Log select 4ch, Pre-execution checks, Command descriptor block – HP Q153090901 User Manual
Page 55: Cdb fields, Log select ch 55
LOG SELECT 4Ch
C
omm
an
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LOG SELECT
4Ch
The
Log Select
command causes log data on the drive to be reset to its default value or to be set to
an initiator specific value.
Pre-execution checks:
Command descriptor block:
CDB fields:
The following are valid combinations of values for the PCR (Parameter Code Reset), Parameter List
Length and PC (Page Control) fields:
Otherwise
CHECK CONDITION
status is returned, the sense key is set to
ILLEGAL REQUEST
with
additional sense of 2400h (Invalid Field in CDB).
Illegal Field
Reservation
Deferred Error
Unit Attention
7
6
5
4
3
2
1
0
0
Operation Code (4Ch)
1
Reserved (0)
PCR
SP (0)
2
PC
Reserved (0)
3
Reserved (0)
6
7
(MSB)
Parameter List Length
8
(LSB)
9
Control
PCR
Parameter List Length
PC
Result
1
0
01b
or
11b All the logs on the drive that can be reset are reset to their
default values.
1
0
00b
or
10b No action is taken and GOOD status is returned.
0
>0
01b
or
11b Data is sent from the host and is written to the indicated
logs, provided those logs are writable.
PCR
0 Parameter Code Reset. The function performed is defined by the PC field.
SP
0 The Save Page (SP) flag is not supported and must be set to 0.