Comment 0 for bug 1803391

Installation of latest systemd update in -security hangs with current versions of unattended-upgrades in supported releases. The u-u-side fix is tracked in LP: #1778219.

Reproduction:

rbalint@yogi:~$ lxc launch ubuntu:18.04 uu-systemd-onshutdown
Creating uu-systemd-onshutdown
Starting uu-systemd-onshutdown
rbalint@yogi:~$ lxc shell uu-systemd-onshutdown
mesg: ttyname failed: No such device
root@uu-systemd-onshutdown:~# apt update -qq
23 packages can be upgraded. Run 'apt list --upgradable' to see them.
root@uu-systemd-onshutdown:~# echo 'Unattended-Upgrade::InstallOnShutdown "true";' > /etc/apt/apt.conf.d/51unattended-upgrades-on-shutdown
root@uu-systemd-onshutdown:~# apt list --upgradable
Listing... Done
apport/bionic-updates 2.20.9-0ubuntu7.5 all [upgradable from: 2.20.9-0ubuntu7.4]
gettext-base/bionic-updates,bionic-security 0.19.8.1-6ubuntu0.1 amd64 [upgradable from: 0.19.8.1-6]
kmod/bionic-updates 24-1ubuntu3.1 amd64 [upgradable from: 24-1ubuntu3]
libglib2.0-0/bionic-updates 2.56.3-0ubuntu0.18.04.1 amd64 [upgradable from: 2.56.2-0ubuntu0.18.04.2]
libglib2.0-data/bionic-updates 2.56.3-0ubuntu0.18.04.1 all [upgradable from: 2.56.2-0ubuntu0.18.04.2]
libkmod2/bionic-updates 24-1ubuntu3.1 amd64 [upgradable from: 24-1ubuntu3]
libmspack0/bionic-updates,bionic-security 0.6-3ubuntu0.2 amd64 [upgradable from: 0.6-3ubuntu0.1]
libnss-systemd/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
libpam-systemd/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
libsystemd0/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
libudev1/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
lxd/bionic-updates 3.0.2-0ubuntu1~18.04.1 amd64 [upgradable from: 3.0.1-0ubuntu1~18.04.1]
lxd-client/bionic-updates 3.0.2-0ubuntu1~18.04.1 amd64 [upgradable from: 3.0.1-0ubuntu1~18.04.1]
openssh-client/bionic-updates,bionic-security 1:7.6p1-4ubuntu0.1 amd64 [upgradable from: 1:7.6p1-4]
openssh-server/bionic-updates,bionic-security 1:7.6p1-4ubuntu0.1 amd64 [upgradable from: 1:7.6p1-4]
openssh-sftp-server/bionic-updates,bionic-security 1:7.6p1-4ubuntu0.1 amd64 [upgradable from: 1:7.6p1-4]
python3-apport/bionic-updates 2.20.9-0ubuntu7.5 all [upgradable from: 2.20.9-0ubuntu7.4]
python3-distupgrade/bionic-updates 1:18.04.28 all [upgradable from: 1:18.04.27]
python3-problem-report/bionic-updates 2.20.9-0ubuntu7.5 all [upgradable from: 2.20.9-0ubuntu7.4]
systemd/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
systemd-sysv/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
ubuntu-release-upgrader-core/bionic-updates 1:18.04.28 all [upgradable from: 1:18.04.27]
udev/bionic-updates,bionic-security 237-3ubuntu10.6 amd64 [upgradable from: 237-3ubuntu10.3]
root@uu-systemd-onshutdown:~# reboot

