Bug#850074: systemd: "Freezing execution" mode breaks batch upgrades

[Zack Weinberg]

On Tue, Jan 3, 2017 at 4:29 PM, Michael Biebl <biebl at debian.org> wrote:
> Aha, thanks a lot for the reproducer. This helps a lot!
>
> Will forward this issue upstream. daemon-reexec should handle the case
> of a full /run more gracefully.

Thanks.  When you do that, please also mention that journald doesn't
handle full partitions gracefully either (it goes into an infinite
loop spamming log messages about how it can't save log messages) and
that when Storage=auto and /var/log/journal doesn't exist, journals
are saved to /run and never rotated!  This means that in a default
installation of unstable, if the system is left up 24x7 and there's a
user cron job that runs every five minutes, /run will be full in less
than two weeks.  (Relatedly, user cron jobs produce an awful lot of
log chatter:

Jan  3 08:45:01 kenaz CRON[27272]: (<redacted>) CMD (<redacted>)
Jan  3 08:45:02 kenaz systemd[1]: Created slice User Slice of <redacted>.
Jan  3 08:45:02 kenaz systemd[1]: systemd-timesyncd.service: Cannot
add dependency job, ignoring: Unit systemd-timesyncd.service is
masked.
Jan  3 08:45:02 kenaz systemd[1]: Starting User Manager for UID 1006...
Jan  3 08:45:02 kenaz systemd[1]: Started Session 17888 of user <redacted>.
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Timers.
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Sockets.
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Paths.
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Basic System.
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Default.
Jan  3 08:45:02 kenaz systemd[27284]: Startup finished in 7ms.
Jan  3 08:45:02 kenaz systemd[1]: Started User Manager for UID 1006.
Jan  3 08:45:02 kenaz systemd[1]: Stopping User Manager for UID 1006...
Jan  3 08:45:02 kenaz systemd[27284]: Reached target Shutdown.
Jan  3 08:45:02 kenaz systemd[27284]: Starting Exit the Session...
Jan  3 08:45:02 kenaz systemd[27284]: Stopped target Default.
Jan  3 08:45:02 kenaz systemd[27284]: Stopped target Basic System.
Jan  3 08:45:02 kenaz systemd[27284]: Stopped target Timers.
Jan  3 08:45:02 kenaz systemd[27284]: Stopped target Sockets.
Jan  3 08:45:02 kenaz systemd[27284]: Stopped target Paths.
Jan  3 08:45:02 kenaz systemd[27284]: Received SIGRTMIN+24 from PID
27309 (kill).
Jan  3 08:45:02 kenaz systemd[1]: Stopped User Manager for UID 1006.
Jan  3 08:45:02 kenaz systemd[1]: Removed slice User Slice of <redacted>.

If you know off the top of your head how to squelch these I would love
to hear about it.)

zw