Autofs controls the operation of the automount daemons. The automount daemons automatically mount filesystems when they are accessed and unmount them after a period of inactivity. This is done based on a set of pre-configured maps.
This package is known to build and work properly using an LFS-7.5 platform.
Download MD5 sum: 4c34cacea07db3681b0da1befa229ec4
Download size: 284 KB
Estimated disk space required: 9.7 MB
Estimated build time: 0.1 SBU
Verify that automounter kernel support has been enabled:
File systems ---> Kernel automounter version 4 support (also supports v3): Y or M
Optionally, enable the following options in the kernel configuration:
File systems ---> Network File Systems ---> NFS client support: Y or M CIFS support (advanced network filesystem, SMBFS successor): Y or M
Recompile and install the new kernel, if necessary.
Install Autofs by running the following commands:
sed -i -e '/include.*config.h/ i #include <stdarg.h>' lib/defaults.c && ./configure --prefix=/ \ --without-openldap \ --mandir=/usr/share/man && make
This package does not come with a test suite.
Now, as the
sed ... lib/defaults.c: Fix a build problem with current headers.
--with-libtirpc: This switch enables
libtirpc support if available.
--without-openldap: This switch
disables openldap if found. If openldap is desired, omit this
switch. Note that openldap support in autofs requires MIT Kerberos V5-1.12.2.
The installation process creates
auto.net. Replace the
auto.master file with the following commands as
mv /etc/auto.master /etc/auto.master.bak && cat > /etc/auto.master << "EOF"
# Begin /etc/auto.master /media/auto /etc/auto.misc --ghost #/home /etc/auto.home # End /etc/auto.masterEOF
This file creates a new media directory,
/media/auto that will overlay any existing
directory of the same name. In this example, the file,
/etc/auto.misc, has a line:
cd -fstype=iso9660,ro,nosuid,nodev :/dev/cdrom
that will mount a cdrom as
/media/auto/cd if that directory is accessed.
--ghost option tells the
automounter to create “ghost” versions (i.e. empty directories) of
all the mount points listed in the configuration file regardless
whether any of the file systems are actually mounted or not. This
is very convenient and highly recommended, because it will show
you the available auto-mountable file systems as existing
directories, even when their file systems aren't currently
mounted. Without the
you'll have to remember the names of the directories. As soon as
you try to access one of them, the directory will be created and
the file system will be mounted. When the file system gets
unmounted again, the directory is destroyed too, unless the
--ghost option was given.
An alternative method would be to specify another automount
location such as
/var/lib/auto/cdrom and create a symbolic
/media/cdrom to the
auto.misc file must be
configured to your working hardware. The loaded configuration
file should load your cdrom if
/dev/cdrom is active or it can be edited to
match your device setup. Examples for floppies are available in
the file and easily activated. Documentation for this file is
available using the man 5
In the second line, if enabled, a user's home directory would be
mounted via NFS upon login. The
/etc/home.auto would need to exist and have an
entry similar to:
where the directory
/export/home/joe is exported via NFS from the
system example.org. NFS shares are covered on the next page.
This package could also be used to mount SMB shares, however that feature is not configured in these instructions. For additional configuration information, see the man pages for auto.master(5). There are also web resources such as this AUTOFS HOWTO available.
autofs installs its own boot script, but it has no capability for logging or visual conformance with other BLFS scripts.
mount script included with the blfs-bootscripts-20140810 package.
The time-out variable is set in
/etc/sysconfig/autofs.conf. The installed file
sets a default of 60 seconds of inactivity before unmounting the
device. A much shorter time may be necessary to protect buffer
writing to a floppy if users tend to remove the media prior to
the timeout setting.
Last updated on 2014-06-10 20:27:21 +0000