Re: [Xen-devel] [PATCH v5 COLOPre 08/18] tools/libxl: introduce libxl__domain_restore_device_model to load qemu state

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Jan 26, 2016 at 02:17:08PM +0800, Wen Congyang wrote:
> On 01/26/2016 02:41 AM, Konrad Rzeszutek Wilk wrote:
> > On Thu, Dec 17, 2015 at 03:48:12PM +0800, Wen Congyang wrote:
> >> From: Yang Hongyang <hongyang.yang@xxxxxxxxxxxx>
> >>
> >> In normal migration, the qemu state was passed to qemu as a parameter.
> > 
> > /was/is/
> > 
> >> With COLO, Secondary vm is running. So we will do the following steps
> >> at every checkpoint:
> >> 1. suspend both primary vm and secondary vm
> >> 2. sync the state
> >> 3. resume both primary vm and secondary vm
> >> Primary will send qemu's state in step2, and
> >> Secondary's qemu should read it and restore the state before it
> > 
> > s/Secondary/secondary/
> >> is resumed. We can not pass the state to qemu as a parameter because
> >> Secondary QEMU already started at this point, so we introduce
> > 
> > s/Secondary/secondary/
> >> libxl__domain_restore_device_model() to do it.
> >> This API should be called before resuming secondary vm.
> > 
> > s/before/MUST/
> 
> s/should/MUST/?

<sigh> Yes. Thank you!

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel