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Asynchronous replication method, device and system

A technology for asynchronous replication and synchronization of messages, which is applied in the storage field and can solve problems such as uncontrollable synchronization time and invalid synchronization.

Active Publication Date: 2014-06-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide an asynchronous replication method, device, and system to solve the problems of uncontrollable synchronization time and invalid synchronization during asynchronous replication of objects between the primary data center and the standby data center in the prior art

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  • Asynchronous replication method, device and system

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Embodiment Construction

[0189] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0190] figure 1 The flow chart of Embodiment 1 of the asynchronous replication method provided by the present invention, as shown in figure 1 As shown, the method embodiment includes:

[0191] S101. The primary data center receives a write request sent by the user equipment, and the write request includes data to be written;

[0192] S102. The master data center generates object metadata and object data corresponding to the data to be written, and stores the object data and the object metadata, the object metadata includes an object identifier, an...

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Abstract

The embodiment of the invention provides an asynchronous replication method, a device and a system. The method comprises that a main data center receives a write request that is emitted by a user device and comprises to-be-written data; object metadata and object data corresponding to the to-be-written data are generated and stored, wherein the object metadata comprises an object identity and the object data is equal to the to-be-written data; a first synchronous message is sent to a backup data center and comprises the object metadata; a synchronous request emitted by the backup data center is received and comprises the object identity; and a second synchronous message is sent to the backup data center according to the synchronous message and comprises the object data corresponding to the object identity contained in the synchronous message. The method overcomes the problem that time of object access in the backup data center by a user is uncontrollable.

Description

technical field [0001] Embodiments of the present invention relate to storage technologies, and in particular to an object storage-based asynchronous replication method, device and system among multiple data centers. Background technique [0002] Object storage services are generally used in large-scale data storage services, such as Internet mass content, backup and other services. An object is the basic unit of object storage, including object metadata and object data. Multiple Data Center (MDC for short) provides flexible data replication strategies and data redundancy strategies to ensure the continuity of business operations. Synchronization of data between data centers usually adopts asynchronous replication: data is successfully written to the user in the primary data center (DC1), and then the data is successfully written to the user, and then synchronized to the standby data center (DC2) in the background. [0003] In the existing technology, when object data is a...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L7/00
CPCG06F11/2097
Inventor 项锐张伦
Owner HUAWEI TECH CO LTD
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