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Method, device and sever for writing, modifying and restoring data

A data writing and server technology, which is applied in the field of distributed systems, can solve the problems of high probability of storage node failure and difficulty in ensuring data consistency, and achieve the effect of reducing the possibility of data inconsistency and improving reliability

Active Publication Date: 2010-05-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The probability of failure of storage nodes in such a huge distributed file system is also increasing, making it increasingly difficult to guarantee the data consistency of the same object on different storage nodes

Method used

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  • Method, device and sever for writing, modifying and restoring data
  • Method, device and sever for writing, modifying and restoring data
  • Method, device and sever for writing, modifying and restoring data

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Embodiment Construction

[0049] The embodiment of the present invention discloses a method, device and system for writing, modifying and recovering data. In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples below. illustrate.

[0050]In a distributed file system, in order to ensure data reliability, data objects need to be redundantly backed up. A typical approach is to replicate multiple copies of an object, and then store these copies on different object servers. This method can guarantee the reliability of data, but it also raises a problem, that is, the problem of data consistency between replicas. The existence of these redundant copies is valuable only if the data between the copies is consistent. But in fact, due to many reasons such as failures when copy data is written, there is a risk of inconsistency in the data of multiple copies ...

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Abstract

The embodiment of the invention discloses a method, a device and a sever for writing, modifying and restoring data. The scheme provided by the embodiment of the invention starts from three basic operations of writing, modifying and restoring the data on object servers respectively, and ensures the consistency when a plurality of copies of same object data are simultaneously stored on different object servers through a series of methods, thereby greatly reducing the probability of inconsistent data between the copies, fundamentally preventing the appearance of a single copy, and greatly improving the reliability of a distributed file system.

Description

technical field [0001] The present invention relates to the technical field of distributed systems, in particular to a method, device and server for writing, modifying and recovering data. Background technique [0002] With the rapid development of computer networks, especially the Internet, the concept of traditional information systems has undergone tremendous changes, and these changes are prominently reflected in the revolutionary changes in the way information is stored, transmitted, released and acquired. At the same time, the network-based distributed information system has been widely used in various fields, and is playing an increasingly prominent role in the entire social life. Among them, the distributed file system has begun to be widely used in storage solutions. [0003] Distributed file systems are very different from traditional disk arrays in their storage methods. The disk array adopts the method of centralized storage, all the data are concentrated in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 程菊生
Owner HUAWEI TECH CO LTD
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