Oracle FS Path Manager (FSPM) uses the Linux device-mapper to provide multipathing services.
FSPM installs extensions to the Linux Multipath daemon that monitor the state of the
Oracle FS System LUNs and determine the appropriate priority of each path. The Multipath daemon presents the
Oracle FS System LUNs as virtual block devices in the Linux
device-mapper framework.
FSPM also provides the
FSPM daemon, which monitors the state of the
device-mapper and communicates with the
Oracle FS System software.
Note: You can use these device-mapper and multipath-tools for many purposes other than managing multipathing for Oracle FS System systems.
FSPM provides installation and start up scripts that automate several of the manual integration and configuration tasks that device-mapper usually requires.