Minidisk defragger?

[Adam Thornton]

I find, after using DIRMAINT for a long time, that I actually have  
quite a lot of free DASD, but it's carved up into little islands  
scattered around my volumes.  If I could consolidate those gaps into  
fewer, larger gaps, I'd be in much better space for allocating disks  
for Linux guests.

Is there a zero-cost tool that will do this defragmentation for me?   
I mean, in essence it's a pretty simple tool: look at your list of  
free cylinders, do some sort of best-fit pass to associate minidisks  
with gaps, and then use DDR to copy them from one to the other.   
Having done that, touch up the MDISK definitions in DIRM, and Bob's  
yer uncle.

Has anyone done this (3390 minidisk is all I really require) in  
something that doesn't actually have a licensing fee associated with it?

Adam