PARTIAL RESTORE FROM TAPE BACKUP

• US 20170097872A1
• Filed: 10/19/2016
• Published: 04/06/2017
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Inventors: Venkatasubramanyam, Venkatraman, Pandey, Sonal, Jain, Vaibhav
• Granted Patent: US 10,481,985 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 11/14 Error detection or correction of the data by redundancy in operation G06F11/16 takes precedence
• CPC Class Codes: G06F 11/1435 using file system or storage system metadata
• CPC Class Codes: G06F 11/1438 Restarting or rejuvenating
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 11/1471 involving logging of persistent data for recovery
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data

Abstract

Techniques to restore data from backup are disclosed. In various embodiments, an indication of a subcomponent to be restored from backup is received. View information associated with the backup is used to determine a set of physical components required to be retrieved from the backup to restore the requested subcomponent. The determined set of physical components is retrieved from the backup. The retrieved physical components are used to restore the subcomponent. In various embodiments, the view information includes data that identifies each of a plurality of separately-recoverable subcomponents of the backup and for each one or more physical components comprising the backup which would be required to restore that subcomponent.

Claims

1. A method, comprising:

determining a set of one or more physical components to be obtained from a backup to restore a first component, wherein the set of one or more physical components is determined based at least in part on view information corresponding to the set of one or more physical components and that is associated with the set of one or more physical components during a backup process;

obtaining the determined set of one or more physical components from the backup; and

restoring the first component based at least in part on the obtained set of one or more physical components.

2. The method of claim 1, comprising receiving an indication of the first component to be restored from a backup.

3. The method of claim 2, wherein the indication of the first component to be restored from the backup is received in connection with a partial restoration process.

4. The method of claim 2, wherein the indication is received via a user interface.

5. The method of claim 4, wherein the user interface displays a user-selectable representation of the first component.

6. The method of claim 4, wherein the user interface is provided at least in part by using the view information to determine and display information representing a plurality of components that are individually recoverable.

7. The method of claim 1, wherein the first component is associated with corresponding view information indicating that the first component supports individual restoration.

8. The method of claim 7, wherein to support individual restoration includes to be usable by an application in connection with providing an application-level functionality.

9. The method of claim 1, wherein the first component comprises an application-level logical object of an application with which the backup is associated.

10. The method of claim 1, wherein the view information is created and included in the backup by an application plugin used to create the backup.

11. The method of claim 10, wherein the application plugin is associated with an application, and wherein the application plugin used to create the backup is configured according to one or more of a type or format of information used in the application with which the application plugin is associated.

12. The method of claim 11, wherein the view information created by the application plugin describes one or more partially-recoverable components of the backup.

13. The method of claim 12, wherein the view information is descriptive in a context of the application with which the application plugin is associated.

14. The method of claim 1, further comprising:

receiving an indication to provide a user interface in connection with performing a partial restore;

obtaining the view information; and

providing the user interface based at least in part on the obtained view information.

15. The method of claim 1, wherein the set of one or more physical components is determined based at least in part on a mapping of the set of one or more physical components to the first component.

16. The method of claim 1, wherein the set of one or more physical components include one or more files comprising the backup.

17. The method of claim 16, further comprising using a file index of the backup to locate the one or more files comprising the backup.

18. The method of claim 17, wherein obtaining of the set of one or more physical components comprises:

reading backup data from tape or other media comprising the backup; and

filtering the read backup data to locate the set of one or more physical components.

19. A system, comprising:

a communication interface; and

one or more processors coupled to the communication interface and configured to;

determine a set of one or more physical components to be obtained from a backup to restore a first component, wherein the set of one or more physical components is determined based at least in part on view information corresponding to the set of one or more physical components and that is associated with the set of one or more physical components during a backup process;

obtain the determined set of one or more physical components from the backup; and

restore the first component based at least in part on the obtained set of one or more physical components.

20. A computer program product, the computer program product being embodied in a non-transitory computer-readable storage medium and comprising computer instructions for:

determining a set of one or more physical components to be obtained from a backup to restore a first component, wherein the set of one or more physical components is determined based at least in part on view information corresponding to the set of one or more physical components and that is associated with the set of one or more physical components during a backup process;

obtaining the determined set of one or more physical components from the backup; and

restoring the first component based at least in part on the obtained set of one or more physical components.