Metadata storage method and apparatus

A metadata and storage area technology, applied in the field of storage, can solve the problems of inability to update metadata concurrently, large disk space for metadata, and low update speed efficiency, so as to improve operation efficiency and performance, avoid waste, and update speed. Efficient effect

Active Publication Date: 2016-11-09
MACROSAN TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the disk space occupied by metadata is too large, resulting in a waste of disk space
Moreover, the metadata of each member disk needs to be stored in the metadata space of each member disk in turn, resulting in the operation of updating metadata cannot be performed concurrently, and the update speed is inefficient.

Method used

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  • Metadata storage method and apparatus

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Embodiment Construction

[0031] The terminology used in this application is for the purpose of describing specific embodiments only, not to limit the application. As used in this application and the claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0032]It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second information may also be called first information. Depending...

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PUM

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Abstract

The invention provides a metadata storage method and apparatus. The method and the apparatus are applied to an RAID comprising N member disks; and the redundancy degree of the RAID is M, wherein N is greater than M. The method comprises the steps of maintaining a mapping relationship between the member disks and storage regions, wherein for each member disk, L member disks are selected from the N member disks, one storage region is selected from each member disk of the L member disks, the mapping relationship between the member disks and the selected L storage regions is maintained, L is greater than M and less than or equal to N, and the L storage regions are arranged in a metadata space of each member disk; and querying the L storage regions corresponding to the member disk by utilizing the mapping relationship when metadata of the member disk needs to be stored, and storing the metadata in the L storage regions. Through the technical scheme provided by the method and the apparatus, the storage space of the disk can be saved, the space utilization rate can be increased, the metadata operation efficiency and performance can be improved, and the updating speed and efficiency are high.

Description

technical field [0001] The present application relates to the field of storage technologies, and in particular to a method and device for storing metadata. Background technique [0002] RAID (Redundant Array of Independent Disks, Redundant Array of Independent Disks) is a combination of multiple independent physical disks in different ways to form a disk group, thereby providing higher storage performance than a single physical disk, and providing Data backup technology. Commonly used RAIDs include RAID0, RAID1, RAID5, RAID6, and RAID10 according to different data organization methods. Wherein, the physical disks constituting the RAID are called member disks, and the space of the member disks includes metadata space and data space, the data space is used to store real data, and the metadata space is used to store metadata. Metadata includes data for managing the RAID and its member disks, for example, which member disks the RAID consists of, the status of the RAID, organiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0608G06F3/0644G06F3/0646G06F3/0689
Inventor 杨二垒
Owner MACROSAN TECH
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