NFS Services Administrator's Guide (B.11.31.04) March 2009

mount-options
Options that apply to the maps specified by map-name.
If the first field specifies the directory as /-, then the second field is the name of the
direct map. The master map file, like any other map file, may be distributed by NIS or
LDAP by modifying the appropriate configuration files and removing any existing
/etc/auto_master master map file.
NOTE: If the same mount-point is used in two entries, the first entry is used by the
automount command. The second entry is ignored.
You must run the automount command after you modify the master map or a direct
map.
Following is a sample auto_master file:
# Master map for AutoFS
#
#auto_master
#mount-point map-name [mount-options]
/net -hosts -nosuid,nobrowse #Special Map
/home auto_home -nobrowse #Indirect Map
/- /etc/auto_direct #Direct Map
/nfs /etc/auto_indirect #Indirect Map
The master map is a primary map that defines all other maps. In this sample,
auto_master, the master map, contains a single entry each for a direct map and a
special map. It also contains a single entry for each top-level indirect map.
Deciding Between Direct and Indirect Automounts
Before you automount a remote directory, you must decide if you want to use a direct
or indirect AutoFS map.
Table 3-4 lists the advantages and disadvantages of direct and indirect AutoFS maps.
Table 3-4 Direct Versus Indirect AutoFS Map Types
Indirect MapDirect Map
Advantage: AutoFS enables you to view the available
mount-points for indirect maps without actually
mounting each filesystem when browsability is
enabled by default.
Advantage: You can view the contents of a
direct-mounted directory using the ls command.
If the contents are not currently mounted, the ls
command mounts them.
Disadvantage: An indirect map hides any local,
standard-mounted, or direct-mounted files or
directories under the mount-point for the map.
Advantage: Direct-mounted automounted directories
can export the same parent directory with local, or
standard-mounted files and directories.
80 Configuring and Administering AutoFS