Changelog
unattended-upgrades (1.1ubuntu1.18.04.7) bionic; urgency=medium
* Trigger unattended-upgrade-shutdown actions with PrepareForShutdown()
Performing upgrades in service's ExecStop did not work when the upgrades
involved restarting services because systemd blocked other stop/start
actions making maintainer scripts time out and be killed leaving a broken
system behind.
Running unattended-upgrades.service before shutdown.target as a oneshot
service made it run after unmounting filesystems and scheduling services
properly on shutdown is a complex problem and adding more services to the
mix make it even more fragile.
The solution of monitoring PrepareForShutdown() signal from DBus
allows Unattended Upgrade to run _before_ the jobs related to shutdown are
queued thus package upgrades can safely restart services without
risking causing deadlocks or breaking part of the shutdown actions.
Also ask running unattended-upgrades to stop when shutdown starts even in
InstallOnShutdown mode and refactor most of unattended-upgrade-shutdown to
UnattendedUpgradesShutdown class. (LP: #1778219)
* Increase logind's InhibitDelayMaxSec to 30s. (LP: #1778219)
This allows more time for unattended-upgrades to shut down gracefully
or even install a few packages in InstallOnShutdown mode, but is still a
big step back from the 30 minutes allowed for InstallOnShutdown previously.
Users enabling InstallOnShutdown node are advised to increase
InhibitDelayMaxSec even further possibly to 30 minutes.
- Add NEWS entry about increasing InhibitDelayMaxSec and InstallOnShutdown
changes
* Ignore "W503 line break before binary operator"
because it will become the best practice and breaks the build
* Stop using ActionGroups, they interfere with apt.Cache.clear()
causing all autoremovable packages to be handled as newly autoremovable
ones and be removed by default. Dropping ActionGroup usage does not slow
down the most frequent case of not having anything to upgrade and when
there are packages to upgrade the gain is small compared to the actual
package installation.
Also collect autoremovable packages before adjusting candidates because that
also changed .is_auto_removable attribute of some of them. (LP: #1803749)
(Closes: #910874)
-- Balint Reczey <email address hidden> Mon, 26 Nov 2018 13:37:47 +0100
