Protocol independent storage discovery and enablement

• US 10,291,709 B2
• Filed: 05/02/2018
• Issued: 05/14/2019
• Est. Priority Date: 02/13/2015
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Astigarraga, Tara, DeRobertis, Christopher V., Dickens, Louie A., Winarski, Daniel J.
• Primary Examiner(s): Springer, James E
• Application Number:
  US15/969,160
• Publication Number:
  US 20180248952A1
• Time in Patent Office: 377 Days
• Field of Search: 709217
• CPC Class Codes: H04L 12/4641 Virtual LANs, VLANs, e.g. virtual private networks [VPN] LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 61/25 of the same type
• 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]

Abstract

A manager node provides discovery, translation, and mapping services for supported Ethernet protocol layers. The manager node discovers other nodes within the cloud environment and issues commands to each of the discovered nodes to obtain storage device specific information associated to storage devices communicatively connected to the discovered nodes. The storage device information obtained may include such things as device function (initiator or target), device model number, device capacity, and available storage (free), etc. When the manager node has gathered the storage device specific information it may create a list of all feasible storage devices that could be utilized within the cloud environment. The manager node may determine which of the discovered storage devices will be enabled. Subsequently, the manager node map may serve as an address translator and/or a gateway between protocols.

Claims

1. A method for Ethernet protocol independent storage device discovery comprising:

emulating, with a manager node, a plurality of undiscovered nodes within a network by broadcasting a plurality of data frames according to respective different Ethernet protocols to each of the plurality of undiscovered nodes, each of the plurality of undiscovered nodes operable within the network according to one Ethernet protocol upon being discovered by the manager node;

discovering one or more nodes, with the manager node, by receiving a reply frame from one or more of the undiscovered nodes;

requesting from the discovered one or more nodes, with the manager node, information associated with one or more storage devices communicatively connected to the discovered one or more nodes; and

determining, with the manager node, whether to enable the one or more storage devices within the network.

2. The method of claim 1, further comprising:

logging, with the manager node, information associated with one or more nodes within a network device map stored within the manager node.

3. The method of claim 1, further comprising:

enabling, with the manager node, the one or more storage devices within the network; and

mapping, with the manager node, the enabled one or more storage devices to an associated discovered one or more nodes, wherein the mapping allows the associated discovered one or more nodes to utilize the enabled one or more storage devices.

4. The method of claim 1, wherein emulating the plurality of nodes further comprises:

emulating a Layer 1 node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN).

5. The method of claim 1, wherein emulating the plurality of nodes further comprises:

emulating a Layer 2.5 node by broadcasting a plurality of frames each comprising a Well Known MAC Address or a Well Known IP Address upon each virtual local area network (VLAN) and upon each SubNet.

6. The method of claim 1, wherein emulating the plurality of nodes further comprises:

emulating a Layer 3 or higher node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN), broadcasting a plurality of packets upon each VLAN and each SubNet each packet comprising a Well Known IP Address or a Well Known Port.

7. The method of claim 1, wherein emulating the plurality of nodes further comprises:

emulating a Fibre Channel storage area network (SAN) node by joining the Fibre Channel fabric and obtaining a domain identifier and sending a Login to non initiator Fibre Channel SAN nodes.

8. The method of claim 1, further comprising:

logging, with the manager node, information associated with one or more storage devices within a network device map stored within the manager node.

9. The method of claim 1, wherein determining whether to enable the one or more storage devices within the network comprises:

receiving an input by a management application interface that indicates whether to enable the storage devices.

10. A computer program product for Ethernet protocol independent storage device discovery, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions readable to cause a manager node to:

emulate a plurality of undiscovered nodes within a network by broadcasting a plurality of data frames according to respective different Ethernet protocols to each of the plurality of undiscovered nodes, each of the plurality of undiscovered nodes operable within the network according to one Ethernet protocol upon being discovered by the manager node;

discover one or more nodes by receiving a reply frame from one or more of the undiscovered nodes;

request from the discovered one or more nodes information associated with one or more storage devices communicatively connected to the discovered one or more nodes; and

determine whether to enable the one or more storage devices within the network.

11. The computer program product of claim 10, wherein the program instructions further cause the manager node to:

log information associated with one or more nodes within a network device map stored within the manager node.

12. The computer program product of claim 10, wherein the program instructions further cause the manager node to:

enable the one or more storage devices within the network; and

map the enabled one or more storage devices to an associated discovered one or more nodes, wherein the mapping allows the associated discovered one or more nodes to utilize the enabled one or more storage devices.

13. The computer program product of claim 10, wherein program instructions for emulating the plurality of nodes further cause the manager node to:

emulate a Layer 1 node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN).

14. The computer program product of claim 10, wherein program instructions for emulating the plurality of nodes further cause the manager node to:

emulate a Layer 2.5 node by broadcasting a plurality of frames each comprising a Well Known MAC Address or a Well Known IP Address upon each virtual local area network (VLAN) and upon each SubNet.

15. The computer program product of claim 10, wherein program instructions for emulating the plurality of nodes further cause the manager node to:

emulate a Layer 3 or higher node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN), broadcasting a plurality of packets upon each VLAN and each SubNet, each packet comprising a Well Known IP Address or a Well Known Port.

16. The computer program product of claim 10, wherein program instructions for emulating the plurality of nodes further cause the manager node to:

emulate a Fibre Channel storage area network (SAN) cloud node by joining the Fibre Channel fabric and obtaining a domain identifier and sending a Login to non initiator Fibre Channel SAN nodes.

17. The computer program product of claim 10, wherein the program instructions further cause the manger node to:

receive an input from a management application interface that indicates whether to enable the storage devices.

18. A data handling network comprising:

a manager node and a plurality of undiscovered nodes communicatively connected to the manager node by a network, each undiscovered node communicatively connected to one or more storage devices and each undiscovered node operable within the network according to one Ethernet protocol upon being discovered by the management node;

wherein the management node emulates the plurality of undiscovered nodes by broadcasting a plurality of data frames according to respective different Ethernet protocols to each of the plurality of undiscovered cloud nodes, discovers one or more of the plurality of undiscovered cloud nodes by receiving a reply frame from one or more of the undiscovered cloud nodes, requests from the discovered one or more nodes information associated with one or more storage devices communicatively connected to the discovered one or more nodes, and determines whether to enable one or more storage devices within the network.

19. The data handling network of claim 18, wherein upon the enablement of the one or more storage devices by the management node, the management node further maps the enabled one or more storage devices to the discovered one or more nodes to allow the discovered one or more nodes to utilize the enabled one or more storage devices as networked storage.

20. The data handling network of claim 18,

wherein the manager node emulates a Layer 1 node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN);

wherein the manager node emulates a Layer 2.5 node by broadcasting a plurality of frames each comprising a Well Known MAC Address or a Well Known IP Address upon each virtual local area network (VLAN) and upon each SubNet;

wherein the manager node emulates a Layer 3 or higher node by broadcasting a plurality of frames each comprising a Well Known MAC Address upon each virtual local area network (VLAN), broadcasting a plurality of packets upon each VLAN and each SubNet each packet comprising a Well Known IP Address or a Well Known Port; and

wherein the manager node emulates a Fibre Channel storage area network (SAN) cloud node by joining the Fibre Channel fabric and obtaining a domain identifier and sending a Login to non initiator Fibre Channel SAN cloud nodes.