> Tricky one. OK, I must admit I'm not a wizard, but nothing immediate > comes to mind, apart from deleting the filespace for the client node, > and start all over. That will of course delete any valid backup pieces > as well, which is bad, but you could make a new backup manually after > deleting the filespace, and you would have at least one backup again.
There is a less draconian version of this approach. Rename the filespace, let TSM create a new filespace, wait until you have a suitable number of backups in the new filespace, and then delete the renamed filespace.