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RAID reconstruction method and device

A technology of target data and target hard disk, applied in the direction of instrument, digital data processing, input/output to record carrier, etc., can solve the problems of reducing RAID data security and data loss, saving reconstruction time and avoiding reconstruction , the effect of improving the security level

Pending Publication Date: 2021-09-21
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0002] When a hard disk in the RAID (Redundant Arrays of Independent Disks, disk array) has an abnormal reading and writing, the hard disk will be removed from the RAID, and the data stored in the removed hard disk will be lost in the RAID. , and will reduce the data security of the RAID, making the RAID in a degraded state

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  • RAID reconstruction method and device

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art based on the present application belong to the protection scope of the present invention.

[0035] When a hard disk in the RAID has an abnormal reading and writing, the hard disk will be removed from the RAID, so the data stored in the removed hard disk will be lost in the RAID, and the data security of the RAID will be reduced. , making the RAID in a degraded state. Based on this, on the premise of ensuring the integrity of the data stored in the RAID, as well as the data security of the RAID, and improving the security level of the RAID, how to qu...

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Abstract

The embodiment of the invention provides an RAID reconstruction method and device, and relates to the technical field of data storage. The reconstruction method is applied to the RAID drive. The method comprises the following steps: determining a target hard disk, wherein the target hard disk is used for reconstructing a target RAID; traversing each metadata stored in a file system to which the target RAID belongs, and when each metadata is traversed, determining whether a target data file corresponding to the metadata is a valid file; if yes, reconstructing target data to be stored in the target hard disk according to specified data stored in each initial hard disk; and storing the target data into the target hard disk. Compared with the prior art, by applying the scheme provided by the embodiment of the invention, on the premise of ensuring the integrity of the data stored in the RAID and the data security of the RAID and improving the security level of the RAID, the RAID after the hard disk with the read-write exception is removed can be quickly and efficiently reconstructed.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a RAID reconfiguration method and device. Background technique [0002] When a hard disk in the RAID (Redundant Arrays of Independent Disks, disk array) has an abnormal reading and writing, the hard disk will be removed from the RAID, and the data stored in the removed hard disk will be lost in the RAID. , and will reduce the data security of the RAID, so that the RAID is in a degraded state. [0003] In order to ensure the integrity of the data stored in the RAID, as well as the data security of the RAID, and improve the security level of the RAID, it is necessary to add a new blank hard disk to the RAID after removing the hard disk with the abnormal read and write, and rebuild the blank hard disk. The data content stored in . [0004] Based on this, on the premise of ensuring the integrity of the data stored in the RAID, as well as the data security of the RAID, and impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0689G06F3/0643G06F3/0647G06F3/0644G06F3/0619G06F3/062
Inventor 赵修伟
Owner HANGZHOU HIKVISION DIGITAL TECH
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