275  * Handle data overrun between cu and drive. The channel speed might
299 		 * cu detected incorrect block-id sequence on tape.  in tape_34xx_erp_sequence()
421 				// cu-recovery, so this should *never* happen.  in tape_34xx_unit_check()
425 			/* data check is permanent, CU recovery has failed */  in tape_34xx_unit_check()
435 				// cu-recovery, so this should *never* happen.  in tape_34xx_unit_check()
439 			// data check is permanent, cu-recovery has failed  in tape_34xx_unit_check()
484 		 * Data streaming not operational. CU will switch to  in tape_34xx_unit_check()
516 		 * subsystem func is issued and the CU is not on-line.  in tape_34xx_unit_check()
539 		 * Permanent equipment check. CU has tried recovery, but  in tape_34xx_unit_check()
590 		 * - cu cannot recover from a drive detected error  in tape_34xx_unit_check()
682 		/* Volume fenced. CU reports volume integrity is lost. */  in tape_34xx_unit_check()
702 		 * CU and drive incompatible. The drive requests micro-program  in tape_34xx_unit_check()
703 		 * patches, which are not available on the CU.  in tape_34xx_unit_check()
710 		 * Recovered Check-One failure. Cu develops a hardware error,  in tape_34xx_unit_check()
739 		 * Read buffered log (Overflow). CU is running in extended  in tape_34xx_unit_check()
748 		 * CU is in extended buffered log mode. This should never  in tape_34xx_unit_check()