The verification of the Stable Release Update for update-manager has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1624644 Title: By default settings unattended-upgrade does not automatically remove packages that become unused in conjunction with updating by other software Status in apt package in Ubuntu: Confirmed Status in gnome-software package in Ubuntu: Invalid Status in unattended-upgrades package in Ubuntu: Fix Released Status in update-manager package in Ubuntu: Fix Released Status in update-manager source package in Xenial: Fix Released Status in apt source package in Artful: Confirmed Status in gnome-software source package in Artful: Invalid Status in unattended-upgrades source package in Artful: In Progress Status in update-manager source package in Artful: Fix Released Bug description: [Impact] * Update-manager and unattended-upgrades install many kernel packages during the lifetime of a release but does not remove them automatically leading to those packages filling disk space potentially completely filling /boot and making the system unable to install updates or even boot. * Stable release users are impacted by this bug for years and their systems already collected many autoremovable unused kernel packages, thus they would benefit from backporting the fix greatly. * The bug is fixed by removing autoremovable (not currently booted) kernel packages when running unattended-upgrades or update-manager. Update manager offers the kernel removals when there are other updates to be installed. [Test Case] 1. Install kernel packages to be removed, mark them auto-installed and run apt's kernel hook script to make apt consider them autoremovable: sudo apt install -y linux-image-extra-4.4.0-92-generic linux-image-extra-4.4.0-93-generic sudo apt-mark auto linux-image-extra-4.4.0-92-generic linux-image-extra-4.4.0-93-generic sudo /etc/kernel/postinst.d/apt-auto-removal 2. Also downgrade a package to be upgraded: sudo apt-get install -y --allow-downgrades ca- certificates=20160104ubuntu1 3. (update-manager). Run update-manager and observe that kernel packages are offered for removal in Details of updates. sudo update-manager 4. (update-manager) Click on Install Now and observe that the kernel packages are removed. 3. (unattended-upgrades, the fix comes in an update of u-u) Run unattended-upgrades manually and observe the removal of the autoremovable kernel packages: sudo unattended-upgrade -v [Regression Potential] The change may cause update-manager or unattanded-upgrades to remove used kernel packages or fail to install other package updates. [Other Info] The unattended-upgrades fix is uploaded with many other fixes and those may cause regressions in other areas in unattended-upgrades. [Original bug text] When using default settings for unattended-upgrade i.e. Unattended-Upgrade::Remove-Unused-Dependencies "false"; # default "false" Unattended-Upgrade::Remove-New-Unused-Dependencies "true"; # default "true" in configuration file /etc/apt/apt.conf.d/50unattended-upgrades, unattended-upgrade is unable to remove packages that become unused in conjunction with updating by other software such as update-manager or apt full-upgrade. This is because unattended-upgrade compares the list of unneeded packages before and after it upgrades packages to detect which packages are new unused ones. Consequently, if user installs new kernels using e.g. update-manager, the excessive kernels will not be removed by unattended-upgrade, and eventually (small) /boot will become full. Expected behavior: handle removing of unused packages differently at least until other package management software installed by default can handle removing of new unused packages. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: unattended-upgrades 0.90 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic i686 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: i386 CurrentDesktop: XFCE Date: Sat Sep 17 11:28:44 2016 InstallationDate: Installed on 2016-09-05 (11 days ago) InstallationMedia: Mythbuntu 16.04.1 LTS "Xenial Xerus" - Release i386 (20160719) PackageArchitecture: all SourcePackage: unattended-upgrades UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1624644/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
