Resolving an Error in the Tape Library

Resolving an Error in the Tape Library

If the DLT Tape Library receives a SCSI Request Sense command, it returns sense information in the format shown in Figure 59.

        +--------------------------------------------------------------+
        |                             Bit                              |
 -------|--------------------------------------------------------------|
   Byte |  7   |   6   |   5   |   4   |   3   |   2   |   1   |   0   |
 -------|--------------------------------------------------------------|
    00  |                         Error Code                           |
 -------|--------------------------------------------------------------|
    01  |  0   |   0   |   0   |   0   |   0   |   0   |   0   |   0   |
 -------|------|-------|-------|-------|-------------------------------|
    02  |  0   |   0   |   0   |  RSVD |           Sense Key           |
 -------|--------------------------------------------------------------|
    03  |     MSB                                                      |
 -------|                                                              |
    04  |                        Information                           |
 -------|                                                              |
    05  |                           Byte                               |
 -------|                                                              |
    06  |                                                     LSB      |
 -------|--------------------------------------------------------------|
    07  |                Additional Sense Information                  |
 -------|--------------------------------------------------------------|
    08  |     MSB                                                      |
 -------|                                                              |
    09  |                     Command-Specific                         |
 -------|                                                              |
    10  |                       Information                            |
 -------|                                                              |
    11  |                                                     LSB      |
 -------|--------------------------------------------------------------|
    12  |                Additional Sense Code (ASC)                   |
 -------|--------------------------------------------------------------|
    13  |           Additional Sense Code Qualifier (ASCQ)             |
 -------|--------------------------------------------------------------|
    14  |                Field Replaceable Unit Code                   |
 -------|--------------------------------------------------------------|
    15  |SKSV  |                                                       |
 -------|------+                                                       |
    16  |                    Sense-Key Specific                        |
 -------|                                                              |
    17  |                                                              |
 ----------------------------------------------------------------------+

Figure 59. Sense Information for the DLT Tape Library 

To use the error report to resolve an error in the tape library (and not in the DLT7000 tape drive):

1.  Perform one of the following, then go to step 2
   •  For systems that use ADSM applications, at the AIX command line type
       errpt -a -N 1b0 |pg (where 1b0 equals the device that has the error) and press Enter.
      A detailed report displays, similar to the one shown in (below) Figure 60.

   •  For system applications that use the Atape device driver, at the AIX command line
      type errpt -a -N smc0 |pg (where smc0 equals the device that has the error) and press Enter.

2.  Press Enter to scroll through the report.
3.  Locate the SENSE DATA area of the report:
   •  In the byte 02 position, identify the hex value of the sense key.
      In this example, the value is 05.
   •  In the byte 12 position, identify the hex value of the additional sense code (ASC).
      In this example, the ASC value is 3B.
   •  In the byte 13 position, identify the hex value of the additional sense code qualifier (ASCQ).
      In this example, the ASCQ value is 83.
   •  Using the values from the preceding steps, refer to (below) Figure 61.
      and (below) Figure 62 for a description of the error.

 +-----------------------------------------------------------------------------------+
 | LABEL:  ADSM_DD_LOG2                                                              |
 | IDENTIFIER: 5680E405                                                              |
 |                                                                                   |
 | Date/Time:       Fri May 30 10:17:55                                              |
 | Sequence Number: 11256                                                            |
 | Machine Id:      00FFFFFF4C00                                                     |
 | Node Id:         speedrace                                                        |
 | Class:           H                                                                |
 | Type:            PERM                                                             |
 | Resource Name:   Ib0                                                              |
 | Resource Class:  library                                                          |
 | Resource Type:   ADSM-SCSI-LB                                                     |
 | Location:        04-07-00-6,0                                                     |
 |                                                                                   |
 | Description                                                                       |
 | STORAGE SUBSYSTEM FAILURE                                                         |
 |                                                                                   |
 | Probable Causes                                                                   |
 | ATTACHED SCSI TARGET DEVICE                                                       |
 | SCSI ADAPTER                                                                      |
 |                                                                                   |
 | Failure Causes                                                                    |
 | ATTACHED SCSI TARGET DEVICE                                                       |
 | SCSI ADAPTER                                                                      |
 |                                                                                   |
 | Recommended Actions                                                               |
 | RUN DIAGNOSTICS AGAINST THE FAILING DEVICE                                        |
 | CHECK PHYSICAL INSTALLATION                                                       |
 | CHECK FOR CORRECT MICROCODE FIX                                                   |
 | CONTACT APPROPRIATE SERVICE REPRESENTATIVE                                        |
 |                                                                                   |
 | Detail Data                                                                       |
 | COMMAND                                                                           |
 | 0C06 0000 A500 0075 0001 0000 0000                                                |
 |                                                                                   |
 | STATUS CODE                                                                       |
 | 01020000                                                                          |
 | SENSE DATA                                                                        |
 | 7000 0500 0000 OOOA 0000 0000 3B83 0000 0000 0000 0000 0000 0000 0000 0000 0000   |
 | 0000 0000 0000 OOO0 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000   |
 |                                                                                   |
 | ERROR CODE                                                                        |
 |              0                                                                    |
 | RETURN CODE                                                                       |
 |              0                                                                    |
 |                                                                                   |
 | REFERENCE CODE                                                                    |
 | 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000   |
 | 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000                            |
 |                                                                                   |
 +-----------------------------------------------------------------------------------+

