[Spice-devel] concurrent SPICE access [was: Re: [Users] oVirt 3.5 planning]

Markus Stockhausen stockhausen at collogia.de
Wed Feb 26 00:09:50 PST 2014


> Von: Michal Skrivanek [mskrivan at redhat.com]
> Gesendet: Mittwoch, 26. Februar 2014 08:49
> An: spice-devel at lists.freedesktop.org
> Cc: Markus Stockhausen; Itamar Heim; Users at ovirt.org Users
> Betreff: concurrent SPICE access [was: Re: [Users] oVirt 3.5 planning]
> 
> On Feb 25, 2014, at 20:38 , Itamar Heim <iheim at redhat.com> wrote:
> 
> > On 02/25/2014 09:20 PM, Markus Stockhausen wrote:
> >> 3) Shared console access for two or more administrators
> >>
> >> https://bugzilla.redhat.com/show_bug.cgi?id=1060854
> >
> > michal - is this just a config in the .vv file? I'd expect qemu needs to support
> > this as well? especially since the ticketing mechanism is designed to disconnect previous user?
> 
> last time I remember the concurrent connection to SPICE was experimental
> Did it change since?
>
> yes, if it is supported now the oVirt ticketing would need to be changed or disabled
> 
> Thanks,
> michal

The request was created to allow a general shared access pattern (independent 
of the console type). In the SPICE case QEMU still spits the message "enable shared 
spice: ... crashy ..."  At the moment both console types lack shared sessions because of:

- VNC: Virt-Viewer opens the connection with exclusive access 
  (qemu token disconnect does not work at all)
- SPICE: Ovirt/libvirt do not instruct qemu to enable shared access & 
  token generation enforces disconnect

The idea behind it, is to have a check-button on the console settings page that
enables/disables shared access. At least vor VNC.

Markus

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