Product data

ATTO Technology, Inc. ATTO FibreBridge Software Manual
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30
ATTO Technology, Inc.
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (A0h)
1 Reserved
2 Reserved
3 Reserved
4 Reserved
5 Reserved
6 (MSB)
7
8
9
Allocation length
(LSB)
10 Reserved
11 Control
The Allocation length shall be at least 16 bytes. If the Allocation length is less than 16 bytes, the ATTO
FibreBridge will return a CHECK CONDITION status. The sense key will be set to ILLEGAL REQUEST
and the additional sense data will be set to INVALID FIELD IN CDB.
If the Allocation length is not sufficient to contain the logical unit number values for all configured logical
units, the ATTO FibreBridge will report as many logical unit number values as will fit in the specified
Allocation length. This will not be considered an error.
The ATTO FibreBridge will report the logical unit numbers of configured logical units using the format
shown below.
REPORT LUNS parameter list format
Bit
Byte
7 6 5 4 3 2 1 0
0 (MSB)
3
LUN list length (n-7)
(LSB)
4 (MSB)
7
Reserved
(LSB)
LUN list
8 (MSB)
15
First LUN
(LSB)
::
::
n-7 (MSB)
N
Last LUN
(LSB)
The LUN list length will contain the length in bytes of the LUN list that is available to be transferred. The
LUN list length is the number of logical unit numbers reported multiplied by eight. If the allocation length in
the command descriptor block is too small to transfer information about all configured logical units, the
LUN list length value will not be adjusted to reflect the truncation.