Critical event log for a disc drive

• US 6,600,614 B2
• Filed: 06/25/2001
• Issued: 07/29/2003
• Est. Priority Date: 09/28/2000
• Status: Expired due to Term

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Herbst, James Arthur, Lenny, Thomas R., Haines, Jonathan William
• Primary Examiner(s): Hudspeth, David
• Assistant Examiner(s): DAVIDSON, DAN
• Application Number:
  US09/891,988
• Publication Number:
  US 20020060868A1
• Time in Patent Office: 764 Days
• Field of Search: 360/31, 360/53, 360/25, 714/42-45, 714/56-57, 714/723, 714/54, 714/718, 714/721, 714/41, 714/719, 702/182-183, 702/185-187
• US Class Current: 360/31
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 20/1816 Testing
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06

Abstract

An apparatus, modules, means, and computer readable media for and a method of logging critical events to a critical event log storage area on a disc in a disc drive are disclosed. The disc drive having a data storage disc is operably connected to a host computer. The data communication between the host computer and the disc drive is established via a disc drive interface. The disc drive interface may be an ATA disc drive interface. A power-on operational status of the disc drive with the host computer is determined. Then a critical event is determined without a host computer intervention. A set of critical events are predefined and stored in the firmware of the disc drive. The critical event can be monitored and logged either during an on-line data collection mode or an off-line data collection mode. During the off-line data collection mode, the firmware performs off-line scan of the disc drive in the background. The determined critical event is logged to the critical event log by reading the critical event log from the critical event log storage area on the disc; appending the determined critical event to the critical event log; and storing the appended critical event log to the critical event log storage area on the disc.

Claims

1. In a disc drive operably connectable to a host computer wherein the disc drive has a data storage disc and a portion of the data storage disc is a critical event log storage area, a method of logging critical events comprising steps of:

(a) determining a power-on operational status of the disc drive with the host computer;

(b) determining an occurrence of a critical event without a host computer intervention, wherein critical event, include predefined information in addition to error event occurrences related to disc drive operations stored in the firmware of the disc drive; and

(c) logging the determined critical event to the critical event log storage area on the disc.

2. The method according to claim 1, wherein the power-on operation determining step (a) comprises a step of:

(a)(i) determining whether a data communication path between the host computer and the disc drive is established via a disc drive interface.

3. The method according to claim 2, wherein the disc drive interface in the data communication determining step (a)(i) is an ATA disc drive interface.

4. The method according to claim 2, wherein a set of the critical events is predefined and stored in the firmware of the disc drive.

5. The method according to claim 4, wherein the critical event determining step (b) further comprises steps of:

(b)(ii) determining an on-line data collection mode; and

(b)(iii) monitoring for occurrence of one of the predefined critical events.

6. The method according to claim 5, wherein the determined critical event logging step (c) comprises steps of:

(c)(i) reading a critical event log from the critical event log storage area on the disc;

(c)(ii) appending the determined critical event to the read critical event log; and

(c)(iii) storing the appended critical event log to the critical event log storage area on the disc.

7. The method according to claim 4, wherein the critical event determining step (b) further comprises steps of:

(b)(iv) monitoring for an off-line data collection mode;

(b)(v) performing an off-line scan of the disc drive upon detecting the off-line data collection mode; and

(b)(vi) monitoring for occurrence of one of the predefined critical events.

8. The method according to claim 7, wherein the determined critical event logging step (c) comprises steps of:

(c)(i) reading a critical event log from the critical event log storage area on the disc;

(c)(ii) appending the determined critical event to the critical event log; and

(c)(iii) storing the appended critical event log to the critical event log storage area on the disc.

9. A computer readable media product readable by a host computer and encoding instructions for executing a method of logging a critical event in a disc drive comprising steps of:

(a) determining a power-on operational status of the disc drive with the host computer;

(b) determining an occurrence of a critical event without a host computer intervention, wherein critical events include predefined information in addition to error occurrences related to disc drive operations stored in firmware in the disc drive; and

(c) logging the determined critical event to a critical event log storage area on the disc.

