Re: AW: Windows DomU: Network Issues

[David Hill <davehill@xxxxxxxxx>]

On 2021-05-10 1:55 p.m., Paul Leiber wrote:
> > Von: Xen-users<xen-users-bounces@xxxxxxxxxxxxxxxxxxxx>  Im Auftrag von
> > Paul Leiber
> > Gesendet: Donnerstag, 6. Mai 2021 21:47
> >
> > Also, there was a persistent error on
> > Windows Update so I couldn't install any updates.
> Solution: This issue was totally unrelated to Xen, it is a Windows Update 
> issue. I needed to manually download and install update KB2937636 
> (https://www.microsoft.com/de-DE/download/details.aspx?id=43434).
>   
> > Further observations from Windows 10 device manager on the domU:
> > - There is one device without a driver (yellow triangle), the device is called
> > XSC000 XENVIF 0
> > - The system devices XenServer PV Interface, XenServer PV Bus (twice), and
> > XenServer PV Network Class seem to be installed correctly
> > - The NIC installed is shown as Realtek RTL8139C+ Fast Ethernet NIC
> Solution: It turned out that I had to manually install the drivers for the 
> unknown devices, (in device manager, select to install driver from disk, then 
> select one of the pv drivers). In this way, I got both Windows Server 2012 and 
> Windows 10 working. I had to use trial and error to find the correct setup, but 
> most stuff seems to work fine. The network speed is more than sufficient. I 
> didn't even need to disable checksum offloading.
>
> The PCI passthrough device seems to get lest in the domU, but that seems to be 
> a different matter (IRQ conflict?) which I will try to follow up in the next 
> steps.
>
> Thanks everybody,
>
> Paul
Glad to hear you got it sorted.

The Beginner's Guide could use an update in spots. If you noticed 
anything in particular I'd appreciate hearing about it. I did some 
editing on the page last year and planned to make a few more 
improvements but got caught up in other things.  At a quick glance, I 
can see some things could be fixed up, like what the windows.cfg file 
should look like once Windows has completed installation.
I'm no xen-pert but a couple of things in your cfg file made me wonder a 
bit. Is it a combination of two files or is half of it meant to be 
commented out? For example you have repeats of "boot=" and 
"device_model_version = " and I'm pretty sure you don't need/want the 
"kernel=" line once installation is complete.
I also suggest you have a look at SPICE (see 
https://wiki.xenproject.org/wiki/SPICE_support_in_Xen and 
www.spice-space.org) and consider using it in place of vnc. At least on 
my system, it does a better job of mouse handling, USB passthrough and 
video performance generally.
David