конфигурация блока автомонтирования (Automount unit configuration)
Имя (Name)
systemd.automount - Automount unit configuration
Синопсис (Synopsis)
automount.automount
Описание (Description)
A unit configuration file whose name ends in ".automount" encodes
information about a file system automount point controlled and
supervised by systemd.
This man page lists the configuration options specific to this
unit type. See systemd.unit(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
systemd.mount(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.
Note that automount units are separate from the mount itself, so
you should not set After= or Requires= for mount dependencies
here. For example, you should not set After=network-online.target
or similar on network filesystems. Doing so may result in an
ordering cycle.
Note that automount support on Linux is privileged, automount
units are hence only available in the system service manager (and
root's user service manager), but not in unprivileged user's
service manager.
Автоматические зависимости (Automatic dependencies)
Implicit Dependencies
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.
Default Dependencies
The following dependencies are added unless
DefaultDependencies=no is set:
• Automount units acquire automatic Before= and Conflicts= on
umount.target in order to be stopped during shutdown.
• Automount units automatically gain an After= dependency on
local-fs-pre.target, and a Before= dependency on
local-fs.target.
Fstab (Fstab)
Automount units may either be configured via unit files, or via
/etc/fstab (see fstab(5) for details).
For details how systemd parses /etc/fstab see systemd.mount(5).
If an automount point is configured in both /etc/fstab and a unit
file, the configuration in the latter takes precedence.
Параметры (Options)
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:
Where=
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.
DirectoryMode=
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.
TimeoutIdleSec=
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.
Смотри также (See also)
systemd(1), systemctl(1), systemd.unit(5), systemd.mount(5),
mount(8), automount(8), systemd.directives(7)
