This section provides detailed information on how to mount
a remote directory using both the direct and indirect AutoFS maps.
Using
a Direct AutoFS Map |
 |
To mount a remote directory using a direct AutoFS map, perform
the following steps:
If you are using local files for your AutoFS maps, use an
editor to open or create a direct map in the /etc directory. The direct map is commonly called /etc/auto_direct. Add a line to the direct map with the following
syntax:
local_directory [mount_options] server:remote_directory |
For CIFS file system mount entries in AutoFS direct map files,
set the mount option for the fstype file
system type to cifs. The remote server
must be a CIFS server, and the remote directory must be a CIFS share.
If you are using NIS to manage your AutoFS maps, add the line
to the direct map on the NIS master server. See the “Configuring
and Administering NIS” chapter of NFS Services
Administrator’s Guide.
If you are using local files for your AutoFS maps,
use an editor to open or create the AutoFS master map in the /etc directory. You need to name the master map as /etc/auto_master. If you are using NIS, open the master
map on the NIS master server.
If the direct map you just modified is not listed in the AutoFS
master map, add the following line to the master map:
/- direct_map_name [mount_options] |
If you are using NIS to manage your AutoFS maps,
issue the following commands on the NIS master server to rebuild
the maps, and push them to the slave servers:
cd /var/yp
/usr/ccs/bin/make auto_master auto_direct |
On each host that will use the map you have modified,
issue the following command to force AutoFS to read the modified
map:
The local directory that you configure as the mount point
should be empty or non-existent. AutoFS creates the non-existent
directories between the root directory and the configured mount
point. If the local directory that you configured as the mount point
is not empty, the local files or directories in it are hidden and
inaccessible while the automounted file system is mounted over it.
The mount options that you can specify in the AutoFS maps
are the same ones that you use for the type of file system you attempt
to automount. For more information on the mount options, see the “Changing
the Default Mount Options” section of NFS Services
Administrator’s Guide. You cannot use the bg option for an automounted
directory. The mount options configured in the direct map override
the options in the master map if there is a conflict.
You can configure all your direct automounts in the same map.
Many users use the file name, /etc/auto_direct, for their direct map. If you plan to use NIS
to manage your AutoFS maps, you can have only one direct map in
your configuration. If you plan to use NIS to manage your AutoFS
maps, and your file system does not allow file names longer than 14
characters, restrict the map name to 10 characters or fewer.
If the direct map name in the AutoFS master map begins with
a slash (/), it is a local file for AutoFS. If the direct map does
not contain a slash, AutoFS uses the Name Service Switch to
determine whether it is a file or an NIS map. See the “Configuring
the Name Service Switch” chapter of NFS Services
Administrator’s Guide.
Before you can mount a remote directory on your system, ensure
that you configure the remote system where the directory is located
as an NFS server. In addition, ensure that you export the directory.
You must enable AutoFS before any directory is automounted. Automounted
directories stay mounted until they are idle for 10 minutes. You
can change the 10-minute default time by adding the -t duration option to the AUTOMOUNT_OPTIONS variable in the /etc/rc.config.d/nfsconf file or by running the automount command with
the -t option from the command
line.
If you change the mount options, the remote server name, or
the remote directory name for an existing direct mount, while AutoFS
is running, the changes you made will take effect the next time
the directory is mounted. However, if you change the local directory
name in the direct map, or if you change the master map, these changes
will not take effect until you issue the automount command to force AutoFS to reread its maps.
For more information on AutoFS configuration, see the automount(1M) man page.
Sample
File Entries for NFS Direct Automounts
The following example contains sample lines from an AutoFS
direct map on the NFS client, sage. The sharp sign (#) indicates a comment line.
# /etc/auto_direct file
# local mount point mount options remote server:directory
/auto/project/specs -nosuid thyme:/export/project/specs
/auto/project/budget -nosuid basil:/export/FY94/proj1 |
The following example contains sample lines from the AutoFS
master map on the NFS client, sage.
# /etc/auto_master file
# local mount point map name mount options
/- /etc/auto_direct |
Figure 3-6 “Example
of Direct Mounts” illustrates how
AutoFS sets up the direct mounts for this configuration.
Using
an Indirect AutoFS Map |
|
To mount a remote directory using an indirect AutoFS map,
perform the following steps:
If you are using local files for your AutoFS maps, use an
editor to open or create an indirect map in the /etc directory. Add a line with the following syntax
to the indirect map:
local_subdirectory [mount_options] server:remote_directory |
For CIFS file system mount entries in AutoFS indirect map
files, you must set the mount option for the fstype file
system type to cifs.The remote
server must be a CIFS server, and the remote directory must be a
CIFS share.