Figure 60. Sample Excerpt from the AIX Error Report (errpt) for Tape Library Errors. 
In the Sense Data area of the report, the sense key value is 05. The ASC value is 3B and the ASCQ value is 83. 

Below figure 61 provides the meaning of the sense key values for the tape library and the DLT7000 tape drive.
The sense key is listed in hex form.

Figure 61 Meanrngs of Sense Key for Tape Library and DLT7000 Tape Drive 

Sense Key (Hex)	Meaning
00	No Sense
01	Recovered Error
02	Not Ready
03	Medium Error
04	Hardware Error
05	Illegal Request
06	Unit Attention
07	Data Protected
08	Blank Check
0B	Aborted Command
OD	Volume Overflow
OE	Miscompare

To get a description of the error, determine the hex values of bytes 02 (Sense Key), 12 (ASC), and 13 (ASCO) from the summary report, then locate those values in below Figure 62.

Figure 62. Sense Key Information for the Tape Library 

Sense Key (Hex)	ASC (Hex)	ASCQ (Hex)	Description of Error
02	04	O1	Initialization in progress
02	04	81	Unit off-line
02	04	83	Not ready; front door open
04	08	01	SCSI hardware does not respond
04	15	81	Pick error
04	15	83	Put error
04	15	84	Mechanical problem: Stall while picking from drive
04	3B	82	Cannot close drive door
04	40	82	Flash memory checksum error
04	40	90	Normal force position overflow
04	40	A1	X-axis stuck
04	40	A2	X-axis home failure
04	40	A3	X-axis move time-out
04	40	A4	X-axis controller failure, wrap error
04	40	A7	Motor controller reset failure
04	40	A8	X-axis servo busy bit set
04	40	B1	Rack stuck
04	40	B2	Rack home failure
04	40	B3	Rack move time-out
04	40	B4	Rack controller failure, wrap error
04	40	B6	Rack home with cartridge failure
04	40	B8	Rack servo busy bit set
04	40	C1	Z-axis stuck
04	40	C2	Normal force home failure
04	40	C3	Z-axis move time-out
04	40	C4	Z-axis controller failure wrap error
04	40	C8	Z-axis servo busy bit set
04	40	CA	Read cartridge labels time-out
04	40	E3	Motion control drivers hot
04	44	00	Internal hardware error
04	80	17	Bar code retries exceeded limits
04	84	00	Internal software error
05	1A	00	Parameter list length error
05	20	00	Invalid command operation code
05	21	01	Invalid element address
05	24	00	Invalid field in CDB
05	25	00	Unsupported logical unit
05	26	00	Invalid field in parameter list
05	26	02	Parameter value invalid
05	3B	0D	Medium destination element full
05	3B	0E	Medium source element empty
05	3B	80	User intervention required
05	3B	83	Drive indicates handle is not ready to operate
05	3B	84	Destination drive door is closed
05	3B	85	Destination cannot be cartridge handler
05	3B	86	Source cannot be cartridge handler
05	3B	87	Data cartridge stuck in drive
05	3D	00	Invalid bits in identify message
05	53	02	Medium removal prevented
05	80	03	No source magazine
05	80	04	No destination magazine
05	80	05	No source drive
05	80	06	No destination drive
06	29	00	Power-on reset or bus device reset occurred
06	2A	01	Mode parameters changed
06	3F	01	Microcode has been changed
OB	3F	80	Flash firmware upgrade error: Unable to erase
OB	3F	81	Write firmware, incomplete code data
OB	3F	84	Flash firmware upgrade error: Unable to program
0B	3F	86	firmware upgrade error: Flash checksum error

Please see the LEGAL  -  Trademark notice.
Feel free - send a   for any BUG on this page found - Thank you.