Re: [Qemu-devel] [PATCH 01/12] migration: Introduce announce parameters

[Jason Wang]

On 2017年05月31日 02:57, Dr. David Alan Gilbert wrote:
> * Vlad Yasevich (address@hidden) wrote:
> > On 05/26/2017 12:03 AM, Jason Wang wrote:
> > > On 2017年05月25日 02:05, Vladislav Yasevich wrote:
> > > > Add parameters that control RARP/GARP announcement timeouts.
> > > > The parameters structure is added to the QAPI and a qmp command
> > > > is added to set/get the parameter data.
> > > >
> > > > Based on work by "Dr. David Alan Gilbert"<address@hidden>
> > > >
> > > > Signed-off-by: Vladislav Yasevich<address@hidden>
> > > I think it's better to explain e.g under which condition do we need to tweak 
> > > such parameters.
> > >
> > > Thanks
> > OK.  I'll rip off what dgilbert wrote in his original series for the 
> > description.
> >
> > Dave, if you have any text to add as to why migration might need to tweak this, 
> > I'd
> > appreciate it.
> Pretty much what I originally said;  that the existing values
> are arbitrary and fixed, and for systems with complex/sluggish
> network reconfiguration systems they can be too slow.
>
> Dave

I agree, but I'm not sure how much it can help in fact unless management 
can set configuration specific parameters. And what we did here is best 
effort, there's no guarantee that G(R)ARP packet can reach the destination.

Thanks