Array reconstruction method and device based on metadata

A metadata and data technology, applied in the field of metadata-based array reconstruction methods and devices, can solve the problems of time extension, increase the possibility of data loss, reduce the reliability and efficiency of reconstruction, etc., to ensure reliability and redundancy performance, and the effect of shortening the rebuilding time

Active Publication Date: 2015-05-06
ZHEJIANG UNIVIEW TECH CO LTD
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Problems solved by technology

[0005] The present invention provides an array reconstruction method and device based on metadata to solve the problem that in the prior art, with the continuous increase of disk capacity, the time required for reconstruction according to the sector sequence of the disk will be prolonged, which increases the possibility of data loss. problems that reduce the reliability and efficiency of reconstruction

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  • Array reconstruction method and device based on metadata
  • Array reconstruction method and device based on metadata
  • Array reconstruction method and device based on metadata

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0021] see figure 1 , is a storage space division diagram of metadata in the metadata-based array reconstruction method according to the embodiment of the present invention:

[0022] figure 1 shows a metadata-based spatial organization of arrays. Wherein, the metadata in the array refers to internal data for managing space allocation of a disk array (Redundant Arrays of Independent Disks, RAID), that is, the information recorded in the space management metadata part of the array. The metadata itself records the latest time s...

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Abstract

The invention provides an array reconstruction method and device based on metadata. The method comprises the following steps: receiving an array reconstruction notice; obtaining each piece of data sector information in the metadata of an array according to the array reconstruction notice; sorting each data sector corresponding to the metadata according to a pre-set array reconstruction strategy and the information of each data sector in the metadata to obtain a corresponding reconstructed chain table; and reconstructing each data sector corresponding to the metadata in sequence according to the reconstructed chain table. With the adoption of the embodiment of the invention, each data sector corresponding to the metadata is reconstructed according to different array reconstruction strategies, so that the reconstruction flexibility can be enhanced and the reconstruction reliability can be improved.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a metadata-based array reconstruction method and device. Background technique [0002] With the development of network communication technology, the amount of data to be stored becomes larger and larger, making the capacity of the storage medium for storing the data larger and larger, for example, a large-capacity disk array. While the large-capacity disk array brings higher cost performance, it also makes the security problem of disk data more prominent, especially the problem of disk array reconstruction. [0003] In the prior art, if there is a problem with a disk in the redundant disk array, it can be replaced by a hot spare disk, and then data reconstruction is performed, and the data reconstruction is performed directly according to the sector sequence of the disk. [0004] However, as the capacity of the disk continues to increase, the time required for rebu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0629G06F3/0689
Inventor 蔡和严爱杰
Owner ZHEJIANG UNIVIEW TECH CO LTD
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