A method for self-balancing data access pressure under shared storage device

A storage device and data access technology, applied in the directions of resource allocation, multi-programming device, input/output to record carrier, etc., can solve the problems of slow controller access pressure and idle controller, and achieve the effect of achieving access pressure balance

Inactive Publication Date: 2011-12-07
江苏明天互联网大健康科技有限公司
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Problems solved by technology

[0005] However, there are still many defects in the above-mentioned prior art. For the first method, if the logical storage devices to be accessed are concentrated on one controller, it may cause the controller to become slow due to excessive access pressure, and The other controller is idle
For the second method, a device specially used to implement the balancer is required, which brings additional hardware and software overhead

Method used

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  • A method for self-balancing data access pressure under shared storage device
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  • A method for self-balancing data access pressure under shared storage device

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Embodiment Construction

[0031] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0032] Please refer to image 3 with Figure 4 , image 3 Shows a block diagram of the structure of the system operated by the present invention, Figure 4 It is a flowchart of the method of the present invention.

[0033] Such as image 3 As shown, the multiple controllers (first controller 310, second controller 320) of the present invention are respectively connected to an external network 340, and the external network 340 may be an Ethernet network, a fiber channel, or other networks. The first controller 310 is connected to the second controller 320 through the connection channel 330. Wherein, the connection channel 330 may be an Ethernet network, a SAS connection or other connection methods.

[0034] The first controller 310 and the second controller 320 share three physical storage devices HD1, HD2, and HD3. Corresponding to the ...

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Abstract

The invention discloses a method for self-balancing data access pressure under a shared storage device. The method includes the following steps: setting the logic storage device access pressure threshold of each controller; monitoring the data access flow rate of each controller; when the first controller When the data access flow of the controller exceeds the logical storage device access pressure threshold of the first controller, and the data access objects are two or more logical storage devices, then negotiate with the second controller; if the second controller’s If the data access flow exceeds the logical storage device access pressure threshold of the second controller, then delay the negotiation; otherwise, query the logical storage device with less data access flow in the first controller; and prohibit this in the first controller operating the logical storage device, and enabling the operation of the logical storage device in the second controller.

Description

Technical field [0001] The invention relates to a method for accessing storage equipment, in particular to a method for self-balancing data access pressure under shared storage equipment. Background technique [0002] At present, in order to improve the availability and parallel processing capabilities of the system, multiple controllers are usually used to share multiple physical storage devices. The process of reading and writing to the storage device by the user through the controller usually has the following two methods: [0003] One, such as figure 1 As shown, the first controller 110 and the second controller 120 are connected through a connection channel 130. For any physical storage device, only one controller (such as the first controller 110) can read or write to it at any one time. When the user uses other controllers (such as the second controller 120) to When the physical storage device performs a read or write operation, data is transferred between controllers throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F9/50
Inventor 庄钦平陈玄同
Owner 江苏明天互联网大健康科技有限公司
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