User Manual

SCSI Commands Reference Manual, Rev. J 270
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
3.70.15 Download application log mode (1Ch)
In this mode the device server transfers data from the application client and stores it in an application log. The format of the
application log data is as specified in table 230.
The MODE SPECIFIC field is reserved.
The BUFFER ID field and BUFFER OFFSET field are ignored in this mode.
Upon successful completion of a WRITE BUFFER command, the information contained in the application client error history
parameter list shall be appended to the application client error history in a format determined by the logical unit.
The PARAMETER LIST LENGTH field specifies the maximum number of bytes that shall be transferred from the Data-Out Buffer to
be stored in the application log. If the PARAMETER LIST LENGTH field specifies a transfer that exceeds the application log’s
capacity, the command shall be terminated with CHECK CONDITION status, with the sense key set to ILLEGAL REQUEST, and the
additional sense code set to INVALID FIELD IN CDB
The device server shall not return an error based on the contents of any of the field values defined in table 230 except:
a) the CLR bit;
b) the ERROR LOCATION LENGTH field; and
c) the APPLICATION CLIENT ERROR HISTORY LENGTH field.
Table 230 Application log data WRITE BUFFER format
Bit
Byte
7 6 5 4 3 2 1 0
0 (MSB)
T10 VENDOR IDENTIFICATION. . .
7 (LSB)
8 (MSB)
ERROR TYPE
9 (LSB)
10 Reserved CLR
11 Reserved
12 (MSB)
TIME STAMP. . .
17 (LSB)
18
Reserved
19
20 Reserved CODE SET
21 ERROR LOCATION FORMAT
22 (MSB)
ERROR LOCATION LENGTH (m-25)
23 (LSB)
24 (MSB)
APPLICATION CLIENT ERROR HISTORY LENGTH (n-m)
25 (LSB)
26 (MSB)
ERROR LOCATION. . .
m (LSB)
m+1
APPLICATION CLIENT ERROR HISTORY. . .
n