tape_34xx.2caadc <bus ID of the tape device>: I/O error recovery failed on the tape control unit
Explanation
An I/O error occurred that cannot be recovered by the automatic error
recovery process of the tape control unit. The application that operates
the tape unit will receive a return value of -EIO which indicates an
I/O error. The data on the tape might be damaged.
User response
If this problem occurred during a write-type operation, consider
repositioning the tape and repeating the operation.