HP C737990900 - Manual (Page 130)

130 Commands
Returned Sense Data Fields:
Valid 1 Indicates that the information bytes contain valid information as defined in the SCSI
specification.
Error Code 70h Indicates that the error is current, that is, it is associated with the command for which
CHECK CONDITION status has been reported.
71h Indicates that the error is deferred. A deferred error occurs when there is a failure for
an operation that has already been terminated with a GOOD status, or when failure
occurs in “cleanup” activity following an operation that was terminated by BUS
RELEASE . The command for which CHECK CONDITION status was reported is therefore
unlikely to be the cause of the deferred error. It simply gives the drive the opportunity
to report CHECK CONDITION status for an error that already exists.
Segment Number This field is cleared to zero.
Mark 1 The Mark bit is set to 1 if a SPACE , READ or VERIFY command did not complete because
a filemark was read. This bit may only be set if the sense key is NO SENSE .
EOM 1 The End of Medium flag is set if a WRITE or WRITE FILEMARKS command completed in
the early warning area. If no other error occurred, the sense code will be set to NO
SENSE with additional sense of 0002h (EOT). If another error occurred, the sense code
and additional sense will reflect that error. It is also set if BOP is encountered while
spacing over blocks or filemarks in the reverse direction.
ILI 1 Indicates that the requested block length did not match the actual block length. Only
READ and VERIFY can cause this bit to be set.
Sense Key See “Sense Keys” on page 135 for details of sense keys that can be returned.
Information Bytes The Information Bytes field is only valid if the Valid bit is set. It contains residue information
following the failure of either a READ , WRITE , WRITE FILEMARKS or SPACE command. The field
can take a negative value, expressed in twos complement notation. See the description of the
command that failed for the contents of the field.
Additional Sense
Length
0Eh Specifies the number of additional sense bytes to follow and is always set to 0Eh. It is
never truncated to reflect the actual Transfer Length.
Command Specific
Information Bytes
0 Provides additional information specific to the failing command. The field is normally
set to 0.
Additional Sense
Code and Qualifier
These two bytes provide additional information about the cause of the CHECK CONDITION , or
the current tape position when the REQUEST SENSE is unsolicited. See “Additional Sense
Codes” on page 136 .
SKSV 0 The Sense Key Specific Bytes (bytes 15 through 17) are invalid. The C/D, BPV and Bit
pointer fields will be zero. The top byte of the Field Pointer will be zero, and the
bottom byte will contain a product-specific error code.