[Bug 1820886] Re: Potential inconsistency due to system halt/reboot being allowed when package installation in progress

[João Pedro Seara]

** No longer affects: landscape-client

** Description changed:

  [System]
  Any current Ubuntu Desktop/Server supported release (Trusty, Xenial, Bionic, Cosmic).
  
  [Impact]
  Package installation turns into an inconsistent state if system is rebooted in the middle of an apt install/upgrade.
  
  [Test Case]
  Scenario with Landscape:
  1. Upgrade triggered from Landscape
  2. User at Ubuntu Desktop reboots the box using the GUI
  3. System reboots and potentially turns into an inconsistent state
  
  Scenario w/o Landscape:
  1. User1 at Ubuntu Server issues "sudo apt-get upgrade"
  2. User2 at Ubuntu Server issues "shutdown -r"
  3. System reboots and potentially turns into an inconsistent state
  
  [Remarks]
  APT should automatically inhibit system halts/reboots while packages being installed/removed. A similar behavior to what is shown by unattended-upgrades.
- 
- As a Plan B, an Ubuntu Server/Desktop with the Landscape Client
- installed, should at least display warning the users that packages are
- being installed.

** Description changed:

  [System]
  Any current Ubuntu Desktop/Server supported release (Trusty, Xenial, Bionic, Cosmic).
  
  [Impact]
  Package installation turns into an inconsistent state if system is rebooted in the middle of an apt install/upgrade.
  
  [Test Case]
- Scenario with Landscape:
- 1. Upgrade triggered from Landscape
- 2. User at Ubuntu Desktop reboots the box using the GUI
- 3. System reboots and potentially turns into an inconsistent state
- 
- Scenario w/o Landscape:
- 1. User1 at Ubuntu Server issues "sudo apt-get upgrade"
- 2. User2 at Ubuntu Server issues "shutdown -r"
- 3. System reboots and potentially turns into an inconsistent state
+ 1. User1 at Ubuntu box issues "sudo apt-get upgrade";
+ 2. User2 at Ubuntu box issues "shutdown -r" or reboots it using the GUI;
+ 3. System reboots and potentially turns into an inconsistent state.
  
  [Remarks]
  APT should automatically inhibit system halts/reboots while packages being installed/removed. A similar behavior to what is shown by unattended-upgrades.

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https://bugs.launchpad.net/bugs/1820886

Title:
  Potential inconsistency due to system halt/reboot being allowed when
  package installation in progress

Status in apt package in Ubuntu:
  New

Bug description:
  [System]
  Any current Ubuntu Desktop/Server supported release (Trusty, Xenial, Bionic, Cosmic).

  [Impact]
  Package installation turns into an inconsistent state if system is rebooted in the middle of an apt install/upgrade.

  [Test Case]
  1. User1 at Ubuntu box issues "sudo apt-get upgrade";
  2. User2 at Ubuntu box issues "shutdown -r" or reboots it using the GUI;
  3. System reboots and potentially turns into an inconsistent state.

  [Remarks]
  APT should automatically inhibit system halts/reboots while packages being installed/removed. A similar behavior to what is shown by unattended-upgrades.

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