Federated restore of cluster shared volumes

• US 9,398,092 B1
• Filed: 09/25/2012
• Issued: 07/19/2016
• Est. Priority Date: 09/25/2012
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Yadav, Sunil Kumar, Acharya, Soumen, Ramu, Poornima, Singhal, Upanshu, Ht, Vedavathi
• Primary Examiner(s): Daftuar, Saket K
• Application Number:
  US13/626,743
• Time in Patent Office: 1,393 Days
• Field of Search: 709/201, 709/202, 709/203, 709/204, 709/206, 709/208, 709/223, 709/224, 709/225, 709/226, 709/246, 709/248, 711/161, 711/162, 707/999.102, 707/999.2, 707/999.202, 707/609, 707/790, 707/809, 707/812, 707/999.203, 707/999.1, 715/229, 714/15, 714/16, 714/6.12, 714/6.13, 712/31, 712/32
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0859 by keeping history of different configuration generations or by rolling back to previous configuration versions
• CPC Class Codes: H04L 41/0897 by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
• 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: H04L 67/52 specially adapted for the location of the user terminal

Abstract

A method, system, article of manufacture, and apparatus for restoring workload backups in a clustered environment is discussed. In some embodiments, each node in the environment may be sequentially restored based on a request received from a remote client. Additionally or alternatively, the process may be controlled from an external server.

Claims

1. A method for restoring workloads in a clustered server environment, comprising:

receiving, by a server computer having one or more processors and a non-transitory computer readable medium computer readable program instructions embodied therein, a request to restore a workload from a backup data object, the backup data object being a backup of the workload stored on a cluster shared volume, to the clustered server environment, the cluster server environment comprising a plurality of nodes, each node being capable of hosting the workload;

determining, by the server computer, if the requested workload is active in the clustered server environment, and, if the requested workload is active, identifying a node location of the requested workload;

determining, by the server computer, a restore node from the plurality of nodes in the cluster server environment, wherein the restore node comprises a server;

if the requested workload is active in the clustered server environment and the node location is different from the restore node, deactivating the requested workload at the node location;

designating, by the server computer, the restore node as a coordinating node, wherein the coordinating node manages all of the input/output operations by the plurality of nodes to the cluster shared volume; and

restoring, by the server computer, the requested workload from the backup data object to the restore node, and writing workload data files for the requested workload to the cluster shared volume in the cluster server environment.

2. The method of claim 1, wherein the workload is presently active on the restore node.

3. The method of claim 1, further comprising:

receiving, by the server computer, a specified node; and

designating, by the server computer, the specified node as the restore node.

4. The method of claim 3, further comprising deactivating, at the server, the workload on a second node that is not the specified node.

5. The method of claim 3, further comprising migrating, by the server, the workload from a second node to the specified node when the workload is active on the second node.

6. The method of claim 1, wherein the backup is serialized.

7. The method of claim 1, further comprising:

receiving, by the server computer, a request for a digest of workload configurations from a remote client; and

transmitting, by the server computer, the digest to the client.

8. The method of claim 1, further comprising:

receiving, by the server computer, a request to restore a second workload from a second backup; and

restoring, by the server computer, the second workload from the backup to a second restore node in the cluster server environment.

9. The method of claim 8, wherein restoring the workload and restoring the second workload are sequential.

10. The method of claim 8, wherein the restore node is a coordinating node when the workload is being restored, and the second restore node is the coordinating node when the second workload is restored.

11. The method of claim 8, wherein the restore node and the second restore node are the same node.

12. The method of claim 1, wherein the workload is a virtual machine.

13. The method of claim 1, wherein workload data files are stored in a cluster shared volume.

14. A computer program product comprising a non-transitory computer readable medium having computer readable program instructions embodied therein, the computer-readable program instruction adapted to be executed by one or more processors to implement a method for restoring workloads in a clustered server environment, the method comprising:

receiving a request to restore a workload from a backup data object, the backup data object being a backup of the workload stored on a cluster shared volume, to the clustered server environment comprising a plurality of nodes, each node being capable of hosting the workload;

determining, by the server computer, if the requested workload is active in the clustered server environment, and, if the requested workload is active, identifying a node location of the requested workload;

determining a restore node from the plurality of nodes in the cluster server environment, wherein the restore node comprises a server;

if the requested workload is active in the clustered server environment and the node location is different from the restore node, deactivating the requested workload at the node location;

designating the restore node as a coordinating node, wherein the coordinating node manages all of the input/output operations by the plurality of nodes to the cluster shared volume; and

restoring the requested workload from the backup data object to the restore node, and writing workload data files for the requested workload to the cluster shared volume in the cluster server environment.

15. A system, comprising:

a server cluster comprising a first node and a second node;

a non-transitory storage device comprising a cluster shared volume; and

a processor configured to;

receive a request to restore a workload from a backup data object, the backup data object being a backup of the workload stored on a cluster shared volume, to the clustered server environment comprising a plurality of nodes, each node being capable of hosting the workload;

determine if the requested workload is active in the clustered server environment, and, if the requested workload is active, identify a node location of the requested workload;

determine a restore node from the plurality of nodes in the cluster server environment, wherein the restore node comprises a server;

if the requested workload is active in the clustered server environment and the node location is different from the restore node, deactivate the requested workload at the node location;

designate the restore node as a coordinating node, wherein the coordinating node manages all of the input/output operations by the plurality of nodes to the cluster shared volume; and

restore the requested workload from the backup data object to the restore node, and writing workload data files for the requested workload to the cluster shared volume in the cluster server environment.