Method and system for assigning or creating a resource

• US 7,970,907 B2
• Filed: 01/21/2009
• Issued: 06/28/2011
• Est. Priority Date: 12/17/2003
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Webster, Kevin J., Lamb, Michael L., Swank, Raymond M., Groves, David W.
• Primary Examiner(s): Nguyen; Dustin
• Application Number:
  US12/357,343
• Publication Number:
  US 20090132711A1
• Time in Patent Office: 888 Days
• Field of Search: 709/223, 709/229, 711/114, 711/170, 711/154, 710/5, 707/999.008
• US Class Current: 709/226
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0617 in relation to availability
• CPC Class Codes: G06F 3/0631 by allocating resources to storage systems
• CPC Class Codes: G06F 3/0632 by initialisation or re-initialisation of storage 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: Y10S 707/99938 Concurrency, e.g. lock management in shared database

Abstract

An example of a method for assigning a resource (for example, storage) includes receiving a request for a resource, wherein the request includes a list of paths. This example also includes retrieving a HardwareAccount, Controller, and an AccessAuthorization object for a first path in the list of paths. This example further includes making an attach device request to a CIMOM for a first available resource, using the Controller and the AccessAuthorization object. This example also includes determining if the first available resource was successfully attached, and if so, recording the assignment as successful, and if not, rolling back all assignments for the first available resource that were previously recorded as successful. Another aspect of the invention is a method for creating at least one LUN.

Claims

1. A machine readable storage device embodying a program of machine-readable instructions executable by a digital processing apparatus to perform a method for creating at least one LUN, the method comprising the following operations:

receiving a request to create storage on a disk storage system, wherein the request specifies a LUN size and a requested number of LUNs;

selecting a StoragePool object representing one of a plurality of storage pools having available storage space to create the requested number of LUNs;

retrieving a StorageConfigurationService of the disk storage system using an association of all ComputerSystem objects to the selected StoragePool object;

associating the ComputerSystem object representing the disk storage system with the StorageConfigurationService;

setting the LUN size equal to a calculated size;

setting the storage pool as the selected StoragePool object; and

invoking a CreateOrModifyElementFromStoragePool( )method through the retrieved StorageConfigurationService for each LUN in the requested number of LUNs.

2. The machine readable storage device of claim 1, wherein the operations further comprise calculating the LUN size based on a constraint of a disk storage system.

3. The machine readable storage device of claim 1, wherein the operations further comprise returning a list of LUNs.

4. The machine readable storage device of claim 3, wherein the operations further comprise assigning the LUNs on the list of LUNs to a requesting host.

5. The machine readable storage device of claim 4, wherein the operations further comprise sending LUN assignment information to the requesting host.

6. The machine readable storage device of claim 1, wherein the receiving operation further comprises receiving a list of storage pools.

7. The machine readable storage device of claim 1, wherein a size constraint from a caller is used in the calculating operation.

8. The machine readable storage device of claim 1, wherein the operations further comprise converting the calculated size from megabytes to million bytes.

9. The machine readable storage device of claim 1, further comprising setting an ElementType to a value selected from the set consisting of Storage Volume and StorageExtent.

10. The machine readable storage device of claim 1, wherein the operations further comprise selecting a storage setting based on a desired redundancy.

11. The machine readable storage device of claim 1, wherein the operations further comprise determining if an error has occurred and if so, the operations further comprise recording the error, and if an additional StoragePool object with available space is available, the operations further comprise selecting an additional StoragePool object with available space to create the at least one LUNs, and repeating the retrieving, associating, setting the storage pool, and the invoking operations using the additional StoragePool object as the selected StoragePool object.

12. A computing system, comprising:

a memory; and

a processing device coupled to the memory, wherein the processing device is programmed to perform operations for creating at least one LUN, the operations comprising;

receiving a request to create storage on a disk storage system, wherein the request specifies a LUN size and a requested number of LUNs;

calculating a size based on a constraint of a disk storage system;

selecting a StoragePool object representing one of a plurality of storage pools having available storage space to create the requested number of LUNs;

retrieving a StorageConfigurationService of the disk storage system using an association of all ComputerSystem objects to the selected StoragePool object;

associating the ComputerSystem object representing the disk storage system with the StorageConfigurationService;

setting the size equal to the calculated size;

setting the storage pool as the selected StoragePool object;

invoking a CreateOrModifyElementFromStoragePool( ) method through the retrieved StorageConfigurationService for each LUN in the requested number of LUNs; and

returning a list of LUNs.

13. A computing system, comprising:

means for receiving a request to create storage on a disk storage system, wherein the request specifies a LUN size and a requested number of LUNs;

means for selecting a StoragePool object representing one of a plurality of storage pools having available space to create the requested number of LUNs;

means for retrieving a StorageConfigurationService of the disk storage system using an association of all ComputerSystem objects to the selected StoragePool object;

means for associating the ComputerSystem object representing the disk storage system with the StorageConfigurationService;

means for setting the size equal to a calculated size;

means for setting the storage pool as the selected StoragePool object; and

means for invoking a CreateOrModifyElementFromStoragePool( )method through the retrieved StorageConfigurationService for each LUN in the requested number of LUNs.

14. A method for creating at least one LUN, comprising the following operations:

receiving a request to create storage on a disk storage system, wherein the request specifies a LUN size and a requested number of LUNs;

selecting a StoragePool object representing one of a plurality of storage pools having with available space to create the requested number of LUNs;

retrieving a StorageConfigurationService of the disk storage system using an association of all ComputerSystem objects to the selected StoragePool object;

associating the ComputerSystem object representing the disk storage system with the StorageConfigurationService;

setting the size equal to a calculated size;

setting the storage pool as the selected StoragePool object;

invoking a CreateOrModifyElementFromStoragePool( )method through the retrieved StorageConfigurationService for each LUN in the requested number of LUNs; and

returning a list of LUNs.