A data migration method, device and system for a distributed storage system

A distributed storage and data technology, applied in the field of communication, can solve the problems of rarely used large-scale Internet systems, complex distributed storage systems, complex logic, etc., achieve real-time smooth linear expansion, reduce deployment complexity, and improve system performance Effect
CN103067433BActive Publication Date: 2016-04-20ZHEJIANG TMALL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG TMALL TECH CO LTD
Publication Date
2016-04-20

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Abstract

The invention discloses a method, device and system of data migration of a distributed type storage system. The method includes the steps that a source storage server receives data which are from a client-side and need to be written into, and the data is written into a target storage server by the source storage server when the data are determined to need to be written into the target storage server by the source storage server according to preset routing algorithm. In the implemented cases, in the process of migrating the data to the target storage server by the source storage server, the data which need to be written into are still sent to the source storage server by the client-side, the source storage server acts on behalf of the client-side in a responsibility position and stores the data onto the target storage server provided that the memory address of the data is the target storage server, and thereby the distributed type storage system can achieve smooth linear scale in real time, improve performance of the system, improve usability and reduce deployment complexity.
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Description

technical field

[0001] This application relates to the field of communication technology, and in particular to a data migration method, device and system for a distributed storage system Background technique

[0002] In a distributed storage system (that is, data is stored in multiple independent storage servers), when the data storage requirement reaches the actual physical storage capacity, the distributed storage system needs to be physically expanded to meet the demand. The usual method of physical expansion is Add a new storage server to the storage cluster.

[0003] In the prior art, the ways to realize the expansion of the distributed storage system include:

[0004] (1) The expansion of the distributed storage system is realized by shutting down the storage server for maintenance, which will affect the availability of the distributed storage system.

[0005] (2) Realize the expansion of the distributed storage system through HDFS (Hadoop DistributedFileSystem, dist...

Claims

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