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authorSven Eden <yamakuzure@gmx.net>2017-07-04 16:59:46 +0200
committerSven Eden <yamakuzure@gmx.net>2017-07-05 08:51:07 +0200
commitf7afdbbb986bed7022976612a740027697ce93ec (patch)
tree1426fa660bcb3c4a91d69208bdb8d06597410be3 /man
parent20cca8d0627a8edc265314d700f5c4aa96ebed4e (diff)
Prep v232: Apply missing updates from upstream
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-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of elogind.
-
- Copyright 2016 Lennart Poettering
-
- elogind 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.
-
- elogind is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with elogind; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="elogind-mount"
- xmlns:xi="http://www.w3.org/2001/XInclude">
-
- <refentryinfo>
- <title>elogind-mount</title>
- <productname>elogind</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>elogind-mount</refentrytitle>
- <manvolnum>1</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>elogind-mount</refname>
- <refpurpose>Establish a mount or auto-mount point transiently</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <cmdsynopsis>
- <command>elogind-mount</command>
- <arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
- <arg choice="plain"><replaceable>WHAT</replaceable></arg>
- <arg choice="opt"><replaceable>WHERE</replaceable></arg>
- </cmdsynopsis>
- <cmdsynopsis>
- <command>elogind-mount</command>
- <arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
- <arg choice="plain"><option>--list</option></arg>
- </cmdsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>elogind-mount</command> may be used to create and start a transient <filename>.mount</filename> or
- <filename>.automount</filename> unit of the file system <replaceable>WHAT</replaceable> on the mount point
- <replaceable>WHERE</replaceable>.</para>
-
- <para>In many ways, <command>elogind-mount</command> is similar to the lower-level
- <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> command, however instead
- of executing the mount operation directly and immediately, <command>elogind-mount</command> schedules it through
- the service manager job queue, so that it may pull in further dependencies (such as parent mounts, or a file system
- checker to execute a priori), and may make use of the auto-mounting logic.</para>
-
- <para>The command takes either one or two arguments. If only one argument is specified it should refer to a block
- device containing a file system (e.g. <literal>/dev/sdb1</literal>), which is then probed for a label and other
- metadata, and is mounted to a directory whose name is generated from the label. In this mode the block device must
- exist at the time of invocation of the command, so that it may be probed. If the device is found to be a removable
- block device (e.g. a USB stick) an automount point instead of a regular mount point is created (i.e. the
- <option>--automount=</option> option is implied, see below).</para>
-
- <para>If two arguments are specified the first indicates the mount source (the <replaceable>WHAT</replaceable>) and
- the second indicates the path to mount it on (the <replaceable>WHERE</replaceable>). In this mode no probing of the
- source is attempted, and a backing device node doesn't have to exist yet. However, if this mode is combined with
- <option>--discover</option>, device node probing for additional metadata is enabled, and – much like in the
- single-argument case discussed above – the specified device has to exist at the time of invocation of the
- command.</para>
-
- <para>Use the <option>--list</option> command to show a terse table of all local, known block devices with file
- systems that may be mounted with this command.</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist>
-
- <varlistentry>
- <term><option>--no-block</option></term>
-
- <listitem>
- <para>Do not synchronously wait for the requested operation to finish. If this is not specified, the job will
- be verified, enqueued and <command>elogind-mount</command> will wait until the mount or automount unit's
- start-up is completed. By passing this argument, it is only verified and enqueued.</para>
- </listitem>
- </varlistentry>
-
- <xi:include href="standard-options.xml" xpointer="no-pager"/>
- <xi:include href="standard-options.xml" xpointer="no-ask-password"/>
-
- <varlistentry>
- <term><option>--quiet</option></term>
- <term><option>-q</option></term>
-
- <listitem><para>Suppresses additional informational output while running.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--discover</option></term>
-
- <listitem><para>Enable probing of the mount source. This switch is implied if a single argument is specified on
- the command line. If passed, additional metadata is read from the device to enhance the unit to create. For
- example, a descriptive string for the transient units is generated from the file system label and device
- model. Moreover if a removable block device (e.g. USB stick) is detected an automount unit instead of a regular
- mount unit is created, with a short idle time-out, in order to ensure the file-system is placed in a clean
- state quickly after each access.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--type=</option></term>
- <term><option>-t</option></term>
-
- <listitem><para>Specifies the file system type to mount (e.g. <literal>vfat</literal>, <literal>ext4</literal>,
- …). If omitted (or set to <literal>auto</literal>) the file system is determined automatically.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--options=</option></term>
- <term><option>-o</option></term>
-
- <listitem><para>Additional mount options for the mount point.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--fsck=</option></term>
-
- <listitem><para>Takes a boolean argument, defaults to on. Controls whether to run a file system check
- immediately before the mount operation. In the automount case (see <option>--automount=</option> below) the
