man: document tmpfiles.d/ user/group resolvability needs

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Lennart Poettering 2019-07-03 13:04:11 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent 93912e872f
commit 007b77ac6c
1 changed files with 8 additions and 0 deletions

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@ -495,6 +495,14 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
lines, when omitted or when set to <literal>-</literal>, the file ownership will not be modified. These
parameters are ignored for <varname>x</varname>, <varname>r</varname>, <varname>R</varname>,
<varname>L</varname>, <varname>t</varname>, and <varname>a</varname> lines.</para>
<para>This field should generally only reference system users/groups, i.e. users/groups that are
guaranteed to be resolvable during early boot. If this field references users/groups that only become
resolveable during later boot (i.e. after NIS, LDAP or a similar networked directory service become
available), execution of the operations declared by the line will likely fail. Also see <ulink
url="https://systemd.io/UIDS-GIDS.html#notes-on-resolvability-of-user-and-group-names">Notes on
Resolvability of User and Group Names</ulink> for more information on requirements on system user/group
definitions.</para>
</refsect2>
<refsect2>