wiki-grav/pages/02.linux/systemd-automount/default.en.md

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Systemd can be used to mount filesystems not only on boot (simple .mount file), but also on request by any process. (.automount file)

Mount file

The .mount file should be placed in /etc/systemd/system
NOTE: The filename must be (mountpoint).mount with slashes / being replaced with dashes -
Example: /mnt/target --> mnt-target.mount

Here's an example .mount file for a CIFS share

[Unit]
Description=cifs mount

[Mount]
What=//(url/ip)/(sharename)
Where=/(target mountpoint)
Type=cifs
Options=defaults,username=(user),password=(password),file_mode=0640,dir_mode=0750,iocharset=utf8,uid=(local uid),gid=(local gid)

[Install]
WantedBy=multi-user.target

Automount file

The corresponding .automount file needs to have the same name as its .mount file
Example: mnt-target.mount and mnt-target.automount

[Unit]
Description=cifs automount

[Automount]
Where=/(target mountpoint)

[Install]
WantedBy=multi-user.target

Enable the .automount file to mount the filesystem when necessary
# systemctl enable (target-mount).automount