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Von: users-bounces(a)ovirt.org [users-bounces(a)ovirt.org]" im
Auftrag v=
on "Itamar Heim [iheim(a)redhat.com]=0A=
Gesendet: Donnerstag, 27. Februar 2014 09:53=0A=
An: Sven Kieske; users(a)ovirt.org=0A=
Betreff: Re: [Users] concurrent SPICE access [was: Re: oVirt 3.5 plannin=
g]=0A=
=0A=
On 02/27/2014 10:52 AM, Itamar Heim wrote:=0A=
> On 02/27/2014 10:51 AM, Sven Kieske wrote:=0A=
>> Well, you generate a separate ticket to the same vm.=0A=
>> resulting in another vnc-session to the server, but the input/output=
=0A=
>> is shared, you can see in real time when the other user
types etc.=0A=
>=0A=
> iirc, the ticketing mechanism works in a way that a new ticket=0A=
> disconnects the previous session?=0A=
=0A=
(on connection with the new ticket)=0A=
=0A=
In the VNC case this does not work. I do not know if its by design or=0A=
just a bug/feature. Either Ovirt does not instruct libvirt to create a new=
=0A=
VNC ticket with option "disconnect all connected clients" or this =0A=
information is not correctly interpreted by qemu.=0A=
=0A=
If you launch a client that initiates a shared connection to the console =
=0A=
then existing connections will stay open. This magically works if you=0A=
use the novnc client (as Sven explained).=0A=
=0A=
The only thing that prevents a concurrent access to the console with=0A=
virt-viewer is the fact that it enforces a single VNC connection.=0A=
=0A=
So state is as follows:=0A=
=0A=
SPICE: disconnect happens during ticket creation=0A=
VNC: disconnect may happen during client connection=0A=
=0A=
You can check that behaviour if you associate a .VV file with a text editor=
. =0A=
With SPICE the existing console connection is terminated just before the=0A=
.VV file opens in the editor. With VNC the existing session stays open.=0A=
=0A=
Markus=
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