Multi-active RAID (redundant array of independent/inexpensive disks) reading-writing system
A read-write system, one-to-one correspondence technology, applied to the generation of response errors, instruments, electrical digital data processing, etc., can solve the problems of system IO performance degradation, etc., to improve the efficiency of reading and writing, ensure continuity, and guarantee reliability sexual effect
Inactive Publication Date: 2018-02-13
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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However, adding a mutex will reduce the IO performance of the system
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[0018] The core of the present invention is to provide a multi-active RAID read-write system with high IO performance under the premise of ensuring data consistency.
[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The invention provides a multi-active RAID read-write system, including multiple controllers, RAID, and processing devices;
[0021] The processing device is used to al...
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The invention discloses a multi-active RAID reading-writing system, comprising a plurality of controllers, an RAID and a processing device; the RAID includes a plurality of storage areas; the processing device is used for allocating one storage area to each controller in one-to-one correspondence manner, wherein the controllers process reading-writing of the storage areas allocated to themselves;in case that the controllers experience failure, the normal controllers are selected according to preset rules to process the reading and writing of the corresponding storage areas of the failed controllers. In the system provided herein, one specific controller is allocated to the reading and writing of each storage area in the RAID in one-to-one correspondence manner for the purpose of control,so that it can be avoided that multiple controllers read and write the same area at the same time; adding a distributed lock to coordinate the reading-writing of the same area by the controllers is not required, and accordingly, reading-writing efficiency is improved at the premise of ensuring RAID data uniformity.
Description
technical field [0001] The invention relates to the technical field of computer storage, in particular to a multi-active RAID read-write system. Background technique [0002] With the development of computer technology, RAID (Redundant Array of Independent Disks, redundant disk array) is more and more widely used in social production and life. There are multiple controllers in the RAID multi-control storage system. When a controller fails, the normal controller can quickly take over the business of the faulty controller, thus ensuring the continuity of the business. The all-active mode is a commonly used working mode in a multi-controller storage system. [0003] At present, in the multi-controller storage system based on the multi-active mode, the method of adding distributed locks between each controller node in units of stripes is usually adopted to avoid the situation that multiple controllers read and write to the same stripe at the same time. , so as to ensure data c...
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IPC IPC(8): G06F11/20
CPCG06F11/2092
Inventor 侯英利张永锋姜怡坤
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD