My tape use is going up, but nothing is being reclaimed from my copy pool.
I must have done something wrong, but where do I go to look for whatever is
wrong first?
What am I missing?

I can find nothing in the activity log, and even when I do a

        update stg copypool rec=5

and it should recover a lot, nothing happens.  Sometimes the process starts
up, but will sit for hours and nothing gets reclaimed.

Running TSM 4.1.5 on NT, with 3583 library and LTO drives.
It has been working, but stopped earlier this week.

... TIA ... Jack