Ok, this is to everyone still having trouble with the backupset delete/expire problems.
This is information form Tivoli tech support, so don't shoot the messenger. It is true that this was a bug in TSM 4.1.2, it seems that if you created a backupset and it passed its expiration date, the volume that the set was on could not or would not be able to be reclaimed as scratch. An addition of the delete volhist type=backupset command was added but undocumented in 4.1.3, and the fix was implemented in 4.2 to remedy the problem. The problem I was having was the undocumented feature of delete volhist was returning an unknown volume error when I tried to run it. The solution was as follow from Tivoli tech support: delete volhist type=backupset todate=(the day after the backupset was created) totime=(the same time) volume=(volumename in all CAPS) force=yes The key was the all caps in volume=, (the volume parameter is case sensitive) I omitted the totime and was still successful. Hope this helps.
