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SCSI Sense Codes
Appendix A52
The following example shows a typical SCSI error message:
[+6708 72410001 002a9858 0:7] scsi disk: CHECK CONDITION on disk 0:6:5:0
Read of logical block 509856, count 128
disk sd45a, block 254920, 65536 bytes
Valid = 1, Error code = 0x70
Segment number = 0x00, Filemark = 0, EOM = 0, ILI = 0
Sense key = 0x1, "RECOVERED ERROR"
Information = 0x00 0x07 0xc7 0xe4
[+6709 72410001 002a9a10 0:7] scsi disk: Additional sense length = 0x0a
Command-specific information = 0x00 0x00 0x00 0x00
Additional sense = 0x18, Qualifier = 0x01
Field replaceable unit code = 0xea
SKSV = 1, C/D = 0, BPV = 0, Bit pointer = 0
Field pointer = 0x0003
The status (CHECK CONDITION) and sense key (RECOVERED
ERROR)—shown in bold in the example above—are interpreted for you
in the error message text. Each Additional sense and its corresponding
Qualifier code—shown in bold in the example above—require
interpretation on your part. Use the two codes together to determine the
meaning. In the example above, the Additional sense (0x18) and
Qualifier (0x01) codes together mean “recovered data with error
correction and retries applied.” You can look up the various codes and
keys in the tables on the next pages.