RE: [Xen-users] Windows PV driver live-migration support

["Suffin, Charlie" <Charlie.Suffin@xxxxxxxxxxx>]

> On Thu, Nov 12, 2009 at 6:00 PM, James Harper
> <james.harper@xxxxxxxxxxxxxxxx> wrote:
> >>
> >> Is anyone working on live-migration support for Windows PV domains?
>  I
> >> am a developer, and I am evaluating the possibility of improving
> upon
> >> the Windows drivers.
> >>
> >> I installed a recent copy of the PV drivers (0.10.0.130) from the
> >> installation packages pointed at in the wiki
> >> (http://wiki.xensource.com/xenwiki/XenWindowsGplPv) and was not able
> > to
> >> get a Windows 2003 domain to properly restore after a migration.
> > There
> >> were numerous popup boxes on the console about not being able to
> > remove
> >> devices, etc.  I also found some verbiage in
> >> win-pvdrivers.hg/doc/TODO.txt (cloned from the repository) which
> >> indicated that this support wasn't completed (yet).  I am not quite
> > sure
> >> what my expectations should be.
> >>
> >> Is there any documentation for this code or a project-plan which I
> can
> >> consult?  I didn't find anything on the wiki that would help me
> answer
> >> my questions about what is or isn't supported and what is being
> > actively
> >> worked on (and by whom).
> >>
> >> Apologies in advance if I'm asking newbie questions that have
> already
> >> been asked and answered.  If you can point me to any useful threads
> on
> >> this subject, please do so.
> >>
> >
> > That particular problem should be fixed in 0.10.0.134. There may be
> > other bugs that stop it working but that one at least should be
> fixed.
> >
> 
> Charlie,
> 
> There are reports of recent gplpv drivers supporting live migration on
> old xen versions. Some changes in xen 3.4 broke gplpv live
> migration/restore functionality. There is a workaround but it has not
> been applied.
> 
> More info:
> http://lists.xensource.com/archives/html/xen-users/2009-
> 10/msg00978.html
> http://lists.xensource.com/archives/html/xen-devel/2009-
> 09/msg01095.html
> 
> 
> Keith Coleman

Keith, James,

Thank you very much for your responses.

James, I have been testing version 0.10.0.134 today with very good results.  
Clearly, whatever was causing my live-migration problems has been fixed.

Keith, thanks for cluing me in on those other discussions.  Sounds to me like 
there is some uncertainty about the expected behavior which is unresolved.  I 
will stay tuned to that.

Best wishes. -- Charlie

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