>I'm trying to determine the number of tapes that are in the convenience I/O
>station of a 3494 tape library.  I thought that I had found the answer on
>Richard Sims' QuickFacts page:
>
>3494, count of cartridges in    Via Unix command:
>Convenience I/O Station         'mtlib -l /dev/lmcp0 -vqK -s ff10'
>
>However, I'm having trouble getting the mtlib command to produce the
>results that I was looking for.  When I run this command, I always get a
>count of 0 returned, even when we've just ejected tapes and they are still
>in the I/O station.  The same is true if we've just inserted tapes into the
>I/O station, and they are still in the process of being stored in the cells.
>
>Am I missing something?  Is the category "FF10" correct for cartridges in
>the I/O station?  When I query with other categories, I get the results
>that I'm expecting.

Ted - I thought I had tried this in the past, and that it had worked then.
      I just tried it, as you did, and got 0.  It looks like, at least now,
that Category Code FF10 is in effect only during the time that the volume
is being processed to head for the Convenience I/O station.