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scsi_extended_sense(9s)
Kernel & Driver Data Structures scsi_extended_sense(9S)
NAME
scsi_extended_sense - SCSI extended sense structure
SYNOPSIS
#include <sys/scsi/scsi.h>
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
DESCRIPTION
The scsi_extended_sense structure for error codes 0x70 (current errors)
and 0x71 (deferred errors) is returned on a successful REQUEST SENSE
command. SCSI-2 compliant targets are required to return at least the
first 18 bytes of this structure. This structure is part of
scsi_device(9S) structure.
STRUCTURE MEMBERS
uchar_t es_valid :1; /* Sense data is valid */
uchar_t es_class :3; /* Error Class- fixed at 0x7 */
uchar_t es_code :4; /* Vendor Unique error code */
uchar_t es_segnum; /* Segment number: for COPY cmd only */
uchar_t es_filmk :1; /* File Mark Detected */
uchar_t es_eom :1; /* End of Media */
uchar_t es_ili :1; /* Incorrect Length Indicator */
uchar_t es_key :4; /* Sense key */
uchar_t es_info_1; /* Information byte 1 */
uchar_t es_info_2; /* Information byte 2 */
uchar_t es_info_3; /* Information byte 3 */
uchar_t es_info_4; /* Information byte 4 */
uchar_t es_add_len; /* Number of additional bytes */
uchar_t es_cmd_info[4]; /* Command specific information */
uchar_t es_add_code; /* Additional Sense Code */
uchar_t es_qual_code; /* Additional Sense Code Qualifier */
uchar_t es_fru_code; /* Field Replaceable Unit Code */
uchar_t es_skey_specific[3]; /* Sense Key Specific information */
es_valid, if set, indicates that the information field contains valid
information.
es_class should be 0x7.
es_code is either 0x0 or 0x1.
es_segnum contains the number of the current segment descriptor if the
REQUEST SENSE command is in response to a COPY, COMPARE, and COPY AND
VERIFY command.
es_filmk, if set, indicates that the current command had read a file
mark or set mark (sequential access devices only).
es_eom, if set, indicates that an end-of-medium condition exists
(sequential access and printer devices only).
es_ili, if set, indicates that the requested logical block length did
not match the logical block length of the data on the medium.
es_key indicates generic information describing an error or exception
condition. The following sense keys are defined:
KEY_NO_SENSE
Indicates that there is no specific sense key information to be
reported.
KEY_RECOVERABLE_ERROR
Indicates that the last command completed successfully with some
recovery action performed by the target.
KEY_NOT_READY
Indicates that the logical unit addressed cannot be accessed.
KEY_MEDIUM_ERROR
Indicates that the command terminated with a non-recovered error
condition that was probably caused by a flaw on the medium or an
error in the recorded data.
KEY_HARDWARE_ERROR
Indicates that the target detected a non-recoverable hardware fail‐
ure while performing the command or during a self test.
KEY_ILLEGAL_REQUEST
Indicates that there was an illegal parameter in the CDB or in the
additional parameters supplied as data for some commands.
KEY_UNIT_ATTENTION
Indicates that the removable medium might have been changed or the
target has been reset.
KEY_WRITE_PROTECT/KEY_DATA_PROTECT
Indicates that a command that reads or writes the medium was
attempted on a block that is protected from this operation.
KEY_BLANK_CHECK
Indicates that a write-once device or a sequential access device
encountered blank medium or format-defined end-of-data indication
while reading or a write-once device encountered a non-blank medium
while writing.
KEY_VENDOR_UNIQUE
This sense key is available for reporting vendor-specific condi‐
tions.
KEY_COPY_ABORTED
Indicates that a COPY, COMPARE, and COPY AND VERIFY command was
aborted.
KEY_ABORTED_COMMAND
Indicates that the target aborted the command.
KEY_EQUAL
Indicates that a SEARCH DATA command has satisfied an equal com‐
parison.
KEY_VOLUME_OVERFLOW
Indicates that a buffered peripheral device has reached the end-of-
partition and data might remain in the buffer that has not been
written to the medium.
KEY_MISCOMPARE
Indicates that the source data did not match the data read from the
medium.
KEY_RESERVE
Indicates that the target is currently reserved by a different ini‐
tiator.
es_info_{1,2,3,4} is device-type or command specific.
es_add_len indicates the number of additional sense bytes to follow.
es_cmd_info contains information that depends on the command that was
executed.
es_add_code (ASC) indicates further information related to the error or
exception condition reported in the sense key field.
es_qual_code (ASCQ) indicates detailed information related to the addi‐
tional sense code.
es_fru_code (FRU) indicates a device-specific mechanism to unit that
has failed.
es_skey_specific is defined when the value of the sense-key specific
valid bit (bit 7) is 1. This field is reserved for sense keys not
defined above.
SEE ALSO
scsi_device(9S)
ANSI Small Computer System Interface-2 (SCSI-2)
Writing Device Drivers in Oracle Solaris 11.4
Oracle Solaris 11.4 30 Aug 1995 scsi_extended_sense(9S)