Session terminated, terminating shell...Terminated
root@uu-systemd-
rbalint@yogi:~$
rbalint@yogi:~$ lxc shell uu-systemd-onshutdown
mesg: ttyname failed: No such device
root@uu-systemd-onshutdown:~# tail /var/log/unattended-upgrades/unattended-upgrades-dpkg.log
Preparing to unpack .../libsystemd0_237-3ubuntu10.6_amd64.deb ...
Unpacking libsystemd0:amd64 (237-3ubuntu10.6) over (237-3ubuntu10.3) ...
Setting up libsystemd0:amd64 (237-3ubuntu10.6) ...
Processing triggers for ureadahead (0.100.0-20) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Setting up systemd (237-3ubuntu10.6) ...
Failed to try-restart systemd-networkd.service: Transaction is destructive.
See system logs and 'systemctl status systemd-networkd.service' for details.
Failed to try-restart systemd-resolved.service: Transaction is destructive.
See system logs and 'systemctl status systemd-resolved.service' for details.
root@uu-systemd-onshutdown:~# ps -ef | cat
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 15:34 ? 00:00:00 /lib/systemd/systemd --system --deserialize 22
root 53 1 0 15:34 ? 00:00:00 /lib/systemd/systemd-journald
systemd+ 153 1 0 15:34 ? 00:00:00 /lib/systemd/systemd-networkd
systemd+ 154 1 0 15:34 ? 00:00:00 /lib/systemd/systemd-resolved
message+ 194 1 0 15:34 ? 00:00:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
root 572 1 0 15:35 ? 00:00:00 /usr/bin/python3 /usr/share/unattended-upgrades/unattended-upgrade-shutdown
root 586 572 0 15:35 ? 00:00:08 /usr/bin/python3 /usr/bin/unattended-upgrade
root 829 0 0 15:35 ? 00:00:00 su -l
root 830 829 0 15:35 ? 00:00:00 -su
root 1244 1 0 15:35 ? 00:00:00 /lib/systemd/systemd-udevd
root 1918 1 0 15:35 ? 00:00:00 /usr/sbin/sshd -D
root 1952 586 0 15:35 ? 00:00:00 /usr/bin/python3 /usr/bin/unattended-upgrade
root 2111 1952 0 15:35 pts/0 00:00:00 /usr/bin/dpkg --status-fd 10 --configure --pending
root 2125 2111 0 15:35 pts/0 00:00:00 /bin/sh /var/lib/dpkg/info/systemd.postinst configure 237-3ubuntu10.3
root 2165 2125 0 15:35 pts/0 00:00:00 systemctl try-restart systemd-journald.service
root 2170 0 0 15:36 ? 00:00:00 su -l
root 2171 2170 0 15:36 ? 00:00:00 -su
root 2197 2171 0 15:36 ? 00:00:00 ps -ef
root 2198 2171 0 15:36 ? 00:00:00 cat
root@uu-systemd-onshutdown:~# systemctl list-jobs
JOB UNIT TYPE STATE
323 reboot.target start waiting
405 basic.target stop waiting
359 sysinit.target stop waiting
433 cloud-init.service stop waiting
422 user.slice stop waiting
388 snapd.socket stop waiting
428 swap.target stop waiting
332 shutdown.target start waiting
412 slices.target stop waiting
415 systemd-networkd.service stop waiting
338 syslog.socket stop waiting
399 acpid.socket stop waiting
377 uuidd.socket stop waiting
416 systemd-networkd-wait-online.service stop waiting
373 acpid.path stop waiting
432 local-fs.target stop waiting
437 cryptsetup.target stop waiting
341 lxd.socket stop waiting
491 systemd-journald.service restart waiting
340 sockets.target stop waiting
330 var-lib-lxcfs.mount stop waiting
430 cloud-init-local.service stop waiting
453 paths.target stop waiting
402 iscsid.socket stop waiting
439 local-fs-pre.target stop waiting
392 dbus.socket stop waiting
440 systemd-resolved.service stop waiting
353 systemd-ask-password-console.path stop waiting
324 systemd-reboot.service start waiting
498 systemd-journal-flush.service restart waiting
325 final.target start waiting
414 systemd-sysctl.service stop waiting
331 run-user-0.mount stop waiting
435 network.target stop waiting
457 systemd-tmpfiles-setup.service stop waiting
458 systemd-ask-password-wall.path stop waiting
329 umount.target start waiting
369 unattended-upgrades.service stop running
434 network-pre.target stop waiting
436 systemd-tmpfiles-setup-dev.service stop waiting
456 systemd-update-utmp.service stop waiting
389 apport-forward.socket stop waiting
497 systemd-journald-audit.socket start waiting

43 jobs listed.
root@uu-systemd-onshutdown:~#