As you know JFS file system doesn't keep names of removed files.
How to name unerased files? We strongly recommend use special script (setln.cmd) and save current name of every file to its own .LONGNAME EA. JUne (JFS unerase utility) will automatically investigate the .LONGNAME attribute and restore files with original names.
Run the script periodically for all files in specifiled directory and subdirectories.
http://ecomstation.ru/jrescuer
Source: OS2VOICE