systemd.automount - Automount unit configuration
A unit configuration file whose name ends in ".automount" encodes
information about a file system automount point controlled and supervised by
This man page lists the configuration options specific to this unit type. See
(5) for the common options of all unit configuration files.
The common configuration items are configured in the generic [Unit] and
[Install] sections. The automount specific configuration options are
configured in the [Automount] section.
Automount units must be named after the automount directories they control.
Example: the automount point /home/lennart must be configured in a unit file
home-lennart.automount. For details about the escaping logic used to convert a
file system path to a unit name see systemd.unit
(5). Note that
automount units cannot be templated, nor is it possible to add multiple names
to an automount unit by creating additional symlinks to its unit file.
For each automount unit file a matching mount unit file (see
(5) for details) must exist which is activated when the
automount path is accessed. Example: if an automount unit
home-lennart.automount is active and the user accesses /home/lennart the mount
unit home-lennart.mount will be activated.
Automount units may be used to implement on-demand mounting as well as
parallelized mounting of file systems.
The following dependencies are implicitly added:
•If an automount unit is beneath
another mount unit in the file system hierarchy, both a requirement and an
ordering dependency between both units are created automatically.
•An implicit Before= dependency
is created between an automount unit and the mount unit it activates.
The following dependencies are added unless DefaultDependencies=no
•Automount units acquire automatic
Before= and Conflicts= on umount.target in order to be stopped
Automount units may either be configured via unit files, or via /etc/fstab (see
(5) for details).
For details how systemd parses /etc/fstab see systemd.mount
If an automount point is configured in both /etc/fstab and a unit file, the
configuration in the latter takes precedence.
Automount files must include an [Automount] section, which carries information
about the file system automount points it supervises. The options specific to
the [Automount] section of automount units are the following:
Takes an absolute path of a directory of the
automount point. If the automount point does not exist at time that the
automount point is installed, it is created. This string must be reflected in
the unit filename. (See above.) This option is mandatory.
Directories of automount 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.
Configures an idle timeout. Once the mount has
been idle for the specified time, systemd will attempt to unmount. Takes a
unit-less value in seconds, or a time span value such as "5min 20s".
Pass 0 to disable the timeout logic. The timeout is disabled by default.