Data synchronization method for metadata service cluster of cloud storage system

A technology of metadata service and cloud storage system, applied in the field of data synchronization of cloud storage system metadata service cluster, can solve the problems of asynchrony of stored data and poor data consistency, and achieve real-time synchronization of data, data consistency, and strong reliability Effect

Inactive Publication Date: 2014-10-15
CHENGDU ZHIYUN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a data synchronization method for metadata service clusters of a cloud storage system, which solves the problems of out-of-sync storage data and poor data consistency in existing cloud storage systems

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0021] A data synchronization method for a cloud storage system metadata service cluster, comprising steps:

[0022] (a) A metadata service cluster is composed of two or more metadata servers;

[0023] (b) create a disk device or modify data on a data node of one of the metadata servers;

[0024] (c) Data nodes that create disk devices or modify data send change information to the rest of the metadata servers in the metadata service cluster;

[0025] (d) The remaining metadata servers receive the change information and simultaneously update the data in the corresponding data nodes.

[0026] Similarly, if the data of the metadata nodes on other metadata servers is modified, the change information will be sent to the rest of the metadata servers in the entire metadata service cluster, and the data in the data nodes on the other metadata servers will be updated at the same time.

[0027] The content of the change information sent by the data node is: the xx part of the data nod...

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PUM

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Abstract

The invention discloses a data synchronization method for a metadata service cluster of a cloud storage system, and solves the problems of asynchronous data storage and poor data consistence in the conventional cloud storage system. The method comprises the following steps: (a) constructing the metadata service cluster by using more than two metadata servers; (b) creating disk equipment or modifying data on the data node of one metadata server; (c) transmitting change information to the remaining metadata servers in the metadata service cluster by using the data node on which the disk equipment is created or data are modified; (d) receiving the change information by using the remaining metadata servers and updating data in corresponding data nodes at the same time. According to the data synchronization method, data are synchronized in real time, thereby realizing high data consistence and enhancing the reliability of the system. If one of the metadata servers breaks down, running of the entire system is not influenced. Each metadata server does not influence one another, high disaster toleration, high system performance and high processing speed are realized, and flow is saved.

Description

technical field [0001] The invention belongs to the field of cloud computing, and in particular relates to a data synchronization method for a metadata service cluster of a cloud storage system. Background technique [0002] In order to better ensure data security and integrity, synchronous backup of data is particularly important for enterprises and individuals. Most small and medium-sized enterprises perform automatic or manual synchronous backup of data through the database management system, which usually requires local The server disk has a certain amount of storage space to store synchronously backed up data. Personal user data is mainly stored in mobile devices and PC hard drives. Users who often travel to and from different places need to carry these devices with them or use software with backup functions to store data. [0003] With the popularization of the concept of cloud computing, the open source cloud computing platform Hadoop has become a research hotspot. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 黄睿
Owner CHENGDU ZHIYUN SCI & TECH
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