mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-23 17:34:00 +03:00
3747daa2e5
The commit 9017f5d88d prohibits
to unmount devices on remote host. This makes reenable such feature.
321 lines
15 KiB
XML
321 lines
15 KiB
XML
<?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 systemd.
|
||
|
||
Copyright 2016 Lennart Poettering
|
||
|
||
systemd 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.
|
||
|
||
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
|
||
-->
|
||
|
||
<refentry id="systemd-mount"
|
||
xmlns:xi="http://www.w3.org/2001/XInclude">
|
||
|
||
<refentryinfo>
|
||
<title>systemd-mount</title>
|
||
<productname>systemd</productname>
|
||
|
||
<authorgroup>
|
||
<author>
|
||
<contrib>Developer</contrib>
|
||
<firstname>Lennart</firstname>
|
||
<surname>Poettering</surname>
|
||
<email>lennart@poettering.net</email>
|
||
</author>
|
||
</authorgroup>
|
||
</refentryinfo>
|
||
|
||
<refmeta>
|
||
<refentrytitle>systemd-mount</refentrytitle>
|
||
<manvolnum>1</manvolnum>
|
||
</refmeta>
|
||
|
||
<refnamediv>
|
||
<refname>systemd-mount</refname>
|
||
<refname>systemd-umount</refname>
|
||
<refpurpose>Establish and destroy transient mount or auto-mount points</refpurpose>
|
||
</refnamediv>
|
||
|
||
<refsynopsisdiv>
|
||
<cmdsynopsis>
|
||
<command>systemd-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>systemd-mount</command>
|
||
<arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
|
||
<arg choice="plain"><option>--list</option></arg>
|
||
</cmdsynopsis>
|
||
<cmdsynopsis>
|
||
<command>systemd-mount</command>
|
||
<arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
|
||
<arg choice="plain"><option>--umount</option></arg>
|
||
<arg choice="plain" rep="repeat"><replaceable>WHAT|WHERE</replaceable></arg>
|
||
</cmdsynopsis>
|
||
</refsynopsisdiv>
|
||
|
||
<refsect1>
|
||
<title>Description</title>
|
||
|
||
<para><command>systemd-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>systemd-mount</command> is similar to the lower-level
|
||
<citerefentry project='man-pages'><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> command, however instead
|
||
of executing the mount operation directly and immediately, <command>systemd-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 or regular file containing a file system (e.g. <literal>/dev/sdb1</literal> or
|
||
<literal>/path/to/disk.img</literal>). If it is a block device, 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>
|
||
|
||
<para><command>systemd-umount</command> can be used to unmount a mount or automount point. It is the same
|
||
as <command>systemd-mount</command> <option>--unmount</option>.</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>systemd-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>systemd.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>systemd.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>systemd-mount</literal>, along with useful metadata
|
||
such as labels, etc.</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-u</option></term>
|
||
<term><option>--umount</option></term>
|
||
|
||
<listitem><para>Stop the mount and automount units corresponding to the specified mount points
|
||
<replaceable>WHERE</replaceable> or the devices <replaceable>WHAT</replaceable>.
|
||
<command>systemd-mount</command> with this option or <command>systemd-umount</command> can take multiple arguments
|
||
which can be mount points, devices, <filename>/etc/fstab</filename> style node names, or backing files
|
||
corresponding to loop devices, like
|
||
<command>systemd-mount --umount /path/to/umount /dev/sda1 UUID=xxxxxx-xxxx LABEL=xxxxx /path/to/disk.img</command>.
|
||
Note that when <option>-H</option> or <option>-M</option> is specified, only absolute paths to mount points are
|
||
supported.</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>systemd-mount</command> honors 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>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry project='man-pages'><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
||
<citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
|
||
</para>
|
||
</refsect1>
|
||
|
||
</refentry>
|