System and method for proxying network management protocol commands to enable cluster wide management of data backups

• US 8,886,778 B2
• Filed: 04/29/2005
• Issued: 11/11/2014
• Est. Priority Date: 04/29/2005
• Status: Active Grant

• Current Assignee: NetApp, Inc.
• Original Assignee: NetApp, Inc.
• Inventors: Nedved, E. Rudolph, O'Keefe, Brian
• Primary Examiner(s): MACILWINEN, JOHN MOORE JAIN
• Application Number:
  US11/119,136
• Publication Number:
  US 20060248294A1
• Time in Patent Office: 3,483 Days
• Field of Search: 709/223, 709/202
• US Class Current: 709/223
• CPC Class Codes: G06F 11/1458 Management of the backup or restore process
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: H04L 67/00 Network arrangements or protocols for supporting network services or applications user-to-user messaging H04L51/00; network arrangements, protocols or services for supporting real-time applications in data packet communications networks H04L65/00
• 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 67/133 Protocols for remote procedure calls [RPC]

Abstract

A system and method enables cluster-wide management of backup operations issued by one or more backup managers to nodes of a cluster using a network management protocol, such as NDMP. An NDMP daemon executing on each node is extended to include a processing module and a backup module. The processing module interfaces with a backup manager to interpret the backup operation and, if necessary, forward (proxy) that operation to another NDMP daemon on another node of the cluster for processing in accordance with cluster'"'"'s unified namespace.

Claims

1. A method comprising:

receiving, at a local backup daemon executing on a first node of a cluster of a plurality of nodes, a backup operation from a backup manager, the backup operation directed to a data container previously served by the first node of the cluster, wherein the local backup daemon interfaces with the backup manager to interpret the backup operation;

determining that the first node previously served the data container by querying a volume location database (VLDB) on the first node; and

in response to determining that the first node previously served the data container;

forwarding the backup operation from the local backup daemon to a remote backup daemon executing on a second node of the cluster configured to service the data container, and

performing the backup operation directed to the data container by the remote backup daemon executing on the second node in the cluster, wherein the local backup daemon acts as a proxy between the backup manager and the remote backup daemon by communicating via one or more remote procedure calls to complete the backup operation by the second node in the cluster.

2. The method of claim 1 wherein the data container comprises a volume.

3. The method of claim 1 wherein the data container comprises a file system.

4. The method of claim 1 wherein the backup operation is defined by a network data management protocol.

5. The method of claim 1 further comprising:

forwarding a response from the second node to the first node; and

returning the response from the first node to the backup manager.

6. The method of claim 1 wherein the local backup daemon is a protocol daemon.

7. The method of claim 6 wherein the local backup daemon comprises a processing module configured to process the command.

8. The method of claim 6 wherein the local backup daemon comprises a backup module configured to forward the command to the second node serving the data container.

9. A system configured to process a backup operation to a data container, the system comprising:

a local backup daemon executing on a first node of a cluster, the first node having a processor and a memory, the local backup daemon configured to;

receive, from a backup manager, a backup operation directed to a data container of the cluster,

query a volume location database (VLDB) to determine whether the first node is configured to service the data container,

initiate and execute the backup operation on the data container in response to determining that the first node is configured to service the data container, and

forward the backup operation over a computer network to a remote backup daemon executing on a second node to initiate and execute the backup operation on the data container by the remote backup daemon, in response to determining that the first node is not configured to service the data container, where the first node acts as a proxy between the backup manager and the remote backup daemon by communicating via one or more remote procedure calls to complete the backup operation by the second node.

10. The system of claim 9 wherein the backup operation is associated with a network data management protocol.

11. The system of claim 9 wherein the data container comprises a volume.

12. The system of claim 9 wherein the data container comprises a file system.

13. The system of claim 9 wherein the backup operation comprises a network data management protocol command.

14. The system of claim 9 wherein the local backup daemon further comprises a processing module configured to determine whether the data container is local to and serviced by the first node and further configured to interface with the backup manager.

15. The system of claim 9 wherein the local backup daemon further comprises a backup module configured to forward the backup operation to the remote backup daemon executing on the second node for processing.

16. The system of claim 9 wherein the remote backup daemon further comprises a backup module configured to receive the backup operation from the local backup daemon and to process, in conjunction with a processing module of the remote backup daemon, the backup operation.

17. A non-transitory computer readable medium containing executable program instructions executed by a processor, comprising:

program instructions that receive, from a backup manager and at a local backup daemon executing on a first node of a cluster having a plurality of nodes, a backup operation directed to a data container previously served by the first node of the cluster, wherein the local backup daemon interfaces with the backup manager to interpret the backup operation;

program instructions that determine that the first node previously serviced the data container by querying a volume location database (VLDB) on the first node; and

program instructions that, in response to determining that the first node previously serviced the data container, forward the backup operation from the local backup daemon to a remote backup daemon executing on a second node of the cluster, where the backup operation directed to the data container is performed on the second node in the cluster, wherein the local backup daemon acts as a proxy between the backup manager and the remote backup daemon by communicating via one or more remote procedure calls to complete the backup operation by the second node in the cluster.