Systems, devices, apparatus, and methods for identifying stored data by a device located in a path between virtual Fibre channel switches and performing a data management service

• US 9,495,113 B2
• Filed: 08/03/2015
• Issued: 11/15/2016
• Est. Priority Date: 12/23/2011
• Status: Active Grant

• Current Assignee: Cirrus Data Solutions, Inc.
• Original Assignee: Cirrus Data Solutions, Inc.
• Inventors: Lam, Wai, Lam, Wayne, Liu, Chang
• Primary Examiner(s): Shin, Christopher
• Application Number:
  US14/816,477
• Publication Number:
  US 20150339078A1
• Time in Patent Office: 470 Days
• Field of Search: 709202-203, 709223-226, 370360-363, 370400-401, 714 42- 43
• US Class Current: 1/1
• CPC Class Codes: G06F 13/102 where the programme performs an interfacing function, e.g. device driver G06F13/105 takes precedence; scheduling within device drivers G06F9/52; contention policies within device drivers G06F9/4881
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0635 by changing the path, e.g. traffic rerouting, path reconfiguration
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• 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 3/0673 Single storage device
• CPC Class Codes: H04L 63/101 Access control lists [ACL]
• 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 first port of a device is connected to a first switch port of a first virtual switch defined within a switch device and a second port of the device is connected to a second switch port of a second virtual switch defined within the switch device. A target world wide port name of a target port of a storage system connected to the second virtual switch is identified by the device. The first port of the device is registered, in a first registration procedure, with the first virtual switch based on the target world wide port name. Registration information relating to an initiator port of a server that is associated with the target port is received in a second registration procedure. An initiator world wide port name of the initiator port of the server is determined based on the registration information. A storage volume in the storage system that is associated with the initiator port is identified based on the initiator world wide port name of the initiator port.

Claims

1. A method of providing data management services, the method comprising:

connecting a first port of a device to a first switch port of a first virtual switch defined within a switch device and a second port of the device to a second switch port of a second virtual switch defined within the switch device;

identifying, by the device, a target world wide port name of a target port of a storage system connected to the second virtual switch;

registering, in a first registration procedure, the first port of the device with the first virtual switch based on the target world wide port name;

receiving, in a second registration procedure, registration information relating to an initiator port of a server that is associated with the target port;

determining an initiator world wide port name of the initiator port of the server, based on the registration information; and

identifying a storage volume in the storage system that is associated with the initiator port, based on the initiator world wide port name of the initiator port.

2. The method of claim 1, further comprising:

assigning the target world wide port name to the first port of the device.

3. The method of claim 1, wherein the second registration procedure comprises registration by the initiator port with the device via the first port.

4. The method of claim 3, further comprising:

receiving, in the second registration procedure, a switch port identifier associated with an initiator port of a server that is zoned to the target port.

5. The method of claim 1, further comprising:

transmitting to the storage system a REPORT LUN command including the initiator world wide port name; and

receiving from the storage system, in response to the REPORT LUN command, information identifying the storage volume to which the initiator world wide port name has access.

6. The method of claim 5, further comprising:

transmitting to the storage system a SCSI inquiry relating to the storage volume to which the initiator world wide port name has access;

receiving, in response to the SCSI inquiry, information indicating a global unique identifier of the storage volume; and

determining whether two storage volumes associated with the initiator world wide port name are identical based on the global unique identifier.

7. The method of claim 1, wherein the switch device is a Fibre channel switch.

8. The method of claim 1, further comprising:

performing a data management service with respect to the identified storage volume, wherein the data management service comprises one of copying data, performing a snapshot of a data image, backing up data, replicating data, and performing data migration.

9. The method of claim 1, wherein the server is connected to the first virtual switch.

10. The method of claim 1, further comprising:

defining the first virtual switch and the second virtual switch within the switch device.

11. A device located in a path between a first virtual switch defined within a switch device and a second virtual switch defined within the switch device, the device comprising:

a first port;

a memory storing computer program instructions; and

a processor configured to execute the computer program instructions which, when executed on the processor, cause the processor to perform operations comprising;

identifying a target world wide port name of a target port of a storage system connected to the second virtual switch;

registering, in a first registration procedure, the first port of the device with the first virtual switch based on the target world wide port name;

receiving, in a second registration procedure, registration information relating to an initiator port of a server that is associated with the target port;

determining an initiator world wide port name of the initiator port of the server, based on the registration information; and

identifying a storage volume in the storage system that is associated with the initiator port, based on the initiator world wide port name of the initiator port.

12. The device of claim 11, the operations further comprising:

assigning the target world wide port name to the first port of the device.

13. The device of claim 11, wherein the second registration procedure comprises registration by the initiator port with the device via the first port.

14. The device of claim 13, the operations further comprising:

receiving, in the second registration procedure, a switch port identifier associated with an initiator port of a server that is zoned to the target port.

15. The device of claim 11, the operations further comprising:

transmitting to the storage system a REPORT LUN command including the initiator world wide port name; and

receiving from the storage system, in response to the REPORT LUN command, information identifying the storage volume to which the initiator world wide port name has access.

16. The device of claim 15, the operations further comprising:

transmitting to the storage system a SCSI inquiry relating to the storage volume to which the initiator world wide port name has access;

receiving, in response to the SCSI inquiry, information indicating a global unique identifier of the storage volume; and

determining whether two storage volumes associated with the initiator world wide port name are identical based on the global unique identifier.

17. The device of claim 11, wherein the first virtual switch and the second virtual switch are defined within a Fibre channel switch.

18. The device of claim 11, the operations further comprising:

performing a data management service with respect to the identified storage volume, wherein the data management service comprises one of copying data, performing a snapshot of a data image, backing up data, replicating data, and performing data migration.