > >
> > > > There must not be many on the list that are using the Citrix
PV drivers.
> > >
> > > XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.
> > >
> > > XCP 0.5 and 1.0beta drivers work with some extra effort. Execute
the
> > > following commands in dom0 when Windows hangs on boot:
> > > xenstore-rm /local/domain/0/backend/console/[domU_id]
> > > xenstore-rm /local/domain/0/backend/vfb/[domU_id]
> > >
> > > Eventually I''ll submit a patch so the newer XCP drivers
will just work.
> > >
> > 
> > A patch for this would be very much appreciated!
> > 
> 
> Is the timing of the ''xenstore-rm'' command critical? If
not you could put it in a shell script in /usr/lib/xen/bin that calls qemu-dm
and call that from your script file instead. I do that when I want to turn off
log throttling eg:
> 
> #!/bin/sh
> /usr/bin/xenstore-write /local/domain/$2/log-throttling 0
> exec /usr/lib64/xen/bin/qemu-dm $@
> 
> just replace my call to xenstore-write with your calls to xenstore-rm
> 
> Of course if the timing is critical and it has to be done when windows
hangs it will be a bit harder...
> 
Thanks for the hint! I''m not sure if it''s timing sensitive..

-- Pasi


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On Wed, Mar 23, 2011 at 8:10 PM, Pasi Kärkkäinen <pasik@iki.fi>
wrote:
> On Thu, Mar 24, 2011 at 10:55:21AM +1100, James Harper wrote:
>> >
>> > On Wed, Feb 23, 2011 at 03:18:06PM -0500, Keith Coleman wrote:
>> > > On Wed, Feb 23, 2011 at 11:09 AM, Roy T. Collins
>> > > <RTC@ddt.biochem.umn.edu> wrote:
>> > > > Do you have any info on what might be needed?  I have
been searching the
>> > list archives and google and I cant seem to find any leads on what
to look
>> > for.  Any points would be appreciated.
>> > > >
>> > > > There must not be many on the list that are using the
Citrix PV drivers.
>> > >
>> > > XCP 0.1.1 winpv drivers work on xen.org 3.4.3 and 4.x.
>> > >
>> > > XCP 0.5 and 1.0beta drivers work with some extra effort.
Execute the
>> > > following commands in dom0 when Windows hangs on boot:
>> > > xenstore-rm /local/domain/0/backend/console/[domU_id]
>> > > xenstore-rm /local/domain/0/backend/vfb/[domU_id]
>> > >
>> > > Eventually I''ll submit a patch so the newer XCP
drivers will just work.
>> > >
>> >
>> > A patch for this would be very much appreciated!
>> >
>>
>> Is the timing of the ''xenstore-rm'' command critical?
If not you could put it in a shell script in /usr/lib/xen/bin that calls qemu-dm
and call that from your script file instead. I do that when I want to turn off
log throttling eg:
>>
>> #!/bin/sh
>> /usr/bin/xenstore-write /local/domain/$2/log-throttling 0
>> exec /usr/lib64/xen/bin/qemu-dm $@
>>
>> just replace my call to xenstore-write with your calls to xenstore-rm
>>
>> Of course if the timing is critical and it has to be done when windows
hangs it will be a bit harder...
>>
>
> Thanks for the hint! I''m not sure if it''s timing
sensitive..
>
It''s not sensitive so this will work.

--

Keith Coleman

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