On 02/09/2012 10:31 AM, Hans de Goede wrote:
Hi,
On 02/09/2012 08:55 AM, Itamar Heim wrote:
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?
We could ask the user, but I don't think that that is a good idea.
this will cause their (single) head to spin...
With which you seem to agree :)
any better UX we can suggest users?
Yes, no UI at all, the current solution using multiple single monitor
pci cards means using Xinerama, which disables Xrandr, and thus allows
no dynamic adjustment of the monitor settings of the guest, instead
an xorg.conf file must be written (the linux agent can generate one
based on the current client monitor info) and Xorg needs to be restarted.
This is the result of the multiple pci cards which each 1 monitor model
we've been using for windows guests being a poor match for Linux guests.
So we are working on adding support to drive multiple monitors from a
single qxl pci device. This requires changes on both the host and
guest side, but if both sides support it this configuration is much
better, so IMHO ovirt should just automatically enable it
if both the host (the cluster) and the guest support it.
On the guest side, this is the current status:
RHEL <= 6.1 no multi monitor support
RHEL 6.2(*) - 6.? multi monitor support using Xinerama (so 1
monitor/card, multiple cards)
RHEL >= 6.? multi monitor support using a single card with multiple outputs
Just like when exactly the new multi mon support will be available
for guests, it is a similar question mark for when it will be available for
the host.
this is the ovirt mailing list, so upstream versions are more relevant here.
in any case, I have the same issue with backward compatibilty.
say you fix this in fedora 17.
user started a guest VM when host was fedora 16.
admin upgraded host and changed cluster level to utilize new features.
suddenly on next boot guest will move from 4 heads to single head? I'm
guessing it will break user configuration.
i.e., user should be able to choose to move to utilize the new mode?
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