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Man Pages
AUTOFS(5) FreeBSD File Formats Manual AUTOFS(5)

autofs
automounter filesystem

To compile this driver into the kernel, place the following line in the kernel configuration file:
options AUTOFS
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
autofs_load="YES"

The autofs driver is the kernel component of the automounter infrastructure. Its job is to pass mount requests to the automountd(8) daemon, and pause the processes trying to access the automounted filesystem until the mount is completed. It is mounted by the automount(8).

These options are available when mounting autofs file systems:
Mount options for all filesystems specified in the map entry.
Filesystem mountpoint prefix.

The following variables are available as both sysctl(8) variables and loader(8) tunables:
vfs.autofs.debug
Verbosity level for log messages from the autofs driver. Set to 0 to disable logging or 1 to warn about potential problems. Larger values enable debugging output. Defaults to 1.
vfs.autofs.interruptible
Set to 1 to allow mount requests to be interrupted by signal. Defaults to 1.
vfs.autofs.retry_delay
Number of seconds before retrying mount requests. Defaults to 1.
vfs.autofs.retry_attempts
Number of attempts before failing mount. Defaults to 3.
vfs.autofs.cache
Number of seconds to wait before reinvoking automountd(8) for any given file or directory. Defaults to 600.
vfs.autofs.timeout
Number of seconds to wait for automountd(8) to handle the mount request. Defaults to 30.
vfs.autofs.mount_on_stat
Set to 1 to trigger mount on stat(2) on mountpoint. Defaults to 0.

To unmount all mounted autofs filesystems:
umount -At autofs
To mount autofs filesystems specified in auto_master(5):
automount

auto_master(5), automount(8), automountd(8), autounmountd(8)

The autofs driver first appeared in FreeBSD 10.1.

The autofs was developed by Edward Tomasz Napierala <trasz@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
December 2, 2017 FreeBSD 12.0-RELEASE

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