Method, system and device for realizing dynamic balance of storage space

Abstract

The invention provides a method, system and device achieving storage space dynamic balancing. The method is applied to a storage system divided into two grade load balancing units, wherein one grade load balancing unit is a Chunk master, the other grade load balancing unit is a Chunk server, the Chunk master is used for managing at least one Chunk server, and the Chunk server is used for managing at least one Chunk. The Chunk master carries out the operation of receiving the load of the Chunk server reported by the Chunk server managed by the Chunk master and recording the reported load; after receiving of the storage space requirements sent by a client side, finding the load reported by the Chunk server corresponding to the Chunk master according to the reported and recorded load to meet load requirements, selecting all Chunks meeting the storage space requirements by means of residual space in all the Chunks, and returning the identification of the selected Chunks to the client side, and the client side updates data to the Chunk corresponding to the Chunk identification according to the received Chunk identification.

Description

technical field [0001] The present invention relates to the technical field of data storage, in particular to a method, system and device for realizing dynamic balance of storage space, and in particular, to a method, system and device for realizing dynamic balance of storage space in a distributed storage system. Background technique [0002] In Internet data storage, the ability to balance storage space allocation is an important indicator that reflects the business support capability of the storage system. It mainly refers to the balance of physical storage block space allocation and data heat balance of each node in the distributed storage system cluster, which affects the storage system. Overall throughput and efficiency of data location. At present, the existing storage space allocation balancing method is mainly a space balancing strategy in a distributed file system (HDFS: Hadoop Distributed File System). [0003] The so-called HDFS, which is used to provide high th...

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Problems solved by technology

[0007] However, the space balance strategy in HDFS does not consider the impact of read and write loads on storage system performance, which may easily cause a DataNode to be overloaded. Moreover, data relocation in HDFS will occupy a large amount of bandwidth, which is not suitable for sensitive data services.

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