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Distributed storage data recovery method, device and system

A distributed storage and recovery method technology, applied in the field of devices and systems, and distributed storage data recovery methods, can solve the problems of wasting network bandwidth and huge data volume, and achieve the effect of saving network bandwidth and reducing the amount of data transmission

Active Publication Date: 2016-03-30
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors found that since the snapshot files store data backups, the amount of data that needs to be transmitted is very large by comparing the data backups of the faulty node with the data backups of the node providing the restored data when performing data recovery, which seriously wastes network bandwidth

Method used

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  • Distributed storage data recovery method, device and system
  • Distributed storage data recovery method, device and system
  • Distributed storage data recovery method, device and system

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. However, it should be understood that many implementation-specific decisions must be made in developing any such practical implementation in order to achieve the developer's specific goals, and that these decisions may vary from implementation to implementation .

[0042] In this embodiment, the local node refers to a node that needs to restore data, and may also be called a faulty node; the target node refers to a node that provides restored data, and may also be called a restored data target node.

[0043] In a distributed storage system, the same data needs to be stored on different nodes to form a backup. The corresponding storage data on the nodes with the backup relationship should be consistent. Such as figure 1 As shown,...

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Abstract

Embodiments of the present invention provide a method, device, and system for recovering distributed storage data. The method comprises: a local node receiving a data operation sequence set list sent, according to a version value of a data operation sequence set of the local node, by a destination node; receiving data corresponding to the data operation sequence set list sent by the destination node; and according to the data operation sequence set list and the data corresponding to the data operation sequence set list, updating data of the local node. The method, device, and system for recovering distributed storage data provided in the embodiments of the present invention are able to recover data by sending the version number of a data operation sequence set of a local node, thereby reducing data transmission volumes and saving network bandwidth.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a method, device and system for recovering distributed storage data. Background technique [0002] With the development of information technology, massive data processing has brought challenges to traditional data processing methods. Therefore, various large-scale distributed cluster systems emerge as the times require. The distributed cluster system is composed of a large number of traditional nodes. By sharing the processing capacity to each node, it presents a powerful overall processing capacity to the outside world. Nodes need to cooperate by sharing data to complete processing tasks. [0003] The distributed block storage system is a distributed storage system that uses data blocks as the storage unit to meet the needs of massive storage, and presents a powerful storage capability to the outside world. When a node fails in a distributed storage system, h...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1402
Inventor 王志用杨德平
Owner HUAWEI CLOUD COMPUTING TECH CO LTD