/var/log/messages
Feb 19 13:53:00 host1 kernel: st0: Error with sense data: Info fld=0x8000, Current st09:00: sense key Medium Error
Feb 19 13:53:00 host1 kernel: Additional sense indicates Recorded entity not found

Feb 19 13:58:00 host1 kernel: st0: Error with sense data: Info fld=0x8000, Current st09:00: sense key Medium Error
Feb 19 13:58:00 host1 kernel: Additional sense indicates Recorded entity not found