HSD10 Operation
VAX 4000 Model 108 User Information 4-31
ANALYZE/ERROR_LOG. Refer to the applicable OpenVMS documentation to read this
error log when troubleshooting the HSD10 adapter.
The HSD10 adapter reports three types of device and port error logs:
•
Type 1 error logs report port errors from the HSD10 SCSI driver.
•
Type 2 error logs report SCSI device check conditions.
•
Type 3 error logs report compare errors found during I/O processing.
Each of these error log types is characterized by unique interpretations of longword data
reported in an error log. Each longword in turn is composed of four bytes, arranged as
follows:
LONGWORD1: Byte 3 Byte 2 Byte 1 Byte 0
LONGWORD2: Byte 7 Byte 6 Byte 5 Byte 4
LONGWORD3: Byte 11 Byte 10 Byte 9 Byte 8
LONGWORD4: Byte 15 Byte 14 Byte 13 Byte 12
LONGWORD5: Byte 19 Byte 18 Byte 17 Byte 16
Bytes are typically specified in two-digit hexadecimal values. Byte 0 specifies the error
log type, containing a value of 01, 02, or 03. Once the log type is determined, use the
following tables to interpret the meaning of each byte or byte field. Abbreviations used are
as follows:
LSB = Least Significant Byte or rightmost byte of a 2-byte word
MSB = Most Significant Byte or leftmost byte of a 2-byte word
LSN = Least Significant Nibble or rightmost four bits of a byte
MSN = Most Significant Nibble or leftmost four bits of a byte
Table 4-7 Type 1 Error Log Byte Definitions
Byte
Meaning or Value
0
01 (Type 1 Log)
1
Opcode of SCSI command
2
RAIDset Drive Failure:
LSN = Position of failing RAIDset member
MSN = Logical Unit Number of failing RAIDset member
