Well, to find which tape has the image of a backup could be done with either 
bpimagelist 

or

bpimmedia

If you have the media id, I'd use bpimmedia.

to find all full tapes in library, try downloading my tape_rotation script from 
http://www.NetBackupCentral.com, it has the logic you are looking for.  With 
some slight modifications you should be able to mold it to your environments 
needs.

David

Quoting "Li, Jackie (Yanhui)" <YLi AT ea DOT com>:

> 
> We just setup the netbackup enviroment , I have two questions regarding
> backup
> 
> 1) How do you find which tape has the image of  a backup made some time ago
> ?
> 2) How do you find all the tape which  is full in a library? I know
> available_media, but that show all the
> volumes you have, this command take a long time if  you have a lot of
> media,
> I only want ot see full media in  library.
> 
> Thanks
> Jackie
> 
> 
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>