[Spice-devel] Multiple monitors for a windows virtual machine where each is to be displayed on a different client (for a windows 10 virtual machine)

[Pavel Grunt]

Hi,

On Tue, 2016-07-26 at 00:19 -0400, ptroy at jgh.mcgill.ca wrote:
> Hi!
> 
> I have a server (in my basement) running windows 10 as a virtual machine.  I
> would like the windows virtual machine to have 3 virtual displays (or at least
> 2)

That is not a problem, you just need to add more '-vga qxl -device qxl'
http://www.spice-space.org/spice-user-manual.html#_multiple_monitor_support

> , and I would like to display the frist virtual display on the monitor on the
> first machine in my office, the second virtual display on the monitor of the
> second machine in my office, and the third virtual display on the monitor of
> the third machine in my office. 

So 1 virtual machine & 3 clients - for that you would need to enable
"Simultaneous clients connection" which is an EXPERIMENTAL feature:
http://www.spice-space.org/multiple-clients.html

All the clients will receive the same stuff (all will get 3 displays, but you
can "hide" some windows).

> All three machines in my office are running Lubuntu and have spice-client-gtk
> on them (I am running Lubuntu 16.04 so spice-client-gtk contains spicy). 

You would need remote-viewer (it has multi-monitor support) for that. You can
find it in the virt-viewer package - the latest version is remote-viewer 4.0

>  I am using qemu-system-x86_64 to run the windows virtual machine, and I have
> two virtual displays working, but they are both displaying on the monitor of
> one of the machines in my office.  
> 
> Is there a way for me to tell (possibly by using different port numbers and
> spice options in the parameter list for qemu-system-x86_64) so that each
> virtual display is directed to a different physical machine?
> 
> I have listed my command line below (with an attempt to use two references to
> spice, which didn't work).

use just one

> 
> THANKS . . .
> 
> Phil
> 
> P.S.  I am also curious whether I am using image compression and video
> compression in a sensible manner.

Looks good, but you can experiment with it :)

Recent versions of spice-gtk and spice-server have support for changing image
compression from the client using '--spice-preferred-compression'

Regards,
Pavel

> 
> # Start qemu-system asynchronously
> qemu-system-x86_64 \
>   -enable-kvm \
>   -machine pc,accel=kvm \
>   -drive file=/mnt/Windows10Image/Windows10Guest.img,if=virtio \
>   -drive
> file=/home/troyware1/InstallFiles/Windows10H64/Windows10H64Install.iso,media=c
> drom \
>   -drive file=/home/troyware1/InstallFiles/Windows10H64/virtio-win-
> 0.1.118.iso,media=cdrom \
>   -net nic,model=virtio,macaddr=56:44:45:30:31:35 \
>   -net user \
>   -cpu host \
>   -vga qxl \
>   -spice port=5900,disable-ticketing,image-compression=glz,zlib-glz-wan-
> compression=always \
>   -device qxl \
>   -spice port=5951,disable-ticketing,jpeg-wan-compression=always,zlib-glz-wan-
> compression=always \
>   -uuid 8373c3d6-1e6c-f022-38e2-b94e6e14e170 \
>   -smp cpus=3,maxcpus=6 \
>   -m 8192 \
>   -name TroyWare1Win7VM \
>   -localtime \
>   -k en-us \
>   -usb -usbdevice tablet &
> 
> 
> Philip M. Troy, Ph.D.
> 
> Analytics Conseiller principal
> Centre intégré universitaire de santé et de services sociaux du Centre-Ouest-
> de-l’Île-de-Montréal
> Phil.Troy.CCOMTL at ssss.gouv.qc.ca
> 
> professeur adjoint de chirurgie
> Université McGill
> philip.troy at mcgill.ca
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