[Bug 1690980] Re: unattended-upgrades does not block shutdown of system, as it is designed to

[Balint Reczey]

@Julian: When running u-u at shutdown the expectation is that it runs to
completion including the downloads (started by u-u-s).

When running in periodic mode triggered by apt's timer it finishes the
transaction on TERM signal then it exits to let the shutdown continue.
In this case you are right it does not perform the download and
installation steps in the same service. In apt-daily-upgrade's case the
900 second is probably future-proof unless the machine/disk is very
slow.

There are still installer packages which need downloads even during
installation, but they are not updated very often.

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https://bugs.launchpad.net/bugs/1690980

Title:
  unattended-upgrades does not block shutdown of system, as it is
  designed to

Status in OEM Priority Project:
  Triaged
Status in OEM Priority Project xenial series:
  New
Status in apt package in Ubuntu:
  Fix Committed
Status in unattended-upgrades package in Ubuntu:
  Fix Committed

Bug description:
  Title: No pop-up window to warn users that system should not reboot or
  shutdown while installing security updates

  Summary:
  No pop-up window to warn users that system should not reboot or shutdown while installing security updates

  Steps:
  1. trigger unattended-upgrades
  2. reboot or shutdown system while installing packages

  Expected results: There is a pop-up window to warn users that system
  should not reboot or shutdown

  Actual results: There is no pop-up window to warn users

  Additional information:
  $ apt-cache policy unattended-upgrades
  unattended-upgrades:
    Installed: 0.90
    Candidate: 0.90ubuntu0.5
  $ lsb_release -rd
  Description:    Ubuntu 16.04 LTS

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