On Jan 26, 2014, at 11:41 AM, Simo Sorce <simo(a)redhat.com> wrote:
I never said it won't work in absolute, it probably will work ok
in many
cases, just to cause incredible issues in others.
It is a fine tool in the hands of an expert that knows how to check
whether reverting to a snapshot is safe.
Why is the snapshot case any different from a user who reverts doing a clean install or
yum downgrade?
It is not going to be a good solution for non-expert users though
*unless* you provide system APIs that *all* applications use to signal
when they are doing irreversible changes so that the user can be warned
about potential data loss right when he asks the system to revert a
snapshot.
Developers should not be sneak attacking non-expert users with file format changes that
aren't well announced in advance of consequences they probably won't be able to
read their data if they downgrade the application.
Chris Murphy