/usrmove? -> about the future

[Adam Williamson]

On Fri, 2012-02-10 at 19:05 +0000, Matthew Garrett wrote:
> On Fri, Feb 10, 2012 at 07:56:28PM +0100, Reindl Harald wrote:
> 
> > and Preupgrade is guaranteed to work?
> > laughable!
> 
> Not guaranteed, but it works within a massively more constrained 
> environment and so certain fundamental issues don't apply. yum 
> distro-sync requires that all currently running applications are able to 
> deal with their files being replaced. Preupgrade doesn't. That's a 
> pretty obvious distinction, and it's why preupgrade is supportable in a 
> way that yum isn't.

Perhaps even more importantly, preupgrade requires a run of anaconda,
which allows certain things to be done which simply cannot be done
within the constraints of yum/rpm: like a bootloader upgrade, or
the /usr move preparation steps.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net