Distributed data copying method and device

A technology of distributed data and replication methods, applied in the field of distributed data replication methods and devices, can solve problems such as increased host write IO delay, and achieve the effect of avoiding mutually exclusive access and reducing delay.

Active Publication Date: 2014-05-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the data replication method in the prior art requires mutually exclusive access between multiple storage nodes in a multi-controller storage system, resulting in increased host write IO delay

Method used

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  • Distributed data copying method and device
  • Distributed data copying method and device
  • Distributed data copying method and device

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Embodiment Construction

[0047] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0048] figure 2 Is a flowchart of Embodiment 1 of the distributed data replication method of the present invention, such as figure 2 As shown, this embodiment provides a distributed data replication method, which may specifically include the following steps:

[0049] Step 201: Receive the write request sent by the host, split the writ...

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Abstract

An embodiment of the invention provides a distributed data copying method and device. The method includes that a write request is received, the write request is separated into multiple write sub-requests, each write sub-request carries part of the data carried by the write request, the write address of each write sub-request points to one source sub-volume of a source volume of a production site, the source volume is divided into multiple source sub-volumes, and each source sub-volume is located at one storage node of the production site; data is written into each source sub-volume according to the write sub-requests, and the backup information of each source sub-volume is generated; each backup information is transmitted to a disaster recovery backup site, and the backup information of the source sub-volumes jointly forms the backup information of the source volume.

Description

Technical field [0001] The present invention relates to communication technology, and in particular to a distributed data replication method and device. Background technique [0002] With the development of the information society, the amount of data becomes larger and larger, and data disaster preparedness becomes more and more important. Currently, storage node vendors generally implement local or remote disaster recovery solutions through remote replication technology. The disaster recovery system generally includes a local production site and a remote disaster recovery site. The data of the local production site is backed up to the remote disaster recovery site through remote replication technology. Site separation or geographic separation is used to ensure the disaster recovery system's ability to withstand disaster events. No data is lost or as little as possible. There are two types of remote replication modes: synchronous and asynchronous. In the synchronous mode, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F3/06
Inventor 刘昆鹏
Owner HUAWEI TECH CO LTD
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