AIX Version 4.3 Differences Guide

The command uses default values for the various resource thresholds of the
cache object. If you want to alter these, you should create the cache object
using SMIT with the cachefs_admin_create fastpath.
3. Mount the remote filesystem from the server as a cacheFS filesystem type,
specifying the cache object to use for backing store and the name of the
mount point that will be used to access the filesystem.
mount -V cachefs -o backfstype=nfs,cachedir=/cachefs/cachedir
aix4xdev:/images /images
The result of the action can be checked using the mount command with no
arguments to list all mounted filesystems. Three new entries are present. The first
entry is for the JFS used to store the cache object. The second shows the remote
filesystem mounted onto the cache object as an NFS mount. The remote
filesystem should not be accessed through this mount point. The third new
filesystem mount shows /images as a CacheFS mount on the cache object.
Figure 44 shows the mount output of a CacheFS enabled system.
Figure 44. Output of mount Command Showing CacheFS
7.14.2 AutoFS (4.3.1)
AutoFS is the component of ONC+ that provides automatic mounting of NFS file
systems. The automounting file system, autofs, mounts file systems when access
is requested and unmounts the file system after a few minutes of inactivity, thus
saving the network overhead traffic required to maintain the NFS connection.
AutoFS allows you to break the connection when the file system is not being used
and restart it again automatically when access is next desired.
7.14.2.1 How AutoFS Works
AutoFS is a client-side service. It is implemented using three components to
accomplish automatic mounts. The components are:
• The automount command
• The autofs kernel extension
• The automountd daemon
Networking Enhancements 187