On 06/25/2014 04:28 AM, ChenLiang wrote:
> hi,all
> Qemu can not modify boot index when vm is running.

So? Boot index is used exactly once - when the domain is started. After
that, you aren't booting any more, so what benefit is there to changing
boot index on the fly?

> It is inconvenience when we install guest os. Is it
> necessary to achieve modify boot index online?

virt-install manages to install guests just fine without changing the
boot index on the fly; it manages to sequence multiple qemu runs with
different boot indices between runs.

> We can add one qmp interface to achieve it.

You're welcome to submit a patch if you think you have a use case; but I
personally don't see the current setup as limiting.

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