This bug was fixed in the package systemd - 246.6-1ubuntu1.2
---------------
systemd (246.6-1ubuntu1.2) groovy; urgency=medium
[ Ioanna Alifieraki ]
*
d/p/lp1911187-systemctl-do-not-shutdown-immediately-on-scheduled-shutdo.patch:
Do not shutdown immediately when scheduled shutdown fails (LP: #1911187)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=bbca658178d27e0ffaf759ba3115878d26c917a6
[ Dan Streetman ]
* d/p/debian/patches/lp1880258-log-nxdomain-as-debug.patch:
Change NXDOMAIN 'errors' to log level debug (LP: #1880258)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b8e864eb907469616d688eab39b20491693d7c3a
* d/p/lp1913763-udev-rules-add-rule-to-create-dev-ptp_hyperv.patch:
Create symlink for hyperv-provided ptp device (LP: #1913763)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=83c7476c80e4139ee7c1ec18a549c30d37d3b4b2
-- Ioanna Alifieraki <ioanna-maria.alifier...@canonical.com> Tue, 23
Feb 2021 02:31:55 +0200
** Changed in: systemd (Ubuntu Groovy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1911187
Title:
scheduled reboot reboots immediately if dbus or logind is not
available
Status in systemd package in Ubuntu:
Fix Released
Status in systemd source package in Bionic:
Fix Committed
Status in systemd source package in Focal:
Fix Committed
Status in systemd source package in Groovy:
Fix Released
Bug description:
[IMPACT]
When, for whatever reason, logind or dbus is not available scheduled reboot
reboots the machine immediately.
From the sources it seems that this is intended :
https://github.com/systemd/systemd/blob/master/src/systemctl/systemctl-logind.c#L318
However, I report this as a bug since this is against the logic of a
scheduled reboot; if someone schedules a reboot they want the system to reboot
at the specified time not immediately.
There has been a discussion upstream (
https://github.com/systemd/systemd/issues/17575 ) and
a PR ( https://github.com/systemd/systemd/pull/18010 ).
Upstream community is not willing to accept the patch but debian is.
I open this bug to to pull the patch into Ubuntu once it lands in debian.
[TEST PLAN]
The simpler reproducer is to disable dbus to imitate the real world
case.
# systemctl stop dbus.service
# systemctl stop dbus.socket
# shutdown +1140 -r "REBOOT!"
Failed to set wall message, ignoring: Failed to activate service
'org.freedesktop.login1': timed out (service_start_timeout=25000ms)
Failed to call ScheduleShutdown in logind, proceeding with immediate
shutdown: Connection timed out
Connection to groovy closed by remote host.
Connection to groovy closed.
After this patch is applied the shutdown command does not reboot immediately
if it fails to schedule the shutdown. Instead it does nothing
and returns a non zero return code that can be checked by calling scripts or
users.
[WHERE PROBLEM COULD OCCUR]
This patch changes the behaviour of scheduled reboot in case logind or dbus
has failed.
Originally, if logind is not available (call to logind bus fails
https://github.com/systemd/systemd/blob/master/src/systemctl/systemctl-logind.c#L319)
it proceeds with immediate shutdown.
This patch changes this behaviour and instead of shutting down it does
nothing.
The actual regression potential is a user asking for a reboot and not getting
it, so the largest regression potential is any existing users (human or
programmatic) that are requesting a scheduled shutdown but not checking the
return value for error.
Any other regression would likely result in the system incorrectly not
rebooted, or incorrectly scheduled for reboot.
[OTHER]
This is now fixed in H, currently affects B,G,F.
Debian bug reports :
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931235
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=960042
Upstream issue : https://github.com/systemd/systemd/issues/17575
PR : https://github.com/systemd/systemd/pull/18010
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