System and method for sharing media in a computer network

• US 9,021,213 B2
• Filed: 08/09/2013
• Issued: 04/28/2015
• Est. Priority Date: 04/03/2003
• Status: Expired due to Fees

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: Kottomtharayil, Rajiv, Gokhale, Parag, Prahlad, Anand, Kumar Vijayan, Manoj, Ngo, David, Devassy, Varghese
• Primary Examiner(s): ELMORE, STEPHEN C
• Application Number:
  US13/963,693
• Publication Number:
  US 20140075001A1
• Time in Patent Office: 627 Days
• Field of Search: 711/147, 711/4, 711/118, 711/119, 711/161, 711/162, 711/202, 711/220, 709/219, 709/231, 707/661, 707/668, 707/672, 707/673, 714/6.1, 714/6.3
• US Class Current: 711/147
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 16/2228 Indexing structures
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: G06F 3/0617 in relation to availability
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0635 by changing the path, e.g. traffic rerouting, path reconfiguration
• CPC Class Codes: G06F 3/065 Replication mechanisms
• 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 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

A computerized method for sharing removable storage media in a network, the method comprising associating, in an index entry, a first piece of removable storage media in a first storage device with at least a first storage policy copy and a second storage policy copy; copying, to the first piece of removable storage media, data associated with the first storage policy copy; and copying, to the first piece of removable storage media, data associated with the second storage policy copy.

Claims

1. A system for sharing a media volume in a network, the system comprising:

a first media agent in communication with a media volume, the first media agent copies data associated with one or more storage operations to the media volume, the first media agent stored on a non-transitory storage medium that stores instructions that implement the first media agent when executed by a computer processor;

a second media agent in communication with the media volume, the second media agent copies the data associated with the one or more storage operations to the media volume, the second media agent stored on a non-transitory storage medium that stores instructions that implement the second media agent when executed by one or more computing devices; and

a storage manager in communication with the first media agent and the second media agent, the storage manager stored on a non-transitory storage medium that stores instructions that implement the storage manager when executed by one or more computing devices, the storage manager configured to;

direct the first media agent to enter a deactivation state with respect to the media volume;

direct the second media agent to enter an activated state with respect to the media volume, wherein the second media agent mounts the media volume and creates an access path to the media volume;

update storage to reflect that control of the media volume has shifted from the first media agent to the second media agent; and

store the access path from the second media agent to the media volume.

2. The system of claim 1, wherein the storage manager is configured cause the shift in control in response to a detected failure of the first media agent.

3. The system of claim 1, wherein the storage manager is further configured to identify said first media agent for said deactivation and said second media agent for said activation according to a load balancing algorithm.

4. The system of claim 1, wherein the storage manager is further configured to identify the first media agent for said deactivation and the second media agent for said activation based on a type of network pathway between one or more of the first media agent and the media volume and the second media agent and the media volume.

5. A system for sharing a media volume in a network, the system comprising:

a first media agent in communication with a media volume, the first media agent stored on a non-transitory storage medium that stores instructions that implement the first media agent when executed by one or more computing devices;

a second media agent in communication with the media volume, the second media agent stored on a non-transitory storage medium that stores instructions that implement the second media agent when executed by one or more computing devices; and

a storage manager in communication with the first media agent, and the second media the storage manager stored on a non-transitory storage medium that stores instructions that implement the storage manager when executed by one or more computing devices, the storage manager configured to;

direct the first media agent to enter a deactivation state with respect to the media volume;

direct the second media agent to enter an activated state with respect to the media volume, wherein the second media agent accesses the media volume via an access path to the media volume; and

update storage to reflect that control of the media volume has shifted from the first media agent; and

wherein, the second media agent conducts data associated with a client computing device to the media volume via the access path as part of a data storage operation.

6. The system of claim 5, wherein the storage manager is configured cause the shift in control in response to a detected failure of the first media agent.

7. The system of claim 5, wherein the storage manager is further configured to identify said first media agent for said deactivation and said second media agent for said activation according to a load balancing algorithm.

8. The system of claim 5, wherein the storage manager is further configured to identify the first media agent for said deactivation and the second media agent for said activation based on a type of network pathway between one or more of the first media agent and the media volume and the second media agent and the media volume.

9. The system of claim 5, wherein the first and second media agents execute on different computing devices.

10. The system of claim 5, wherein the media volume is part of a storage area network (SAN).

11. The system of claim 5, wherein the data storage operation comprises a backup operation.

12. The system of claim 5, wherein the data storage operation comprises an archive operation.

13. A method sharing a media volume in a network, the method implemented with non-transitory computer storage comprising instructions which, when executed by one or more computing devices, cause the computer system to perform steps comprising:

storing instructions in a non-transitory computer storage which perform the following acts when executed by one or more computing devices;

directing a first media agent to enter a deactivation state with respect to a media volume, wherein the second media agent accesses the media volume via an access path to the media volume;

directing a second media agent to enter an activation state with respect to the media volume;

updating storage to reflect that control of the media volume has shifted from the first media agent; and

instructing the second media agent to conduct data associated with a client computing device to the media volume via the access path as part of a data storage operation.

14. The method of claim 13, wherein said shifting control is in response to a detected failure of the first media agent.

15. The method of claim 13, further comprising identifying said first media agent for deactivation and said second media agent for activation according to a load balancing algorithm.

16. The method of claim 13, further comprising identifying the first media agent for said deactivation and the second media agent for said activation based on a type of network pathway between one or more of the first media agent and the media volume and the second media agent and the media volume.

17. The method of claim 13, wherein the first and second media management components execute on different computing devices.

18. The method of claim 13, wherein the media volume is part of a storage area network (SAN).

19. The method of claim 13, wherein the second media management component creates an access path to the media volume and the method further comprises delegating management of the access path to the second media management component.

20. The method of claim 13, wherein the data storage operation comprises a backup operation or an archive operation.