AUTOFSD(8) BSD System Manager's Manual AUTOFSD(8)NAME
autofsd -- daemon to update autofs mounts on network changes
SYNOPSIS
/usr/libexec/autofsd
DESCRIPTION
autofsd runs automount(8), and then waits for network configuration change events and, when such an event occurs, re-runs automount(8) to
update the mounts to reflect the current automounter maps.
SEE ALSO automount(8), automountd(8), configd(8)Darwin July 13, 2006 Darwin
Check Out this Related Man Page
autofsd(8) System Manager's Manual autofsd(8)NAME
autofsd, autofs - Automatically and transparently mounts and unmounts NFS file systems
SYNOPSIS
/usr/sbin/autofsd [-dv] [-D name=value]
OPTIONS
Enables debugging. When debugging is enabled, the daemon does not disassociate itself from the current tty. Messages that trace autofsd
activity are written to standard output. Logs verbose output. Defines an autofsd environment variable by assigning value to the variable.
DESCRIPTION
The autofsd daemon automatically and transparently mounts and unmounts NFS file systems on an as-needed basis. Like the automount daemon,
it provides another alternative to using the /etc/fstab file for mounting NFS file systems on client machines. However, AutoFS is more
efficient than the automount daemon because it requires less communication between the kernel and the user space daemon.
The autofsd daemon also provides higher availability than the automount daemon. Although autofsd must be running for mounts or unmounts to
be performed, if it is killed or becomes unavailable, exisiting auto-mounted NFS file systems continue to be available.
The autofsd daemon can be started from the command line or from the /sbin/rc3.d/nfs script, which reads the /etc/rc.config.common file.
Once started, it remains dormant until a user attempts to access a directory (or any file or directory in the directory hierarchy) that is
associated with an AutoFS map. The daemon then consults the appropriate map and mounts the NFS file system as specified.
AutoFS maps indicate where to find the file system to be mounted and the mount options to use. The names of the maps are passed to the aut-
ofsd daemon through the autofsmount command. For more information about AutoFS maps and the autofsmount command, see autofsmount(8) and
the Network Administration guide. Also, see sys_attrs_autofs(5) for information on tuning AutoFS.
Note
The autofsmount program reads AutoFS maps at startup. If you make any changes to the maps after startup, you must execute the autofsmount
command again to incorporate the changes.
By default, AutoFS uses UDP transport. If the tcp option is specified in a map, AutoFS attempts to use TCP. If TCP is not available, Aut-
oFS then reverts to UDP.
RESTRICTIONS
There is no support in the autofsd daemon that is analogous to the SIGTERM support in the automount command.
If a file system is locally served, the autofsd daemon creates a symbolic link on the system instead of NFS mounting the directory. If
locally serving the directory would result in a circular link, the daemon selects an external server (if available).
SEE ALSO
Commands: autofsmount(8), automount(8), mount(8)
Others: sys_attrs_autofs(5)
Network Administration
autofsd(8)