- check will be run the moment the first access to the device is made, which might slightly delay the
- access.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--description=</option></term>
-
- <listitem><para>Provide a description for the mount or automount unit. See <varname>Description=</varname> in
- <citerefentry><refentrytitle>elogind.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
- </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--property=</option></term>
- <term><option>-p</option></term>
-
- <listitem><para>Sets a unit property for the mount unit that is created. This takes an assignment in the same
- format as <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
- <command>set-property</command> command.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--automount=</option></term>
-
- <listitem><para>Takes a boolean argument. Controls whether to create an automount point or a regular mount
- point. If true an automount point is created that is backed by the actual file system at the time of first
- access. If false a plain mount point is created that is backed by the actual file system immediately. Automount
- points have the benefit that the file system stays unmounted and hence in clean state until it is first
- accessed. In automount mode the <option>--timeout-idle-sec=</option> switch (see below) may be used to ensure
- the mount point is unmounted automatically after the last access and an idle period passed.</para>
-
- <para>If this switch is not specified it defaults to false. If not specified and <option>--discover</option> is
- used (or only a single argument passed, which implies <option>--discover</option>, see above), and the file
- system block device is detected to be removable, it is set to true, in order to increase the chance that the
- file system is in a fully clean state if the device is unplugged abruptly.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-A</option></term>
-
- <listitem><para>Equivalent to <option>--automount=yes</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--timeout-idle-sec=</option></term>
-
- <listitem><para>Takes a time value that controls the idle timeout in automount mode. If set to
- <literal>infinity</literal> (the default) no automatic unmounts are done. Otherwise the file system backing the
- automount point is detached after the last access and the idle timeout passed. See
- <citerefentry><refentrytitle>elogind.time</refentrytitle><manvolnum>7</manvolnum></citerefentry> for details on
- the time syntax supported. This option has no effect if only a regular mount is established, and automounting
- is not used.</para>
-
- <para>Note that if <option>--discover</option> is used (or only a single argument passed, which implies
- <option>--discover</option>, see above), and the file system block device is detected to be removable,
- <option>--timeout-idle-sec=1s</option> is implied.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--automount-property=</option></term>
-
- <listitem><para>Similar to <option>--property=</option>, but applies additional properties to the automount
- unit created, instead of the mount unit.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--bind-device=</option></term>
-
- <listitem><para>Takes a boolean argument, defaults to off. This option only has an effect in automount mode,
- and controls whether the automount unit shall be bound to the backing device's lifetime. If enabled, the
- automount point will be removed automatically when the backing device vanishes. If disabled the automount point
- stays around, and subsequent accesses will block until backing device is replugged. This option has no effect
- in case of non-device mounts, such as network or virtual file system mounts.</para>
-
- <para>Note that if <option>--discover</option> is used (or only a single argument passed, which implies
- <option>--discover</option>, see above), and the file system block device is detected to be removable, this
- option is implied.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--list</option></term>
-
- <listitem><para>Instead of establishing a mount or automount point, print a terse list of block devices
- containing file systems that may be mounted with <literal>elogind-mount</literal>, along with useful metadata
- such as labels, etc.</para></listitem>
- </varlistentry>
-
- <xi:include href="user-system-options.xml" xpointer="user" />
- <xi:include href="user-system-options.xml" xpointer="system" />
- <xi:include href="user-system-options.xml" xpointer="host" />
- <xi:include href="user-system-options.xml" xpointer="machine" />
-
- <xi:include href="standard-options.xml" xpointer="help" />
- <xi:include href="standard-options.xml" xpointer="version" />
- </variablelist>
-
- </refsect1>
-
- <refsect1>
- <title>Exit status</title>
-
- <para>On success, 0 is returned, a non-zero failure
- code otherwise.</para>
- </refsect1>
-
- <refsect1>
- <title>The udev Database</title>
-
- <para>If <option>--discover</option> is used, <command>elogind-mount</command> honours a couple of additional udev
- properties of block devices:</para>
-
- <variablelist class='udev-directives'>
- <varlistentry>
- <term><varname>SYSTEMD_MOUNT_OPTIONS=</varname></term>
-
- <listitem><para>The mount options to use, if <option>--options=</option> is not used.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>SYSTEMD_MOUNT_WHERE=</varname></term>
-
- <listitem><para>The file system path to place the mount point at, instead of the automatically generated
- one.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>elogind</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>elogind.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>elogind.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>elogind.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>elogind-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>