STORAGE SYSTEM AND VOLUME MANAGING METHOD FOR STORAGE SYSTEM

• US 20090248847A1
• Filed: 05/16/2008
• Published: 10/01/2009
• Est. Priority Date: 03/26/2008
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: KAMEI, Hitoshi, SUTOH, Atsushi
• Application Number:
  US12/122,072
• Publication Number:
  US 20090248847A1
• Time in Patent Office: Days
• US Class Current: 709/223
• CPC Class Codes: G06F 3/0611 in relation to response time
• 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]

Abstract

A time and an amount of data for setting information which is necessary to execute an exclusion process which is necessary when data is stored in a cluster system are reduced. A storage system included in the cluster system includes a plurality of volumes, and a plurality of virtual servers utilizing at least one or more volumes of the plurality of volumes for a data processing, each of the plurality of virtual servers can access all the plurality of volumes, and the volume utilized by the plurality of virtual servers to process data corresponds to the virtual servers.

Claims

1. A storage system included in a cluster system, comprising:

a plurality of volumes; and

a plurality of virtual servers utilizing at least one or more volumes of the plurality of volumes for a data processing,

wherein each of the plurality of virtual servers can access all of the plurality of volumes, and the volume utilized by the plurality of virtual servers for the data processing includes a storing unit for storing information indicating that the volume corresponds to the virtual server.

2. The storage system according to claim 1,

wherein the plurality of volumes are included in at least one or more storage apparatus, and the plurality of virtual servers are included in at least one or more servers.

3. The storage system according to claim 2,

wherein the data processing is a data write process or a data read process.

4. The storage system according to claim 3,

wherein each of the one or more servers includes a maintaining unit for maintaining information indicating a condition whether or not each of the plurality of volumes can be utilized.

5. The storage system according to claim 3,

wherein the volume is generated based on an instruction from a managing terminal for managing the storage system.

6. The storage system according to claim 3,

wherein the information stored in the storing unit includes information on a first identifier for specifying the virtual server corresponding to the volume in which the storing unit is stored.

7. The storage system according to claim 6,

wherein the information stored in the storing unit includes information on a second identifier for specifying the server including the virtual server specified by the first identifier.

8. The storage system according to claim 7,

wherein when a failover is executed for one of the plurality of virtual servers, and the one virtual server is changed so as to be included in another server, the second identifier stored in the storing unit is changed to the second identifier corresponding to the another server.

9. The storage system according to claim 6,

wherein the storage apparatus includes a controlling unit for executing controls for, when receiving a request for the data write process or the data read process from one of the plurality of virtual servers to one of plurality of volumes, determining whether or not the one of the plurality of virtual servers is the virtual server corresponding to the volume based on the information on the first identifier stored in the volume, when the virtual server from which the request is received is the corresponding virtual server, executing the data write process or the data read process, and when the virtual server from which the request is received is not the corresponding virtual server, not executing the data write process or the data read process.

10. A volume managing method for a storage system included in a cluster system, the storage system including a plurality of volumes and a plurality of virtual servers utilizing at least one or more volumes of the plurality of volumes for a data processing, comprising:

a step for storing information indicating that the volume corresponds to the virtual server in the volume utilized by the plurality of virtual servers for the data processing; and

a step for accessing based on the stored information when the plurality of virtual servers execute the data processing for one of the plurality of volumes.

11. The volume managing method for the storage system according to claim 10,

wherein the plurality of volumes are included in at least one or more storage apparatus, and the plurality of virtual servers are included in at least one or more servers.

12. The volume managing method for the storage system according to claim 11,

wherein the data processing is a data write process or a data read process.

13. The volume managing method for the storage system according to claim 12,

wherein each of the one or more servers includes

a step for maintaining information indicating a condition whether or not each of the plurality of volumes can be utilized.

14. The volume managing method for the storage system according to claim 12, comprising:

a step for generating the volume based on an instruction from a managing terminal for managing the storage system.

15. The volume managing method for the storage system according to claim 12,

wherein the information at the storing step includes information on a first identifier for specifying the virtual server corresponding to the stored volume.

16. The volume managing method for the storage system according to claim 15,

wherein the information at the storing step includes information on a second identifier for specifying the server including the virtual server specified by the first identifier.

17. The volume managing method for the storage system according to claim 16, comprising:

a step for changing the second identifier stored at the step for storing the second identifier to the second identifier corresponding to another server when a failover is executed for one of the plurality of virtual servers, and the one virtual server is changed so as to be included in the another server.

18. The volume managing method for the storage system according to claim 12, comprising:

a step for determining, when receiving a request for the data write process or the data read process from one of the plurality of virtual servers to one of the plurality of volumes, whether or not the virtual server from which the request is received is the virtual server corresponding to the volume based on the information on the first identifier stored in the volume;

a step for executing the data write process or the data read process when the virtual server from which the request is received is the corresponding virtual server; and

a step for not executing the data write process or the data read process when the virtual server from which the request is received is not the corresponding virtual server.