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Subarea distribution method, device and distributed type storage system

An allocation method and partition technology, applied in the transmission system, the generation of response errors, electrical components, etc., can solve problems such as the deterioration of the results of partition allocation

Active Publication Date: 2013-04-17
浙江杭海新城控股集团有限公司
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Problems solved by technology

However, in order to ensure that the partition allocation results are optimal each time the faulty node is removed and the faulty node is restored, and in order to meet the condition of no invalid migration, such a restriction makes the allocation when all faulty storage nodes have been restored. The result is worse than the result of uniform allocation of all partitions on all storage nodes. In this case, if there is a node failure scenario, the result of partition allocation will continue to deteriorate on the existing basis and become more and more Difference

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  • Subarea distribution method, device and distributed type storage system
  • Subarea distribution method, device and distributed type storage system

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Embodiment Construction

[0048] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0049] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0050] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, means, components and circuits are ...

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Abstract

The invention discloses a subarea distribution method, device and a distributed type storage system, relating to the technical field of distributed type storage. The subarea distribution method comprises the following steps of: pre-building snapshot of a subarea distribution result under a stable storage-node topological structure; when a storage node fails, distributing subarea copies on the fault node to the other storage nodes; if the fault node returns to be normal, redistributing the subarea copies distributed to the other storage nodes from the fault node returning to be normal to the fault node returning to be normal according to the record of the snapshot. The invention has the advantages that the stable-state subarea distribution result is used as a basis, the redistribution of the subarea copies is carried out according to the snapshot of the subarea distribution result, and when the fault node occurs in the storage system, the optimality of the result of subarea distribution can be ensured, so that basic operation of the storage system under the optimal subarea distribution scheme is ensured.

Description

technical field [0001] The present invention relates to the technical field of distributed storage, in particular to a partition allocation method, device and distributed storage system. Background technique [0002] With the rapid development of computer technology and network technology, the amount of data that needs to be stored and processed has grown exponentially. Traditional storage systems use centralized storage servers to store all data. Storage servers have become the bottleneck of system performance, as well as reliability and security. The focus of performance cannot meet the needs of large-scale storage applications. So the distributed storage solution came into being. The distributed storage solution uses technologies such as multi-copy and striping to meet the user's needs for data security and read-write efficiency. Such as figure 1 As shown, the distributed storage system adopts a scalable system structure, uses multiple storage servers to share the stor...

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Application Information

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IPC IPC(8): H04L29/08G06F11/14
Inventor 程君
Owner 浙江杭海新城控股集团有限公司
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