fedup for F23 and beyond

[Petr Hracek]

On 05/28/2015 05:42 PM, Will Woods wrote:
> [tl;dr: fedup is going away and should be re-implemented by the system
> packaging tools.]
>
> Hey all,
>
> F22 is the fifth release we've handled with fedup. A lot has changed
> since F17, and we've learned some valuable lessons about how upgrades
> work (and how they fail).
>
> We've come to the conclusion that the current design is unsupportable,
> mostly due to upgrade.img, which turns out to cause more problems than
> it solves[1].
>
> So! For F23, fedup needs to be redesigned. Here's how it should work:
Please have a look on Feature proposed in Fedora 19.
https://fedoraproject.org/wiki/Features/FedoraUpgrade
It should be redesigned maybe. Package already exists in Fedora.

What do you think about it?
>
> 1) Download packages for the new system
> 2) Use the systemd Offline Updates[2] facility to install packages
>
> This is really simple - simple enough that it should probably be
> provided by the system packaging tools themselves.
>
> As a proof-of-concept, I've implemented it as a DNF plugin, which you
> can see here[3]: https://github.com/wgwoods/dnf-plugin-fedup
>
> This behavior could also be implemented by PackageKit, which would make
> it easy to write a proper GUI.
GUI for upgrade is missing in Fedora at all.
>
> So that's the plan: drop upgrade.img, move upgrade support into the
> system packaging tools. Sometimes simpler is better.
>
> -w
>
> [1] For example, here are three F22 release-blockers, all caused by
> upgrade.img:
>    https://bugzilla.redhat.com/show_bug.cgi?id=1185604
>    https://bugzilla.redhat.com/show_bug.cgi?id=1209941
>    https://bugzilla.redhat.com/show_bug.cgi?id=1207251
> That first one is a nasty crash inside systemd, which led to a
> mailing-list discussion[1a] where Lennart concludes that the
> double-switchroot thing we're doing with upgrade.img is just not
> supportable[1b]. And I totally agree.
> [1a] http://lists.freedesktop.org/archives/systemd-devel/2015-March/029030.html
> [1b] http://lists.freedesktop.org/archives/systemd-devel/2015-April/031013.html
> [2] http://www.freedesktop.org/wiki/Software/systemd/SystemUpdates/
> [3] It works just fine in F21, if you're feeling brave..
>


-- 
Petr Hracek
Software Engineer
Developer Experience
Red Hat, Inc
Mob: +420777056169
email: phracek at redhat.com