StorageWorks HSD05, User Manual

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The meaning of these bytes is summarized in Table 3–4.
Table 3–4 Type 1 Disk Drive Error Log Bytes
Byte Description
0 Indicates the type of error log:
• 01 is a type 1 error log
• 02 is a type 2 error log
1 The hexadecimal number of SCSI command that was being executed
when the error occurred. Refer to the SCSI documentation for a listing of
SCSI commands. In the example, the number 28 indicates that the SCSI
command being executed was a READ EXTENDED.
4 and 5 A hexadecimal number to indicate the type of port error encountered.
Refer to Table 3–2 for a listing of port error codes. In the example, the
error code 800E indicates that the error was a hung bus timeout.
6 through 12 The phase history leading up to the error. The bytes preceding the end
marker ‘‘FF’’ represent the phases that the SCSI bus went through before
encountering the error. Refer to Table 3–3 for a listing of SCSI bus phases.
In the example, the ‘‘01’’ in byte 7 indicates that the error occurred in the
Data In phase.
3.4.2 Type 1 Error Logs for a Tape Drive
A type 1 error log for a tape drive reports information on a SCSI port problem in
a format similar to the following:
MSLG$B_FMTR_SVR 01 FORMATTER SOFTWARE VERSION #1
MSLG$B_FMTR_HVR 01 FORMATTER HARDWARE REVISION #1
TU81 DRIVE EXTENDED SENSE INFORMATION
BYTE1
0C DATA CHECK
BYTE2 80 ILLEGAL CHANNEL COMMAND
BYTE3 02 VELOCITY CHECK
BYTE4 FF BOT
UNRECOVERABLE
ID FAULT
READ DATA CHECK
PE CRC CHECK
AGC FAULT
BYTE5 00 FRMTR CMD CODE = 00(X)
BYTE6 00
BYTE7 00
BYTE8 00
BYTE9 00
BYTE10 00
BYTE11 00
BYTE12 00
BYTE13 00
BYTE14 00
BYTE15 00 DEV COMMAND CODE
BYTE16 00 DEV MARGINAL CONDITION CODE
The first byte in the stack identifies the type of error log that follows. In the
example, the first byte is ‘‘01’’, indicating a type 1 error log.
The second byte is the code for the SCSI command that was being executed
when the error occurred. Refer to the SCSI documentation for a listing of
command numbers. In the example, the code ‘‘01’’ indicates a SCSI REZERO
UNIT command.
3–20 Operating the HSD05 Array Controller