Re: [Xen-devel] RE: Maturity of Xen PV drivers?

[Jérôme Petazzoni <jp@xxxxxxxx>]

> > Hi James,
> >   Do you know any company has used Xen PV drivers for Windows in their
> > production?  Or Is there any limitation for those drivers (list of know
> >  issues etc.)
> >     
> I haven't had any issues in quite a while (12 months, various versions),
> and I use them in production (the machines are well backed up of course.
> In fact the only problems I have had under windows was when _not_ using
> PV drivers - a Xen/Dom0 crash left one of my windows domains corrupt
> because of the way Dom0 caches disk writes in the qemu drivers.
>   
Same thing here - we have a Xen host (64 bits) running a couple of 
Windows 2003 VMs.
Without the GPL PV drivers, heavy I/O caused almost-reproducible crashes 
(for instance, downloading a large file thru CIFS hung the Windows VM).
With the GPL PV drivers, I/O is of course *a lot* faster and no crash 
has been seen yet.
HTH,

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