Snapshotting for rollback after updates was[ Re: Drawing lessons from fatal SELinux bug #1054350]
lists at colorremedies.com
Sun Jan 26 20:13:43 UTC 2014
On Jan 26, 2014, at 11:41 AM, Simo Sorce <simo at 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
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.
More information about the devel