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[Launchpad Bug Tracker <2055239@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-advantage-tools - 34~20.04

---------------
ubuntu-advantage-tools (34~20.04) focal; urgency=medium

  * Backport 34 to focal (LP: #2075543)

ubuntu-advantage-tools (34) oracular; urgency=medium

  * d/rules: check that version.py is consistent with changelog (GH: #3154)
  * New upstream release 34: (LP: #2075543)
    - apt-hook: redirect errors away from users (LP: #2074211, LP: #2055239)
    - detach: ensure apt bearer tokens are always cleaned up
    - fips-preview: add warnings and prompts similar to fips and fips-updates
    - fips and realtime-kernel: add warning when the new kernel may have
      different hardware support than the current kernel based on the flavor
      (GH: #3115)
    - fix: use more reliable api query param when looking up CVE fixes
    - help:
      + change help output for base pro command
      + remove service descriptions from output (GH: #3126)
      + show help content when run without a subcommand
    - timer: recover from corrupted job status file (LP: #2078737)
    - update manpage

 -- Grant Orndorff <grant.orndorff@xxxxxxxxxxxxx>  Fri, 06 Sep 2024
19:58:21 -0400

** Changed in: ubuntu-advantage-tools (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2055239

Title:
  Warning: The unit file, source configuration file or drop-ins of {apt-
  news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
  to reload units.

Status in snapd:
  New
Status in systemd package in Ubuntu:
  Fix Released
Status in ubuntu-advantage-tools package in Ubuntu:
  Fix Released
Status in ubuntu-advantage-tools source package in Xenial:
  Fix Released
Status in ubuntu-advantage-tools source package in Bionic:
  Fix Released
Status in ubuntu-advantage-tools source package in Focal:
  Fix Released
Status in ubuntu-advantage-tools source package in Jammy:
  Fix Released
Status in systemd source package in Noble:
  Fix Released
Status in ubuntu-advantage-tools source package in Noble:
  Fix Released

Bug description:
  [Impact]

  systemd may incorrectly mark units as needing a daemon reload,
  therefore unnecessarily printing the warning that a daemon-reload is
  needed for the changes to take effect. This is misleading to users,
  and particularly visible in cases like running apt update, since there
  is an apt hook (/etc/apt/apt.conf.d/20apt-esm-hook.conf) that starts
  two systemd services.

  [Test Plan]

  This bug can be triggered by running systemctl enable/disable on a non-existent unit. After that, calling systemctl start/status/etc. will show a false warning
  that the unit changed on disk. Hence, to test, simply:

  $ systemctl enable somethingthatdefinitelydoesnotexist.service
  $ systemctl status systemd-resolved.service 
  $ apt update

  On an effected system, warnings will be shown when calling both
  commands after the "enable non-existent unit" step.

  [Where problems could occur]

  This patch fixes a previous commit by ensuring that the
  manager->unit_file_state_outdated flag is set *only* when some
  modifications succeeded, but the overall operation failed. In cases
  where everything fails, it is not necessary to set the flag.

  Since the patch is restricted to this area, any regressions from this
  patch would most likely also be related to the NeedDaemonReload
  property of units.

  [Other information]

  The patch is from upstream:
  https://github.com/systemd/systemd/pull/32610/commits/d69cba3bfffc7b1e3197e2a34b459db13b1e1cb7#diff-84bbf3361da4139a5620a035ebd24f50a0e4d4ece7952dc2d8b4325e6ebdf6e0L2320

  [Original Description]

  I recently started seeing the following warning messages when I run
  `apt update`.

  $ sudo apt update
  Warning: The unit file, source configuration file or drop-ins of apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
  Warning: The unit file, source configuration file or drop-ins of esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload units.
  ...

  apt-news.service for example is in /lib/systemd/system/apt-
  news.service and it's a static file managed by the package. Does the
  package maintenance script call systemd related hooks to reload the
  config whenever the package gets updated?

  $ systemctl cat apt-news.service
  # /usr/lib/systemd/system/apt-news.service
  # APT News is hosted at https://motd.ubuntu.com/aptnews.json and can include
  # timely information related to apt updates available to your system.
  ...

  $ dpkg -S /lib/systemd/system/apt-news.service
  ubuntu-pro-client: /lib/systemd/system/apt-news.service

  ProblemType: BugDistroRelease: Ubuntu 24.04
  Package: ubuntu-pro-client 31.1
  ProcVersionSignature: Ubuntu 6.6.0-14.14-generic 6.6.3
  Uname: Linux 6.6.0-14-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Feb 28 13:06:35 2024
  InstallationDate: Installed on 2024-01-08 (51 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240104)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>SourcePackage: ubuntu-advantage-tools
  UpgradeStatus: No upgrade log present (probably fresh install)
  apparmor_logs.txt:

  cloud-id.txt-error:
   Failed running command 'cloud-id' [exit(2)]. Message: REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg, insufficient permissions
  livepatch-status.txt-error: Invalid command specified '/snap/bin/canonical-livepatch status'.
  uaclient.conf:
   contract_url: https://contracts.canonical.com
   log_level: debug

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