1SYSTEMD.AUTOMOUNT(5)           systemd.automount          SYSTEMD.AUTOMOUNT(5)
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NAME

6       systemd.automount - Automount unit configuration
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SYNOPSIS

9       automount.automount
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DESCRIPTION

12       A unit configuration file whose name ends in ".automount" encodes
13       information about a file system automount point controlled and
14       supervised by systemd. Automount units may be used to implement
15       on-demand mounting as well as parallelized mounting of file systems.
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17       This man page lists the configuration options specific to this unit
18       type. See systemd.unit(5) for the common options of all unit
19       configuration files. The common configuration items are configured in
20       the generic [Unit] and [Install] sections. The automount specific
21       configuration options are configured in the [Automount] section.
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23       Automount units must be named after the automount directories they
24       control. Example: the automount point /home/lennart must be configured
25       in a unit file home-lennart.automount. For details about the escaping
26       logic used to convert a file system path to a unit name see
27       systemd.unit(5). Note that automount units cannot be templated, nor is
28       it possible to add multiple names to an automount unit by creating
29       additional symlinks to its unit file.
30
31       For each automount unit file a matching mount unit file (see
32       systemd.mount(5) for details) must exist which is activated when the
33       automount path is accessed. Example: if an automount unit
34       home-lennart.automount is active and the user accesses /home/lennart
35       the mount unit home-lennart.mount will be activated.
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37       Note that automount units are separate from the mount itself, so you
38       should not set After= or Requires= for mount dependencies here. For
39       example, you should not set After=network-online.target or similar on
40       network filesystems. Doing so may result in an ordering cycle.
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42       Note that automount support on Linux is privileged, automount units are
43       hence only available in the system service manager (and root's user
44       service manager), but not in unprivileged users' service managers.
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46       Note that automount units should not be nested. (The establishment of
47       the inner automount point would unconditionally pin the outer mount
48       point, defeating its purpose.)
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AUTOMATIC DEPENDENCIES

51   Implicit Dependencies
52       The following dependencies are implicitly added:
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54       •   If an automount unit is beneath another mount unit in the file
55           system hierarchy, a requirement and ordering dependencies are
56           created to the on the unit higher in the hierarchy.
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58       •   An implicit Before= dependency is created between an automount unit
59           and the mount unit it activates.
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61   Default Dependencies
62       The following dependencies are added unless DefaultDependencies=no is
63       set:
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65       •   Automount units acquire automatic Before= and Conflicts= on
66           umount.target in order to be stopped during shutdown.
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68       •   Automount units automatically gain an After= dependency on
69           local-fs-pre.target, and a Before= dependency on local-fs.target.
70

FSTAB

72       Automount units may either be configured via unit files, or via
73       /etc/fstab (see fstab(5) for details).
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75       For details how systemd parses /etc/fstab see systemd.mount(5).
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77       If an automount point is configured in both /etc/fstab and a unit file,
78       the configuration in the latter takes precedence.
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OPTIONS

81       Automount unit files may include [Unit] and [Install] sections, which
82       are described in systemd.unit(5).
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84       Automount unit files must include an [Automount] section, which carries
85       information about the file system automount points it supervises. The
86       options specific to the [Automount] section of automount units are the
87       following:
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89       Where=
90           Takes an absolute path of a directory of the automount point. If
91           the automount point does not exist at time that the automount point
92           is installed, it is created. This string must be reflected in the
93           unit filename. (See above.) This option is mandatory.
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95       ExtraOptions=
96           Extra mount options to use when creating the autofs mountpoint.
97           This takes a comma-separated list of options. This setting is
98           optional. Note that the usual specifier expansion is applied to
99           this setting, literal percent characters should hence be written as
100           "%%".
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102       DirectoryMode=
103           Directories of automount points (and any parent directories) are
104           automatically created if needed. This option specifies the file
105           system access mode used when creating these directories. Takes an
106           access mode in octal notation. Defaults to 0755.
107
108       TimeoutIdleSec=
109           Configures an idle timeout. Once the mount has been idle for the
110           specified time, systemd will attempt to unmount. Takes a unit-less
111           value in seconds, or a time span value such as "5min 20s". Pass 0
112           to disable the timeout logic. The timeout is disabled by default.
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114       Check systemd.unit(5), systemd.exec(5), and systemd.kill(5) for more
115       settings.
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SEE ALSO

118       systemd(1), systemctl(1), systemd.unit(5), systemd.mount(5), mount(8),
119       automount(8), systemd.directives(7)
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123systemd 250                                               SYSTEMD.AUTOMOUNT(5)
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