HP StorageWorks Clustered File System 3.1.1 for Linux Installation Guide (May 2006)

Chapter 5: Install FS Option 39
# /etc/init.d/pmxs start
The FS Option installation copies the existing /etc/exports file to
/etc/exports.pre_mxfs and then writes over the original file. You can later
convert this file into an Export Group.
Uninstall FS Option
To uninstall FS Option, run the following commands on each server:
# rpm -e mxfs
# rpm -e mxfs-support
# rpm -e mxfs-patches
NOTE:
The server will need to be rebooted with the kernel that does not
include FS Option.
If an /etc/exports.pre_mxfs file exists, it will be restored back to /etc/exports.