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Contention arbitrating method and system for shared disk of double-control storage array

A shared disk, dual-control storage technology, applied in the field of resource management, can solve problems such as data errors

Active Publication Date: 2015-04-08
INSPUR BEIJING ELECTRONICS INFORMATION IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Controller A and controller B query the working status of the user through the communication link. If the communication link is interrupted, it will be considered that the peer controller is abnormal, and the local controller will take over the use of the disk. The disadvantage of this method is that if the The entire system only has a communication link failure, and controller A and controller B will use the same disk at the same time, resulting in data errors in the corresponding disks

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  • Contention arbitrating method and system for shared disk of double-control storage array
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  • Contention arbitrating method and system for shared disk of double-control storage array

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Embodiment Construction

[0017] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0018] figure 2 Shown is the flow chart of the shared disk contention arbitration method of the dual-controller storage array of the present invention, including the following steps:

[0019] Step 201: Pre-reserving a storage space of a preset size in the disk to be contended for as an occupation information field; wherein, the occupation information field is used to save the controller ID and time stamp;

[0020] The occupation information field is used to save the ID of the controller occupying the disk to be contended for and the time stamp when the controller uses the disk to be contended for.

[0021] Step 202: After the first controller queries the disk to be contended to obtain the state of...

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Abstract

The invention provides a contention arbitrating method and system for a shared disk of double-control storage array. The method comprises the following steps: reserving the storage space with preset size as the occupation information field in the to-be-contended disk; through inquiring the to-be-contended disk, after obtaining the occupation information field status of the to-be-contended disk, according to the preset conflict access control policy, and performing the access control to the to-be-contended disk by a first controller. The disk is used as the arbitrating medium for disk contention in the double-control storage array system, so the method is capable of effectively avoiding the brain-split caused by the communication link failure of the double-control storage array system, and preventing the use conflict of two controllers about the shared disk.

Description

technical field [0001] The invention belongs to the field of resource management, and in particular relates to a shared disk contention arbitration method and system of a dual-controller storage array. Background technique [0002] figure 1 It is a schematic diagram of the internal interconnection of the dual-control storage array system in the prior art, including controller A and controller B; the two controllers realize data and information exchange through the communication link channel; controller A and controller B respectively pass corresponding Disk channel, shared access to Disk 1, Disk 2, Disk 3, Disk 4... Disk n. [0003] There is a communication link between controller A and controller B in the above-mentioned dual-controller storage array system, and the use negotiation of the shared disk and the state detection of controller A and controller B all rely on the communication link between controller A and controller B. Communication complete. When controller A ...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0658G06F3/0683
Inventor 刘友生张书宁闫永刚徐旸
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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