10. A disc drive operably connectable to a host computer wherein the disc drive has a data storage disc and a portion of the data storage disc is a critical event log storage area, the disc drive comprising:

a critical event logging module;

a disc drive interface providing a data communications path between the disc drive and the host computer; and

firmware for storing the critical event logging module operably connected to the critical event log storage area and the disc drive interface wherein a set of a critical events in addition to error occurrences is predefined and stored in the firmware.

11. The disc drive of claim 10 wherein the disc drive interface is an ATA disc drive interface.

12. The disc drive of claim 10 wherein the critical event logging module comprises:

a disc drive operational status determination module for determining a power-on operational status of the disc drive with the host computer; and

a critical event determination module for determining an occurrence of a critical event without a host computer intervention, wherein the critical event is a predefined information related to disc drive operations,

wherein the critical event logging module stores the determined critical event to the critical event log storage area on the disc.

13. The disc drive of claim 12 wherein the disc drive operational status determination module determines whether the data communication between the host computer and the disc drive is established via the disc drive interface.

14. The disc drive of claim 13, wherein the critical event determination module further monitors for occurrence of one of the predefined critical events during an on-line data collection mode.

15. The disc drive of claim 13, wherein the critical event logging module reads a critical event log from the critical event log storage area on the disc;

appends the determined critical event to the read critical event log; and

stores the appended critical event log to the critical event log storage area on the disc.

16. The disc drive of claim 13, wherein the means for determining a critical event occurrence monitors for an off-line data collection mode, performs an off-line scan of the disc drive upon detecting the off-line data collection mode, and monitors for occurrence of one of the predefined critical events.

17. The disc drive of claim 14, wherein the critical event logging module reads the critical event log from a critical event log storage area on the disc;

appends the determined critical event to the read critical event log; and

stores the appended critical event log to the critical event log storage area on the disc.

18. A disc drive operably connectable to a host computer wherein the disc drive has a data storage disc and a portion of the data storage disc is a critical event log storage area, the disc drive comprising:

a disc drive interface providing a data communication path between the disc drive and the host computer; and

means for logging a critical event in the critical event log storage area on the disc wherein criteria defining the critical event includes events in addition to error occurrences, the criteria being stored in the firmware of the disc drive.

19. The disc drive of claim 18, wherein the disc drive interface is an ATA disc drive interface.

20. The disc drive of claim 18, wherein the means for logging a critical event comprises:

means for determining a disc drive operational status with respect to the host computer;

means for determining a critical event occurrence without host computer intervention, wherein the critical event is predefined information related to disc drive operations; and

means for logging a critical event to the critical event log storage area on the disc.

21. The disc drive of claim 20, wherein the means for determining a disc drive operational status determines whether the power to the host computer is on and whether the data communication between the host computer and the disc drive is established via a disc drive interface.

22. The disc drive of claim 21, wherein a set of the critical events is predefined and stored in the firmware of the disc drive.

23. The disc drive of claim 22, wherein the means for determining a critical event occurrence monitors for occurrence of one of the predefined critical events during an on-line data collection mode.

24. The disc drive of claim 22, wherein the means for logging a critical event reads a critical event log from the critical event log storage area on the disc;

appends the determined critical event to the read critical event log; and

stores the appended critical event log to the critical event log storage area on the disc.

25. The disc drive of claim 22, wherein the means for determining a critical event occurrence monitors for an off-line data collection mode, performs an off-line scan of the disc drive upon detecting the off-line data collection mode, and monitors for occurrence of one of the predefined critical events.

26. The disc drive of claim 23, wherein the means for logging a critical event reads the critical event log from the critical event log storage area on a disc;

appends the determined critical event to the read critical event log; and

stores the appended critical event log to the critical event log storage area on the disc.