NAME

autofs —

automounter filesystem

SYNOPSIS

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"

DESCRIPTION

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).

OPTIONS

These options are available when mounting autofs file systems:

master_options: Mount options for all filesystems specified in the map entry.
master_prefix: Filesystem mountpoint prefix.

SYSCTL VARIABLES

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.

EXAMPLES

To unmount all mounted autofs filesystems:

umount -At autofs

To mount autofs filesystems specified in auto_master(5):

automount

HISTORY

The autofs driver first appeared in FreeBSD 10.1.

AUTHORS

The autofs was developed by Edward Tomasz Napierala <trasz@FreeBSD.org> under sponsorship from the FreeBSD Foundation.