Snapshot storage and management system with indexing and user interface

• US 8,898,411 B2
• Filed: 04/29/2013
• Issued: 11/25/2014
• Est. Priority Date: 10/07/2002
• Status: Active Grant

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: Prahlad, Anand, May, Andreas, Lunde, Norman R., Zhou, Lixin, Kumar, Avinash, Ngo, David
• Primary Examiner(s): RUTZ, JARED IAN
• Application Number:
  US13/873,085
• Publication Number:
  US 20130238872A1
• Time in Patent Office: 575 Days
• Field of Search: 711/162, 707/639
• US Class Current: 711/162
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore
• 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 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

A system and method of managing stored data in a storage management system. The storage management system includes a storage manager, a media agent connected to the storage manager, and a primary volume connected to the media agent. Multiple snapshots are taken of the primary volume. The snapshots are indexed by associating respective information with the snapshot. The indexed snapshots are copied to a recovery volume. In this way, browsing features are enabled for the user. The user may view the snapshots in a hierarchical format, and may even view snapshot data in association with the corresponding application. The resultant recovery volume may be used to replace a primary volume.

Claims

1. A method for tracking locations of stored data, the method comprising:

storing, in a memory, data to indicate that a primary volume is no longer identified by a first logical unit number,

wherein the primary volume is stored at a first device identified by the first logical unit number;

storing, in the memory, data to indicate that a recovery volume is no longer identified by a second logical unit number,

wherein the recovery volume is stored at a second device identified by the second logical unit number; and

storing, in the memory, data to indicate that the recovery volume is identified by the first logical unit number,

wherein the recovery volume comprises multiple snapshots of the primary volume,

wherein the recovery volume is usable as the primary volume and data on the primary volume is deleted after the recovery volume is identified by the first logical unit number.

2. The method of claim 1 wherein metadata associated with the primary volume is maintained in association with the first logical unit number.

3. The method of claim 1 wherein input and output to both the recovery and primary volumes is suspended during the storing.

4. The method of claim 1, further comprising:

causing to be displayed at least a first snapshot to a user,

wherein the displayed at least one snapshot includes information associated with the one or more applications that created the data tracked by the first snapshot,

wherein the displayed first snapshot includes at least two of;

a date of creation of the first snapshot, a persistence of the first snapshot, and a logical location of the first snapshot.

5. The method of claim 1, further comprising:

causing to be displayed at least a first snapshot to a user,

wherein displaying the first snapshot includes displaying information associated with the one or more applications that created the data tracked by the first snapshot.

6. The method of claim 1, further comprising:

causing to be displayed at least a first snapshot of the recovery volume to a user via an interface corresponding to the one or more applications that created the data of the primary volume.

7. The method of claim 1, further comprising:

creating a second snapshot of the primary volume of data,

wherein the second snapshot only tracks changes to the primary volume of data after a first snapshot was created; and

selecting the second snapshot as a source of data changed after the first snapshot was created to copy to the recovery volume.

8. The method of claim 1, wherein the recovery volume includes information about one or more applications that created data stored in the primary volume.

9. At least one non-transitory computer-readable storage medium having instructions, which when executed by a processor of a computing device, causes the computing device to perform a method for tracking locations of stored data, the method comprising:

storing, in a memory, data to indicate that a primary volume is no longer identified by a first logical unit number,

wherein the primary volume is stored at a first device identified by the first logical unit number;

storing, in the memory, data to indicate that a recovery volume is no longer identified by a second logical unit number,

wherein the recovery volume is stored at a second device identified by the second logical unit number; and

storing, in the memory, data to indicate that the recovery volume is identified by the first logical unit number,

wherein the recovery volume comprises multiple snapshots of the primary volume, and

wherein the recovery volume is usable as the primary volume after the recovery volume is identified by the first logical unit number, and

wherein identifying the recovery volume by the first logical unit number is unrelated to a failure status of the primary volume.

10. The computer-readable medium of claim 9 wherein the recovery volume includes information about one or more applications that created data stored in the primary volume.

11. The computer-readable medium of claim 9 wherein metadata associated with primary volume is maintained in association with the first logical unit number.

12. The computer-readable medium of claim 9 wherein input and output to both the recovery and primary volumes is suspended during the storing.

13. The computer-readable medium of claim 9, further comprising:

causing to be displayed at least a first snapshot to a user,

wherein the displayed at least one snapshot includes information associated with a particular application that created data tracked by the first snapshot,

wherein the displayed first snapshot includes at least two of;

a date of creation of the first snapshot, a persistence of the first snapshot, and a logical location of the first snapshot.

14. The computer-readable medium of claim 9, further comprising:

causing to be displayed at least a first snapshot to a user,

wherein displaying the first snapshot includes displaying information associated with an application that created data tracked by the first snapshot.

15. The computer-readable medium of claim 9, further comprising:

causing to be displayed at least a first snapshot of the recovery volume to a user via an interface corresponding to at least one application that created the data of the primary volume.

16. The computer-readable medium of claim 9, further comprising:

creating a first snapshot of the primary volume of data, wherein the first snapshot only tracks changes to the primary volume of data after a second snapshot was created; and

selecting the first snapshot as a source of data changed after the second snapshot was created to copy to the recovery volume.

17. A computing system for tracking locations of stored data, comprising:

means for indicating that a primary volume is no longer identified by a first logical unit number,

wherein the primary volume is stored at a first device identified by the first logical unit number;

means for indicating that a recovery volume is no longer identified by a second logical unit number,

wherein the recovery volume is stored at a second device identified by the second logical unit number; and

means for indicating that the recovery volume is identified by the first logical unit number,

wherein the recovery volume comprises multiple snapshots of the primary volume,

wherein the recovery volume is usable as the primary volume after the recovery volume is identified by the first logical unit number, and

wherein identifying the recovery volume by the first logical unit number is unrelated to a failure status of the primary volume.

18. The computing system of claim 17 wherein metadata associated with the primary volume is maintained in association with the first logical unit number.

19. The computing system of claim 17 wherein input and output to both the recovery and primary volumes is suspended during the storing.

20. The computing system of claim 17, further comprising:

means for causing to be displayed at least a first snapshot to a user,

wherein the displayed at least one snapshot includes information associated with the one or more applications that created the data tracked by the first snapshot,

wherein the displayed first snapshot includes at least two of;

a date of creation of the first snapshot, a persistence of the first snapshot, and a logical location of the first snapshot.

21. The computing system of claim 17, wherein the recovery volume includes information about one or more applications that created data stored in the primary volume.