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Valid Errors:
Error
Error Code
Bad argument
SCSI Bus Out Parity Check
Adapter Parity Check
SCSI HA/Initiator Detected Error
The AdrVal (Address Valid) bit indicates that the Information
Bytes contain a valid logical block address for which the error
condition was recorded.
The error class indicates the general type of error detected.
Class 0 errors are related to drive state,
including ready, seek
complete, write fault and similar errors.
Class 1 errors are
related to data recovery problems.
Class 2 errors are related to
invalid requests from the host system.
Class 7 is the class
defining SCSI extended sense information.
The error code defines precisely the failure that was detected.
These codes are described in Table 6-2.
The logical block address is either 21 or 32 bits long depending
on the sense format option selected.
It contains the address of
the logical block for which the failure was detected.
If the
AdrVal bit is off, the logical block address is not meaningful.
A few sense error codes store other information in the logical
block address without turning on the AdrVal bit.
Table 6-2.
Class 00 Error Codes In Sense Byte (Drive Errors)
CODE
ERROR
MEANING
00
NO SENSE
No error occurred or
error cleared before
REQUEST SENSE command.
01
NO INDEX/SECTOR
No index or sector signal
found during rd, wr, or format
02
NO SEEK COMPLETE
Seek complete signal missing
03
WRITE FAULT
Drive detected failure
which disallows writes
04
DRIVE NOT READY
Drive not ready
05
SELECTION FAILURE Incorrect Select
indication returned.
500504-00
6-6
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