man: document that the passive units cannot be pulled in mnaully

This commit is contained in:
Lennart Poettering 2013-03-26 15:16:50 +01:00
parent a87586a171
commit dfebfe67dd

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@ -811,6 +811,14 @@
(via a <varname>Wants=</varname> type
dependency).</para>
<para>Note that these passive units cannot be started
manually, i.e. <literal>systemctl start
time-sync.target</literal> will fail with an
error. They can only be pulled in by dependency. This
is enforced since they exist for ordering purposes
only and thus are not useful as only unit within a
transaction.</para>
<variablelist>
<varlistentry>
<term><filename>local-fs-pre.target</filename></term>