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Independent redundant disk array data reconstruction method, device and equipment

A redundant disk array and data reconstruction technology, applied in the direction of electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of low reconstruction efficiency and long time consumption

Inactive Publication Date: 2018-11-23
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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AI Technical Summary

Problems solved by technology

This reconstruction method needs to reconstruct the data on the disk from the beginning to the end, which takes a long time and the reconstruction efficiency is low.

Method used

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  • Independent redundant disk array data reconstruction method, device and equipment
  • Independent redundant disk array data reconstruction method, device and equipment

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Embodiment Construction

[0040] The core of the present invention is to provide a data reconstruction method, device and equipment of an independent redundant disk array, which only reconstructs the used part of the faulty disk, and does not perform reconstruction on the unused part, thereby shortening the reconstruction time and improving Refactor efficiency.

[0041] 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.

[00...

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Abstract

The invention discloses an independent redundant disk array data reconstruction method, device and equipment. The method comprises the following steps of: after the RAID independent redundant disk array is added to the storage pool, after the RAID formatted storage unit is added to the logical volume, setting the used flag on the storage unit in the logical volume; when a disk fault exists in theRAID memory is detected, setting a fault flag on all storage units corresponding to the fault disk; traversing all the storage units corresponding to the fault disk; if the currently traversed storageunit is simultaneously provided with the used flag and the fault flag, reconstructing the current traversed storage unit, and after the reconstruction is completed, cancelling the fault flag of the reconstructed storage unit, and continue to traverse the next storage unit; otherwise, directly traversing the next storage unit until the fault disk traversal is completed. According to the independent redundant disk array data reconstruction method, only the used parts of the fault disk are reconstructed, the unused parts are not reconstructed, so that the reconstruction time is shortened, and the reconstruction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of high availability of disk arrays, in particular to a data reconstruction method, device and equipment of an independent redundant disk array. Background technique [0002] RAID (Redundant Arrays of Independent Disks) is a large-capacity disk group composed of many cheaper disks. The array uses the bonus effect of individual disks to provide data to improve the performance of the entire disk system. . Using this technology, the data is cut into many sections and stored on each hard disk. At the same time, RAID also provides different levels of redundancy capabilities (except RAID0). When a disk in the array fails, the data in the failed disk can be restored to the hot spare disk through redundant data, thus ensuring the security of user data. Integrity, this process is called refactoring. [0003] Most of the reconstruction techniques are implemented through bitmap (a contiguous memory area). Use a bit...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0638G06F3/0689
Inventor 侯英利姜怡坤邹虎
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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