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man: list scope and slice units in systemd(1)

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Lennart Poettering 2013-07-19 18:44:33 +02:00
parent 60211b3507
commit 1ec96668dd
2 changed files with 33 additions and 19 deletions
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2
TODO
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@ -46,7 +46,7 @@ CGroup Rework Completion:
* introduce high-level settings for RT budget, swappiness
* wiki: document new bus APIs of PID 1 (transient units, Reloading signal)
* review: scope units, slice units, pid1, pam_system, systemctl commands
* review: scope units, slice units, pam_system, systemctl commands
* Send SIGHUP and SIGTERM in session scopes

50
man/systemd.xml
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@ -285,25 +285,27 @@
<title>Concepts</title>
<para>systemd provides a dependency system between
various entities called "units". Units encapsulate
various objects that are relevant for system boot-up
and maintenance. The majority of units are configured
in unit configuration files, whose syntax and basic
set of options is described in
various entities called "units" of 12 different
types. Units encapsulate various objects that are
relevant for system boot-up and maintenance. The
majority of units are configured in unit configuration
files, whose syntax and basic set of options is
described in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
however some are created automatically from other
configuration or dynamically from system state. Units
may be 'active' (meaning started, bound, plugged in,
... depending on the unit type, see below), or
'inactive' (meaning stopped, unbound, unplugged, ...),
as well as in the process of being activated or
deactivated, i.e. between the two states (these states
are called 'activating', 'deactivating'). A special
'failed' state is available as well which is very
similar to 'inactive' and is entered when the service
failed in some way (process returned error code on
exit, or crashed, or an operation timed out). If this
state is entered the cause will be logged, for later
configuration, dynamically from system state or
programmatically at runtime. Units may be 'active'
(meaning started, bound, plugged in, ... depending on
the unit type, see below), or 'inactive' (meaning
stopped, unbound, unplugged, ...), as well as in the
process of being activated or deactivated,
i.e. between the two states (these states are called
'activating', 'deactivating'). A special 'failed'
state is available as well which is very similar to
'inactive' and is entered when the service failed in
some way (process returned error code on exit, or
crashed, or an operation timed out). If this state is
entered the cause will be logged, for later
reference. Note that the various unit types may have a
number of additional substates, which are mapped to
the five generalized unit states described
@ -312,7 +314,7 @@
<para>The following unit types are available:</para>
<orderedlist>
<listitem><para>Service units, which control
<listitem><para>Service units, which start and control
daemons and the processes they consist of. For
details see
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
@ -369,6 +371,18 @@
objects change or are modified. See
<citerefentry><refentrytitle>systemd.path</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
<listitem><para>Slice units may be used to
group units which manage system processes
(such as service and scope units) in a
hierachial tree for resource management
purposes. See
<citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
<listitem><para>Scope units are similar to
service units, but manage foreign processes
instead of starting them as well. See
<citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
</orderedlist>
<para>Units are named as their configuration