On 12/15/2010 11:00 AM, Michael S. Tsirkin wrote:
Indeed, subsections are for data that is rarely needed so that
there's some chance (sometimes ~100%) of migration working
seemlessly.
If a subsection arrives that qemu does
not know about, won't migratin fail?
Yes, that's why rarely needed => some high chance of migration working
(though no certainty).
In this case it's either
no-bump-and-live-with-the-consequences, or changing the version id.
This was discussed to death already. version ids have the problem
that they don't play nicely with downstreams.
Downstream version bumps don't play nicely with upstream, so downstream
does have a reason for always-necessary subsections. But upstream can
bump the version id as much as they care.
Paolo
