Metadata management and data reconstruction method and device and storage medium

A management method and metadata technology, applied in the storage field, can solve the problems of metadata loss and difficult metadata reconstruction, and achieve the effect of improving the reconstruction speed.

Active Publication Date: 2019-03-29
RUIJIE NETWORKS CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, if the safe box hard drive fails, metadata may be lost in large areas
This metadata

Method used

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  • Metadata management and data reconstruction method and device and storage medium
  • Metadata management and data reconstruction method and device and storage medium
  • Metadata management and data reconstruction method and device and storage medium

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[0036] In order to make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0037] Aiming at the technical problem that the existing metadata management method is slow to reconstruct metadata, the embodiment of the present application provides a solution. The basic idea is: when storing the metadata of the storage system, not only the hard disk domain is stored The ID and the ID of each physical hard disk in the hard disk domain are sto...

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Abstract

Embodiments of the present application provide a metadata management and data reconstruction method and device, and a storage medium. In an embodiment of that present application, the RAID technologyis used to organize and manage the storage resources in the storage system, Aiming at the hard disk domain in the storage system, the metadata in the hard disk domain is organized and managed according to the RAID technology. When the hard disk domain is created, the ID of the hard disk domain and the ID of each physical hard disk under the hard disk domain are stored in the attribute descriptionarea of each hard disk. When the storage pool is built, the relationship between the storage pool and the hard disk domain and the mapping relationship between the storage pool and the chunking groupcontained in the storage pool are stored in the attribute description area of each hard disk. Based on the metadata organization structure, when the physical hard disk in the hard disk domain has a hard disk failure, other blocks belonging to the same block group can be quickly indexed according to the information stored in the attribute description area, which is helpful to improve the reconstruction speed of the data stored in the physical hard disk.

Description

technical field [0001] The present application relates to the field of storage technology, and in particular to a metadata management and data reconstruction method, device and storage medium. Background technique [0002] Redundant Array of Independent Disks (Redundant Array of Independent Disks, RAID) is a combination of multiple independent physical hard disks in different ways to form a logical hard disk, thereby providing a larger storage capacity or higher than a single physical hard disk. It is a technology that can provide different levels of data redundancy backup at the same time. In a storage system using RAID technology, storage resources are organized in a complex manner, and a large amount of metadata is required to describe the organizational structure among storage resources. [0003] In the prior art, generally, several physical hard disks in the storage system are set as safe boxes, and metadata is stored in the safe box in a centralized manner. However, ...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0614G06F3/0631G06F3/0644G06F3/0689
Inventor 范开基李文睿
Owner RUIJIE NETWORKS CO LTD
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