[libvirt] Should we keep the original vnc behavior even if the underlying qemu changes?

[Eric Blake]

On 05/01/2013 08:43 AM, Guan Nan Ren wrote:
>         Since qemu v1.1.0 upstream commit 8cf364, qemu implemented shared-flag handling
>         the default qemu vnc server behavior from mode 'ignore' to 'allow-exclusive'.
>         The direct effect is as follows for libvirt user:
>         vncviwer client:
>           before: all client could share desktop without any option
>           after: all client need -Shared options for desktop sharing. One client without
>                  -Shared option breaks others's connection
>         virt-viewer:
>           before: virt-viewer could support multiple desktop sharing
>           after: only one active connection
> 
>         If we need to keep the original vnc behavior at libvirt level, the '-vnc :1,share=ignore'
>         need to add into qemu commandline.
> 
>         Any ideas about this?

It sounds like we need an XML attribute, with several states (exclusive,
allow-share, force-share, ignore), and then specify that omitting the
attribute allows the hypervisor to pick its own default.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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