systemd/units/systemd-journal-flush.service
Zbigniew Jędrzejewski-Szmek fe7f113c13 units: skip some units in the initrd
I'm working on building initramfs images directly from normal packages, and it
doesn't make sense for those units to be started. Pristine system rpms need to
behave correctly as much as possible also in the initrd, and those units are
enabled by the rpms. There usually isn't enough time for the timer to actually
fire, but starting it gives a line on the console and generally looks confusing
and sloppy. Flushing the journal means that its actually lost, since the real
/var is not available yet.

Another approach would be not enable those units, but right now they are
statically enabled, and changing that would be more work, and doesn't really
seem necessary, since the condition checks are very quick.

Checking for /etc/initrd-release is the standard condition that the initrd
units use, so let's do the same here.
2021-05-22 15:58:40 +09:00

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# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=Flush Journal to Persistent Storage
Documentation=man:systemd-journald.service(8) man:journald.conf(5)
DefaultDependencies=no
Requires=systemd-journald.service
After=systemd-journald.service systemd-remount-fs.service
Before=systemd-tmpfiles-setup.service
RequiresMountsFor=/var/log/journal
ConditionPathExists=!/etc/initrd-release
[Service]
ExecStart=journalctl --flush
ExecStop=journalctl --smart-relinquish-var
Type=oneshot
RemainAfterExit=yes
TimeoutSec=90s