Oh and another point of info is that this comes back correct on the server that 
the library is connected to physically:

[root@nas1 bacula]# mtx -f /dev/sg3 status
  Storage Changer /dev/sg3:1 Drives, 24 Slots ( 1 Import/Export )
Data Transfer Element 0:Full (Storage Element 23 Loaded):VolumeTag = 000109L4
      Storage Element 1:Full :VolumeTag=000126L4
      Storage Element 2:Full :VolumeTag=000129L4
      Storage Element 3:Full :VolumeTag=000132L4
      Storage Element 4:Full :VolumeTag=000122L4
      Storage Element 5:Full :VolumeTag=000125L4
      Storage Element 6:Full :VolumeTag=000128L4
      Storage Element 7:Full :VolumeTag=000131L4
      Storage Element 8:Full :VolumeTag=000121L4
      Storage Element 9:Full :VolumeTag=000124L4
      Storage Element 10:Full :VolumeTag=000127L4
      Storage Element 11:Full :VolumeTag=000130L4
      Storage Element 12:Empty
      Storage Element 13:Full :VolumeTag=000136L4
      Storage Element 14:Full :VolumeTag=000135L4
      Storage Element 15:Full :VolumeTag=000134L4
      Storage Element 16:Full :VolumeTag=000105L4
      Storage Element 17:Full :VolumeTag=000106L4
      Storage Element 18:Full :VolumeTag=000107L4
      Storage Element 19:Full :VolumeTag=000133L4
      Storage Element 20:Full :VolumeTag=000137L4
      Storage Element 21:Full :VolumeTag=000108L4
      Storage Element 22:Full :VolumeTag=CLNU00L1
      Storage Element 23:Empty
      Storage Element 24 IMPORT/EXPORT:Full :VolumeTag=000123L4

+----------------------------------------------------------------------
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+----------------------------------------------------------------------



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