From a3db436909aadc7f77911285e6cd667c47045a67 Mon Sep 17 00:00:00 2001

From: Jan Engelhardt <jengelh@inai.de>

Date: Thu, 7 Nov 2013 01:17:49 +0100

Subject: [PATCH] man: add rationale into systemd-halt(8)

The explanation is from

http://people.debian.org/~stapelberg/docs/systemd-dependencies.html

---

 man/systemd-halt.service.xml | 6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/man/systemd-halt.service.xml b/man/systemd-halt.service.xml

index 812281e..90b443f 100644

--- a/man/systemd-halt.service.xml

+++ b/man/systemd-halt.service.xml

@@ -83,6 +83,12 @@

                 remaining swap devices, detach all remaining storage

                 devices and kill all remaining processes.</para>

+                <para>It is necessary to have this code in a separate binary

+                because otherwise rebooting after an upgrade might be broken —

+                the running PID 1 could still depend on libraries which are not

+                available any more, thus keeping the filesystem busy, which

+                then cannot be re-mounted read-only.</para>

+

                 <para>Immediately before executing the actual system

                 halt/poweroff/reboot/kexec

                 <filename>systemd-shutdown</filename> will run all