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A method to improve the write performance of dual controllers

A dual-controller, controller technology, applied in the direction of instrument, response error generation, hardware redundancy for data error detection, etc., can solve the problem that the host business performance has a very large impact, performance degradation, and increased service request delay. and other problems to achieve the effect of improving business writing performance and improving overall performance

Active Publication Date: 2020-05-26
BEIJING CERESDATA TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Multiple data transmissions increase the delay of business requests, and when the bandwidth between dual controllers becomes a bottleneck, it has a great impact on the host business performance
Especially when the transmission channel between controllers becomes a bottleneck (such as bandwidth, delay, packet loss and other factors) the performance decline is particularly obvious

Method used

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  • A method to improve the write performance of dual controllers
  • A method to improve the write performance of dual controllers

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with specific embodiments and specific examples.

[0019] The traditional Active-Standby dual-controller storage system processes write services as follows: figure 1 shown.

[0020] The method adopted by the present invention to improve the write performance of dual controllers is as follows: figure 2 As shown, the specific implementation is as follows:

[0021] 1) After the standby controller forwards the write service request to the active controller at the command processing layer, the active controller will request the actual data from the standby controller with a fixed byte size (such as 256K), and the standby controller will receive the request from the active controller After reading the data request, request data from the host.

[0022] 2) When the Standby controller successfully acquires data from the host side, it first saves a copy in the memory and marks it with meta information, and...

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Abstract

The invention discloses a method for improving writing performance of double controllers. According to the invention, the write service data is only transmitted once between the two controllers, i.e.,the Standby controller end command processing layer does not process the write request after receiving the write request and directly forwards the write request to the Active controller end. The process of generating the mirror image data by the Standby controller end is optimized, so that only the data element information is transmitted between the double controllers, and the actual data does not need to be transmitted. By optimizing the service writing performance of the Standby controller, the overall performance of the application system is improved.

Description

technical field [0001] The invention relates to the field of computer storage systems, in particular to a method for improving the writing performance of dual controllers. Background technique [0002] Traditional storage systems generally adopt a dual-controller Active-Standby architecture design, usually only the Active controller works, and the Standby controller is in a standby state. The reason is that only one of the controllers can access the back-end disk device at any time, and the controller is in the Active state, while the other controller is in the Standby state. [0003] Therefore, when hosting host services, service requests are usually only sent to the Active controller for processing. However, if the Standby controller receives a business request, it will be forwarded to the Active controller for processing through the communication between the controllers. [0004] When the traditional standby controller handles the write business, the data will be transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/20
CPCG06F11/2056G06F11/2087
Inventor 杨刚方林
Owner BEIJING CERESDATA TECH CO LTD