A TAPE ERROR OCCURRED: Could not find a tape to use
In my case problem was in that amtape was unable to change tape.
The symoptome is:
- amtape home-backup show
slot 1: time 20080916051516 label backup-01 slot 2: time 20080917041356 label backup-02 slot 2: time 20080917041356 label backup-02 slot 2: time 20080917041356 label backup-02 slot 2: time 20080917041356 label backup-02 ....
amcheck was repeating tapes/slots too.
The worst thing is that amanda doesn't report any useful error if tape changer (chg-multi in my case) can't load a slot ( amtape home-backup slot 3 doesn't raise any alert in spite of error )
So, in my case I just corrected permissions in changer state-file parent directory (! First look at where your state-file resides, /var/amanda/changer-state may be specific to my setup)
- chown amandabackup /var/amanda