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| |
| <refentry id="systemd.mount"> |
| <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>5</manvolnum> |
| </refmeta> |
| |
| <refnamediv> |
| <refname>systemd.mount</refname> |
| <refpurpose>systemd mount configuration files</refpurpose> |
| </refnamediv> |
| |
| <refsynopsisdiv> |
| <para><filename>systemd.mount</filename></para> |
| </refsynopsisdiv> |
| |
| <refsect1> |
| <title>Description</title> |
| |
| <para>A unit configuration file whose name ends in |
| <filename>.mount</filename> encodes information about |
| a file system mount point controlled and supervised by |
| systemd.</para> |
| |
| <para>This man page lists the configuration options |
| specific to this unit type. See |
| <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
| for the common options of all unit configuration |
| files. The common configuration items are configured |
| in the generic [Unit] and [Install] sections. The |
| mount specific configuration options are configured |
| in the [Mount] section.</para> |
| |
| <para>Additional options are listed in |
| <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| which define the execution environment the |
| <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> |
| binary is executed in.</para> |
| |
| <para>Mount units must be named after the mount point |
| directories they control. Example: the mount point |
| <filename>/home/lennart</filename> must be configured |
| in a unit file |
| <filename>home-lennart.mount</filename>. For details |
| about the escaping logic used to convert a file system |
| path to a unit name see |
| <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> |
| |
| <para>Optionally, a mount unit may be accompanied by |
| an automount unit, to allow on-demand or parallelized |
| mounting. See |
| <citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> |
| |
| <para>If an mount point is beneath another mount point |
| in the file system hierarchy, a dependency between both |
| units is created automatically.</para> |
| |
| <para>Mount points created at runtime independent on |
| unit files or <filename>/etc/fstab</filename> will be |
| monitored by systemd and appear like any other mount |
| unit in systemd.</para> |
| </refsect1> |
| |
| <refsect1> |
| <title><filename>fstab</filename></title> |
| |
| <para>Mount units may either be configured via unit |
| files, or via <filename>/etc/fstab</filename> (see |
| <citerefentry><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
| for details).</para> |
| |
| <para>When reading <filename>/etc/fstab</filename> a |
| few special mount options are understood by systemd |
| which influence how dependencies are created for mount |
| points from <filename>/etc/fstab</filename>. If |
| <option>comment=systemd.mount</option> is specified as |
| mount option, then systemd will create a dependency of |
| type <option>Wants</option> from either |
| <filename>local-fs.target</filename> or |
| <filename>remote-fs.target</filename>, depending |
| whether the file system is local or remote. If |
| <option>comment=systemd.automount</option> is set, an |
| automount unit will be created for the file system. See |
| <citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
| for details.</para> |
| |
| <para>If a mount point is configured in both |
| <filename>/etc/fstab</filename> and a unit file, the |
| configuration in the latter takes precedence.</para> |
| </refsect1> |
| |
| <refsect1> |
| <title>Options</title> |
| |
| <para>Mount files must include a [Mount] section, |
| which carries information about the file system mount points it |
| supervises. A number of options that may be used in |
| this section are shared with other unit types. These |
| options are documented in |
| <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>. The |
| options specific to the [Mount] section of mount |
| units are the following:</para> |
| |
| <variablelist> |
| |
| <varlistentry> |
| <term><varname>What=</varname></term> |
| <listitem><para>Takes an absolute path |
| of a device node, file or other |
| resource to mount. See |
| <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> |
| for details. If this refers to a |
| device node, a dependency on the |
| respective device unit is |
| automatically created. (See |
| <citerefentry><refentrytitle>systemd.device</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.) |
| This option is |
| mandatory.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>Where=</varname></term> |
| <listitem><para>Takes an absolute path |
| of a directory of the mount point. If |
| the mount point is not existing at |
| time of mounting, it is created. This |
| string must be reflected in the unit |
| file name. (See above.) This option is |
| mandatory.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>Type=</varname></term> |
| <listitem><para>Takes a string for the |
| filesystem type. See |
| <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> |
| for details. This setting is |
| optional.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>Options=</varname></term> |
| |
| <listitem><para>Mount options to use |
| when mounting. This takes a comma |
| separated list of options. This |
| setting is optional.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>DirectoryMode=</varname></term> |
| <listitem><para>Directories of mount |
| points (and any parent directories) |
| are automatically created if |
| needed. This option specifies the file |
| system access mode used when creating |
| these directories. Takes an access |
| mode in octal notation. Defaults to |
| 0755.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>TimeoutSec=</varname></term> |
| <listitem><para>Configures the time to |
| wait for the mount command to |
| finish. If a command does not exit |
| within the configured time the mount |
| will be considered failed and be shut |
| down again. All commands still running |
| will be terminated forcibly via |
| SIGTERM, and after another delay of |
| this time with SIGKILL. (See |
| <option>KillMode=</option> below.) |
| Takes a unit-less value in seconds, or |
| a time span value such as "5min |
| 20s". Pass 0 to disable the timeout |
| logic. Defaults to |
| 60s.</para></listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>KillMode=</varname></term> |
| <listitem><para>Specifies how |
| processes of this mount shall be |
| killed. One of |
| <option>control-group</option>, |
| <option>process-group</option>, |
| <option>process</option>, |
| <option>none</option>.</para> |
| |
| <para>This option is mostly equivalent |
| to the <option>KillMode=</option> |
| option of service files. See |
| <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
| for details.</para></listitem> |
| </varlistentry> |
| </variablelist> |
| </refsect1> |
| |
| <refsect1> |
| <title>See Also</title> |
| <para> |
| <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemd.device</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> |
| </para> |
| </refsect1> |
| |
| </refentry> |