I've come at orphaned filespaces from a little different angle.
What I do is get a list of filespaces that have not
been backed up in some number of days.  This helps for when filesystems
on nodes get removed and the filespace with active files just sits in tsm .
. . forever.

This sql produces a list of filespaces that have not been backed up in 7
days.

(note_1:  The check for '%ZZRT%' excludes retired nodes - we rename retired
nodes to
a "zzrt_" prefix so they can be easily identified.)

(note_2:  run from within a ksh script on aix)

dsmadmc -se=$tsm -id=$adminid -password=$adminpwd -tab -noc <<EOD
  select -
      node_name, -
      filespace_name, -
      filespace_id, -
      unicode_filespace, -
      cast((current_timestamp-backup_end)days   as decimal(5,0)) -
   from -
      filespaces -
   where -
        node_name not like '%ZZRT%' -
    and cast((current_timestamp-backup_end)days  as decimal(5,0)) \> 7 -
   order by node_name, -
          filespace_id
EOD



I also run this . . .a variation of the above.  It attempts to find
filespaces that have never been backed up.  Same notes from above apply.
I'm not sure where/how these come about, but we seem to get a few.


dsmadmc -se=$tsm -id=$adminid -password=$adminpwd  -tab -noc <<EOD
  select -
      node_name, -
      filespace_name, -
      filespace_id, -
      unicode_filespace, -
      backup_start, -
      backup_end -
   from -
      filespaces -
   where -
        node_name not like '%ZZRT%' -
    and ( backup_start is null -
     or backup_end is null )  -
   order by node_name, -
          filespace_id
EOD


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