Re: [Xen-devel] PATCH: 0/10: Merge xenfb & xenconsoled into qemu-dm

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 17/8/07 21:12, "Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote:

>> Thinking about this, I think I can easily re-work the last two patches so
>> that xenconsoled will continue to process the guest consoles, if-and-only-if
>> the guest doesn't have a QEMU instance already doing it. That would give us
>> choice between both deployment scenarios per-guest.
> 
> I've got this working ok - since both xenconsoled and qemu-dm are already
> reading the /local/domain/<id>/console/ path in xenstore, I simply added
> an extra field 'use-device-model' which can be 1 or 0. If XenD sees that
> a PV domain has a device model then it sets it to 1, causing xenconsoled
> to ignore that guest. I'll post patches to this effect over the weekend

Sounds basically good, but a field called 'type' in the backend xenstore
directory would be more flexible and more consistent with other backend
directory contents (at least netback's). We could use values 'ioemu' and
'xenconsoled', and absence of the field implies xenconsoled. Both ioemu and
xenconsoled should check the field.

 -- Keir



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