HP C737990900 - Manual (Page 62)

62 Commands
LOG SENSE 4Dh
LOG SENSE allows the host to read the drive’s logs. A single log is returned
with each invocation of LOG SENSE .
Pre-Execution Checks:
The Page Code must match one of the supported log page codes. If it does not,
then CHECK CONDITION status is reported. Sense data will be as described in
the Illegal Field Checks.
Command Descriptor Block:
CDB Fields:
Illegal Field Deferred Error Unit Attention
7 6 5 4 3 2 1 0
0 Operation Code (4Dh)
1 Reserved (0) PPC (0) SP (0)
2 PC Page Code
3
Reserved (0)
6
7
(MSB)
Allocation Length
8 (LSB)
9 Control
PC The Page Control field defines the type of log parameter to be returned:
00b Current Threshold Values—any parameters in the log that are counters contain the
maximum value that they can count to.
01b Current Cumulative Values—any parameters in the log that are counters contain their
current counts.
Note: Counts are reset to their default cumulative values (see below) following a power-on,
reset or bus device reset. Media related counts are also reset following a load.
10b Default Threshold Values—same as the Current Threshold Values