Public bug reported:
It is possible that the postinst is going to trigger a restart of
systemd-binfmt.service. Take a look at this section of systemd.postinst
_update_binfmt() {
_systemctl restart systemd-binfmt.service || true
}
# Update Message Catalogs database and binfmt registrations in response to dpkg
triggers
if [ "$1" = "triggered" ]; then
shift
for trigger in $@; do
case $trigger in
/usr/lib/systemd/catalog)
_update_catalog an
;;
/usr/lib/binfmt.d)
_update_binfmt
;;
esac
done
exit 0
fi
It happened to me when I create a Incus Ubuntu noble container from an
older image (2024-05-30) and then simply did a "apt update" plus "apt
dist-upgrade" in the container.
I'm getting
Failed to restart systemd-binfmt.service: Unit systemd-binfmt.service is
masked.
I'm not getting that error when I launch from the latest Incus image. So
something might depend on other things.
Nevertheless, the postinst should not even try to restart a service that
is masked.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2077869
Title:
systemd.postinst wants to restart masked systemd-binfmt.service
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