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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the safe box hard drive fails, metadata may be lost in large areas
This metadata management method is difficult to reconstruct the metadata in the failed physical hard disk

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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Embodiment Construction

[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0037] Aiming at the technical problem of slow reconstruction of metadata in existing metadata management methods, the embodiment of this application provides a solution. The basic idea is: when storing metadata in a storage system, not only The ID of the hard disk domain and the ID of each physical hard disk under the hard disk domain are stored in t...

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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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