Here is a recap of my day of work :
The unattended-upgrades.service unit never runs the ExecStop because it
is not enabled as we see here :
# systemctl status unattended-upgrades.service
● unattended-upgrades.service - Unattended Upgrades Shutdown
Loaded: loaded (/lib/systemd/system/unattended-upgrades.service; enabled;
vendor preset: enabled)
Active: inactive (dead) <<<<<<<<<<<<<<<
Docs: man:unattended-upgrade(8)
This is caused by a missing "Default-Start" header in /etc/init.d
/unattended-upgrades. Trying to enable the unit leads to :
# systemctl enable unattended-upgrades.service
Synchronizing state of unattended-upgrades.service with SysV init with
/lib/systemd/systemd-sysv-install...
Executing /lib/systemd/systemd-sysv-install enable unattended-upgrades
update-rc.d: error: unattended-upgrades Default-Start contains no runlevels,
aborting.
I'm currently working on fixing all this in the packaging so we get a
correctly working unit after the upgrade of the package.
I have also reworked the unit :
[Unit]
Description=Unattended Upgrades Shutdown
DefaultDependencies=no
After=network.target local-fs.target
RequiresMountsFor=/var/log /var/run
Documentation=man:unattended-upgrade(8)
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStop=/usr/share/unattended-upgrades/unattended-upgrade-shutdown
TimeoutStopSec=900
[Install]
WantedBy=multi-user.target
With this configuration, the unit runs the ExecStop as expected. I also
tested using Unattended-Upgrade::InstallOnShutdown "true" and it works
as expected, which is to block the shutdown for upgrade with the network
being available.
I should have that available for testing tomorrow.
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https://bugs.launchpad.net/bugs/1654600
Title:
unattended-upgrade-shutdown hangs when /var is a separate filesystem
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