[Engine-devel] [Spice-devel] SPICE related features

[Itamar Heim]

On 02/08/2012 04:36 PM, Hans de Goede wrote:
> Hi all,
>
> Dor, thanks for the forward.
>
> On 02/08/2012 12:49 PM, Dor Laor wrote:
>> On 02/08/2012 01:43 PM, Oved Ourfalli wrote:
>>> Hello all,
>>>
>>> The following feature page describes the engine adjustments needed
>>> for new SPICE features.
>>>
>>> http://www.ovirt.org/wiki/Features/SPICERelatedFeatures
>
> Al in all this looks good, some remarks:
>
> * WRT multi monitor support for RHEL, the latest RHEL xorg-x11-drv-qxl and
> spice-vdagent packages do support multi monitor support using multiple
> cards in Xinerama mode. We are waiting for a RHEL-6 z-stream update to
> fix an x11-xorg-server-Xorg bug which atm makes the mouse unusable in this
> mode wants this lands, multi-monitor support this way should be available
> for RHEL-6.2 (and later) guests. The same holds true for Fedora guests,
> although I don't expect the necessary Xorg changes to be available for
> versions older then Fedora 17. The driving multiple monitors from a single
> qxl device support OTOH is still a long time away, likely 6 months or so.

so this means we need to ask the user for linux guests if they want 
single head or multiple heads when they choose multi monitor?
this will cause their (single) head to spin...
any better UX we can suggest users?

>
> * WRT the native USB support, the wiki page says:
> "If the cluster level is 3.1 (which supports native USB support), but the
> client only has non-native USB support (old client), then we will use the
> old client. This means that we'll have to keep supporting the non-native
> USB
> support, side-by-side with the native one."
>
> Note that the new usb-support requires starting the guest with a number of
> extra emulated devices. These will just sit around and do nothing if
> unused,
> so I don't really expect any issues with this, but this still is something
> to be aware of. OTOH the old usb-support requires the installation of extra
> software inside the guest, if this is not installed falling back to the old
> client will not help wrt usb support.

true, I think we need to offer at least a single version that offers 
backward compatibility before we can deprecate it.