If you are using NIS to manage your AutoFS maps, add the line
to an indirect map on the NIS master server. See the "Configuring
and Administering NIS" chapter of NFS Services Administrator’s
Guide.
If you are using local files for your AutoFS maps,
use an editor to open or create the AutoFS master map in the /etc directory. You need to name the master map as /etc/auto_master. If you are using NIS,
open the master map on the NIS master server.
If the indirect map you modified is not listed in the AutoFS
master map, add the following line to the master map:
local_parent_directory indirect_map_name [mount_options] |
If you are using NIS to manage your AutoFS maps,
issue the following commands on the NIS master server to rebuild
the maps, and push them to the slave servers:
cd /var/yp
/usr/ccs/bin/make auto_master indirect_mapname |
If you modified the AutoFS master map, issue the
following command on each host that will use the map. This forces
AutoFS to read the modified master map:
The local_subdirectory specified in the indirect map is the deepest subdirectory
in the local directory path name. For example, if you were mounting
a remote directory on /nfs/apps/draw, the local_subdirectory specified in the indirect map is draw.
The local_parent_directory specified in the master map is all but the deepest
subdirectory in the local directory path name. For example, if you
were mounting a remote directory on /nfs/apps/draw, the local_parent_directory specified in the master map is /nfs/apps.
The local_parent_directory and local_subdirectory should not exist; AutoFS creates them when it
mounts the remote directory. If the local_parent_directory or local_subdirectory contains files or directories, they are hidden
beneath the remote directory when it is mounted.
The mount options that you can specify in the AutoFS maps
are the same ones that you use for the type of filesystem you attempt
to automount. For a list of mount options, see the “Changing
the Default Mount Options” section of NFS Services
Administrator’s Guide. You cannot use the bg option for an automounted
directory. The mount options configured in the indirect map override
the ones in the master map if there is a conflict.
You can configure indirect automounts in the same indirect
map only if their local_parent_directory, as specified in the AutoFS master map, is the
same. For example, you can configure indirect mounts with the local
mount points, /nfs/apps/draw and /nfs/apps/word, in the same indirect map.
Indirect maps are usually called /etc/auto_name, where name helps you in identifying what is configured in
the map. If you plan to use NIS to manage your AutoFS maps, and
if your file system does not support file names longer than 14 characters,
restrict your indirect map names to 10 characters or fewer.
If the indirect map name in the AutoFS master map begins with
a slash (/), then it is a local file for AutoFS. If it does not
contain a slash, AutoFS uses the Name Service Switch to
determine whether it is a file or an NIS map. See “Configuring
the Name Service Switch” chapter of NFS Services
Administrator’s Guide.
Before you can mount a remote directory on your system, ensure
to configure the remote system where the directory is located as
an NFS server. In addition, make sure to export the directory.
Automounted directories stay mounted until they are idle for
ten minutes. You can change the ten-minute default time by adding
the -t duration option to the AUTOMOUNT_OPTIONS variable in the /etc/rc.config.d/nfsconf file or by running the automount command with
the -t option from the command
line.
You must enable AutoFS before any directory is automounted.
See “Enabling
Enhanced AutoFS”.
If AutoFS is already running when you add an indirect mount
to your configuration, you do not have to run the automount command unless you change the master map. The
changes you make to an existing indirect map take effect when AutoFS
mounts the directory the next time. However, changes to the master
map will not take effect until you issue the automount command to force AutoFS to reread its maps.
For more information on the AutoFS configuration, see the automount(1M) man page.
Sample
File Entries for NFS Indirect Automounts
The following example contains sample lines from an AutoFS
indirect map on the NFS client, sage. The sharp sign (#) indicates a comment. AutoFS
ignores everything from the sharp sign to the end of the line.
# /etc/auto_desktop file
# local mount point mount options remote server:directory
draw -nosuid thyme:/export/apps/draw
write -nosuid basil:/export/write |
The following example contains sample lines from the AutoFS
master map on the NFS client, sage. The master map also includes an entry for the
direct map, /etc/auto_direct.
# /etc/auto_master file
# local mount point map name mount options
/- /etc/auto_direct
/nfs/desktop /etc/auto_desktop |
Figure 3-7 “Example
of Indirect Mounts” illustrates how
AutoFS sets up the indirect mounts for this configuration.
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