how to find media id from a backuped filename ?

hi all:
    I was backup some file from my file server a long times ago.now,my tape library slots full,so i want check out some media volume,and keep some other in the tape library,but i don't know how to find that volume.

    For example ,i backup a file ,it's name /home/abc.txt,i forget when i was backuped it.how to find which volume contains this file?