User customizable CVFS namespace

• US 8,145,947 B1
• Filed: 09/29/2006
• Issued: 03/27/2012
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Tang, Hongliang, Hayden, John
• Primary Examiner(s): Baderman, Scott
• Assistant Examiner(s): Ko, Chae
• Application Number:
  US11/537,001
• Time in Patent Office: 2,006 Days
• Field of Search: 714/15, 714/20, 714/16
• US Class Current: 714/20
• CPC Class Codes: G06F 11/1435 using file system or storage system metadata
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore

Abstract

An apparatus and method are described for defining, maintaining and displaying a checkpoint result set to facilitate identification of desirable checkpoints during system recovery. The checkpoint result set may be mapped to a user-customizable namespace. The user customizes the namespace by selecting one or more characteristics of desirable file system checkpoints. Being able to customize the namespace in this manner enables the user to be provided a more streamlined checkpoint result set in the event of data corruption. As a result an appropriate checkpoint can be more quickly selected for use in recovery.

Claims

1. A method of displaying checkpoint information includes the steps of:

identifying one or more characteristics of a checkpoint recovery set, wherein the checkpoint recovery set includes checkpoints of a primary file system;

filtering checkpoints to generate a result set of recovery checkpoints having one or more of the characteristics;

merging the resultant set of recovery checkpoints into a set of virtual directories placed directly within the primary file system; and

upon the occurrence of a trigger event, updating the virtual directories associated with the trigger event.

2. The method of claim 1 further including the step of forwarding the result set of recovery checkpoints to a display user interface.

3. The method of claim 1 wherein the one or more characteristics includes a complex characteristic.

4. The method of claim 1 wherein the one or more characteristics include at least a pair of hierarchically related characteristics.

5. The method of claim 1 wherein the one or more characteristics includes an absolute characteristic.

6. The method of claim 1 wherein the one or more characteristics include a relative characteristic.

7. The method of claim 6 wherein the relative characteristic is a time relative characteristic.

8. The method of claim 6 wherein the relative characteristic is a distance relative characteristic.

9. The method of claim 1 wherein the characteristic includes a variable.

10. The method of claim 9 wherein the variable specifies an offset.

11. The method of claim 9 wherein the variable specifies a range.

12. The method of claim 1 wherein the step of filtering includes the step of comparing each of the checkpoints to the one or more identified characteristics.

13. The method of claim 12 wherein the step of comparing occurs at checkpoint generation.

14. The method of claim 12 wherein the step of comparing occurs at a triggering event.

16. The method of claim 14 wherein the triggering event is a distance relative triggering event.

17. The method of claim 1 wherein a graphic user interface including a mechanism for selecting one or more file system characteristics for use in sorting file system checkpoints is used to identify the one or more characteristics of a checkpoint recovery set.

18. The method of claim 17 wherein the mechanism is a pull-down menu.

19. The method of claim 17 wherein the mechanism includes command line language.

20. The method of claim 1 wherein the set of virtual directories are arranged into a virtual checkpoint hierarchy.

15. The method of 14 wherein the triggering event is a time-relative triggering event.

21. A computer device including computer readable storage having program code stored thereon, the program code including:

filtering code for filtering checkpoints based on user specified characteristics to identify checkpoints that are desirable to the client, wherein the checkpoints are of a primary file system;

generating code for generating a result set of recovery checkpoints having one or more of the characteristics;

merging code for merging the resultant set of recovery checkpoints into a set of virtual directories placed directly within the primary file system; and

upon the occurrence of a trigger event, updating the virtual directories associated with the trigger event.

22. The computer device of claim 21 wherein the filtering code includes code for performing absolute and relative filtering.

23. The computer device of claim 21 wherein the program code includes means for dynamically building a result set of available checkpoints for a directory.

24. The computer device of claim 21 wherein the set of virtual directories are arranged into a virtual checkpoint hierarchy.