What is JPI
JPI is a software storage pool for combining existing disk that use ext3 or ext4 to be combined storage. This is done by creating links to hashed files from their 'pool' path to their store path.
It is written in php5-cli which is its, only dependency. JPI will work on all nix based systems with php5-cli installed.

Installation
Clone JPI from git
Move 'jpi' to /usr/bin/ and chmod for execute
Start jpi as admin.

# sudo jpi

The setup will ask for the 'pool' path and first 'storePath'

Pool path and all storePaths must be on separate drives.

Usage

jpi -daemon         Start JPI as daemon
jpi -stop           Stop JPI
jpi -restart        Restart JPI as daemon

jpi -add-store-path [/path/to/new/store]    Adds store path to JPI (please back up /etc/jpi/config.json)
jpi -find-missing   attemps to locate missing source files