This bug was fixed in the package apt - 1.7.5
---------------
apt (1.7.5) cosmic; urgency=medium
* Add test case for local-only packages pinned to never
* Prevent shutdown while running dpkg (LP: #1820886)
* Add linux-{buildinfo,image-unsigned,source} versioned kernel pkgs
(LP: #1821640)
-- Julian Andres Klode <juli...@ubuntu.com> Tue, 07 May 2019 11:04:15
+0200
** Changed in: apt (Ubuntu Cosmic)
Status: Fix Committed => Fix Released
** Changed in: apt (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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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:
Fix Released
Status in apt source package in Xenial:
Fix Released
Status in apt source package in Bionic:
Fix Released
Status in apt source package in Cosmic:
Fix Released
Status in apt source package in Disco:
Fix Released
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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