Data usage profiling by local storage device

• US 10,289,349 B2
• Filed: 03/31/2008
• Issued: 05/14/2019
• Est. Priority Date: 01/02/2008
• Status: Active Grant

• Current Assignee: Western Digital Israel Limited (Western Digital Corporation)
• Original Assignee: SanDisk IL Ltd. (Western Digital Corporation)
• Inventors: Nochimowski, Alain, Rave, Micha, Pomerantz, Itzhak, Mardiks, Eitan
• Primary Examiner(s): Rones, Charles
• Assistant Examiner(s): Dare, Ryan
• Application Number:
  US12/059,107
• Publication Number:
  US 20090172275A1
• Time in Patent Office: 4,061 Days
• Field of Search: None
• CPC Class Codes: G06F 12/0246 in block erasable memory, e.g. flash memory
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0655 Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
• CPC Class Codes: G06F 3/0664 at device level, e.g. emulation of a storage device or system
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Abstract

A local storage device (LSD) is provided configured to have a host device (HD) in communication with the LSD. The LSD includes a memory array. The LSD is configured to characterize data access usage of the LSD by at least one program executing on the HD. The LSD is configured to monitor access to the LSD as a result of data access operations by the HD relative to the memory array of the LSD. The LSD is additionally configured to determine characteristics of the monitored access. The LSD is additionally configured to, based on characteristics of the monitored access, determine and store data on the LSD indicative of the characterized monitored access.

Claims

1. A method for a local storage device (LSD) to characterize data access usage of the LSD, wherein the LSD comprises a mass storage memory array and is in communication with a host device (HD), the method comprising the LSD:

monitoring a pattern of commands received at the LSD from the HD as a result of data access operations by the HD relative to the mass storage memory array of the LSD and monitoring data accessed during the monitored data access operations, wherein such data access operations result in data blocks being provided to or from the mass storage memory array;

detecting metadata in content of the data accessed during the monitored data access operations that is indicative of a file type associated with the data accessed during the monitored data access operations;

determining characteristics of the monitored pattern of commands and characteristics of the file type;

determining, based on the characteristics of the monitored pattern of commands and the characteristics of the file type, data that characterizes the data access operations;

storing, in a usage area of the LSD, the data that characterizes the data access operations;

processing the data stored in the usage area that characterizes the data access operations; and

modifying operation of the LSD based on the processed data.

2. The method of claim 1, wherein the metadata that is indicative of a file type associated with the data accessed during the monitored data access operations comprises a data tag that is indicative of the file type.

3. The method of claim 1, wherein the data that characterizes the data access operations comprises data indicative of time-dependent characteristics of the data access operations on the mass storage memory array.

4. The method of claim 1, further comprising:

providing, from the LSD to the host device, the data stored on the LSD that characterizes the data access operations.

5. The method of claim 1, further comprising:

providing, from the LSD to a device other than the LSD and the host device, the data stored on the LSD that characterizes the data access operations.

6. The method of claim 1,

wherein modifying operation of the LSD comprises modifying a memory management configuration of the LSD.

7. The method of claim 1, wherein:

the HD includes a host device file system (HDFS); and

the operations by the HD relative to the mass storage memory array of the LSD include HDFS operations.

8. The method of claim 1, wherein the metadata indicates that the data accessed during the monitored data access operations comprises a photograph.

9. The method of claim 1, wherein the metadata indicates that the data accessed during the monitored data access operations comprises a video.

10. A local storage device (LSD) configured for use in a computing system having a host device (HD) in communication with the local storage device (LSD), the LSD comprising:

a mass storage memory array having;

a host data storage area for storing data received from the HD; and

a usage area for storing data generated by the LSD characterizing data access operations by the HD; and

a controller configured to manage data access by the HD to the mass storage memory array through a provision of data blocks to or from the host data storage area of the mass storage memory array, the controller further configured to;

monitor a pattern of commands received at the LSD from the HD as a result of data access operations by the HD relative to the mass storage memory array of the LSD and monitor the data accessed during the monitored data access operations;

detect metadata in content of the data accessed during the monitored data access operations that is indicative of a file type associated with the data accessed during the monitored data access operations;

determine characteristics of the monitored pattern of commands and characteristics of the file type;

determine, based on the characteristics of the monitored pattern of commands and the characteristics of the file type, data that characterizes the data access operations; and

store, in the usage area of the LSD, the data that characterizes the data access operations.

11. The LSD of claim 10, wherein the metadata that is indicative of a file type associated with the data accessed during the monitored data access operations comprises a data tag that is indicative of the file type.

12. The LSD of claim 10, wherein the data that characterizes the data access operations comprises data indicative of time-dependent characteristics of the data access operations.

13. The LSD of claim 10, wherein the controller is further configured to:

provide, from the LSD to the host device, the data stored on the LSD that characterizes the data access operations.

14. The LSD of claim 10, wherein the controller is further configured to:

provide, from the LSD to a device other than the LSD and the host device, the data stored on the LSD that characterizes the data access operations.

15. The LSD of claim 10, wherein the controller is further configured to:

process the data stored on the LSD that characterizes the data access operations; and

modify behavior of the LSD based thereon.

16. The LSD of claim 10, wherein:

the operations by the HD relative to the memory array of the LSD include host device file system (HDFS) operations.

17. The LSD of claim 10, wherein the controller is further configured to:

reconfigure a memory management configuration of the LSD, regarding wear-leveling operations on memory cells in the mass storage memory array of the LSD, based on the data stored in the usage area that characterizes the data access operations.

18. The LSD of claim 10, wherein the controller is further configured to:

reconfigure a memory management configuration of the LSD, regarding pre-fetching operations in the mass storage memory array of the LSD, based on the data stored in the usage area that characterizes the data access operations.

19. The LSD of claim 10, wherein the controller is further configured to communicate, via a communication path outside of a host device file system of the HD, the data stored in the usage area to a device external to the HD.

20. A local storage device (LSD) configured for use in a computing system having a host device (HD) in communication with the local storage device (LSD), the LSD comprising:

a mass storage memory array having;

a first storage region for data received from the HD; and

a second storage region defining an area for storing LSD usage data generated by the LSD; and

a controller configured to manage data access by the HD to the mass storage memory array through a provision of data blocks to or from the mass storage memory array, the controller comprising;

means for monitoring a pattern of commands received at the LSD from the HD as a result of data access operations by the HD;

means for determining a file type associated with the data accessed;

means for determining, based on the monitored pattern of commands and the file type, data that characterizes the data access operations;

means for storing, in the second storage region of the LSD, the data that characterizes the data access operations; and

means for reconfiguring a memory management configuration of the LSD based on the data that characterizes the data access operations.