1SYSTEMD.AUTOMOUNT(5) systemd.automount SYSTEMD.AUTOMOUNT(5)
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6 systemd.automount - Automount unit configuration
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9 automount.automount
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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.
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16 This man page lists the configuration options specific to this unit
17 type. See systemd.unit(5) for the common options of all unit
18 configuration files. The common configuration items are configured in
19 the generic [Unit] and [Install] sections. The automount specific
20 configuration options are configured in the [Automount] section.
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22 Automount units must be named after the automount directories they
23 control. Example: the automount point /home/lennart must be configured
24 in a unit file home-lennart.automount. For details about the escaping
25 logic used to convert a file system path to a unit name see
26 systemd.unit(5).
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28 For each automount unit file a matching mount unit file (see
29 systemd.mount(5) for details) must exist which is activated when the
30 automount path is accessed. Example: if an automount unit
31 home-lennart.automount is active and the user accesses /home/lennart
32 the mount unit home-lennart.mount will be activated.
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34 Automount units may be used to implement on-demand mounting as well as
35 parallelized mounting of file systems.
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37 If an automount point is beneath another mount point in the file system
38 hierarchy, a dependency between both units is created automatically.
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41 Automount units may either be configured via unit files, or via
42 /etc/fstab (see fstab(5) for details).
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44 For details how systemd parses /etc/fstab see systemd.mount(5).
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46 If an automount point is configured in both /etc/fstab and a unit file,
47 the configuration in the latter takes precedence.
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50 Automount files must include an [Automount] section, which carries
51 information about the file system automount points it supervises. The
52 options specific to the [Automount] section of automount units are the
53 following:
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55 Where=
56 Takes an absolute path of a directory of the automount point. If
57 the automount point does not exist at time that the automount point
58 is installed, it is created. This string must be reflected in the
59 unit filename. (See above.) This option is mandatory.
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61 DirectoryMode=
62 Directories of automount points (and any parent directories) are
63 automatically created if needed. This option specifies the file
64 system access mode used when creating these directories. Takes an
65 access mode in octal notation. Defaults to 0755.
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67 TimeoutIdleSec=
68 Configures an idleness timeout. Once the mount has been idle for
69 the specified time, systemd will attempt to unmount. Takes a
70 unit-less value in seconds, or a time span value such as "5min
71 20s". Pass 0 to disable the timeout logic. The timeout is disabled
72 by default.
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75 systemd(1), systemctl(1), systemd.unit(5), systemd.mount(5), mount(8),
76 automount(8), systemd.directives(7)
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80systemd 219 SYSTEMD.AUTOMOUNT(5)