[Qemu-devel] Re: [PATCH 11/11] QMP: Command-line flag to enable control mode

[Avi Kivity]

On 06/23/2009 01:11 PM, Jan Kiszka wrote:
> > If we support multiple monitors, it might be desirable to allow the
> > app owning the main 'control' monitor channel to be able to indicate
> > that additional monitor channels are read-only. eg, so libvirt could
> > allow the user to connect to the monitor to run 'info' commands for
> > debug support without risk of having state changed behind its back
> >      
>
> Couldn't libvirt deal with update given we provide them as events?
> Otherwise, your suggestion makes sense, definitely as long as it would
> wreck libvirt's internal house keeping or for commands that are not
> synchronizable.
>    

It would be a nightmare, consider both libvirt and a user hotplugging 
something into the same pci slot, or a user starting migration, or 
quitting, or ...

Having -monitor readonly makes sense.

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