Full distributed duplicate copy positioning method for data grid

A fully distributed, positioning method technology, applied in the network field, can solve the problems of low copy positioning efficiency, copy positioning model cannot be adaptive and dynamic adjustment, etc., to achieve the effect of ensuring stability

Inactive Publication Date: 2008-08-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In short, there are two major problems with the replica location model in the existing data grid: (1) The efficiency of replica location w

Method used

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  • Full distributed duplicate copy positioning method for data grid
  • Full distributed duplicate copy positioning method for data grid
  • Full distributed duplicate copy positioning method for data grid

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0030] As shown in Figure 1, the method of the present invention first accepts a user command, judges whether the user command is to create a copy, find a copy or delete a copy, and then perform corresponding operations respectively. After completing an operation, accept the user command to judge whether it is over. operation, return to accept user commands, otherwise end the entire process.

[0031] Architecture of a distributed replica location model replica service system. The whole replica service system is composed of several replica service pairs (that is, storage nodes), and these replica service pairs belong to different logical domains. A collection of resources serving the same application is defined as a logical domain. Taking Figure 2 as an example, there are three logical domains, and each logical domain has three replica service pairs. These...

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Abstract

The invention discloses a full distributed copy positioning method used for a data network, wherein, judgment is made at first whether a user command is copy establishment, copy search or copy deletion, and then corresponding operations are respectively performed according to the following steps; judgment is made whether to end after the operations are finished; if continuous operation is required, the user command is accepted after return; if continuous operation is not required, the whole flow is ended; if the user command is copy establishment, physical mapping is registered through a copy catalog manager which is then registered into a local copy manager index; if the user command is copy search, a copy positioning request of a user is received and a mapping table is inquired, and then a physical address set corresponding to a logical file name is returned; if the user command is copy deletion, copy cancel on a routing list is finished through search of the local copy catalog manager index and the copy catalog manager corresponding to a copy. Compared with the prior copy positioning method, the method is characterized in adaptability, support of a copy positioning request of a multiple application domain data network, expansibility, high availability, high security and so on.

Description

technical field [0001] The invention relates to a network technology, in particular to a fully distributed copy positioning method for data grids. Background technique [0002] Integrating distributed, heterogeneous and massive storage resources on the WAN, providing sufficient virtualized storage space, safe and reliable storage mechanism, and efficient and stable transmission mechanism are important functions of the data grid according to user needs. In order to realize the above functions, replica technology is essential. A copy is a copy of a file generated by the source data of the file in the local domain or in the remote domain. The copied file data can be part or all of the source file. File copies are often referred to as data copies. There are also many ways to store data copies. The source file data can be completely stored on a single storage node, or can be divided into multiple data segments (that is, shards) and stored on multiple storage nodes. Data copy g...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F11/14
Inventor 金海齐力曾纯强吴松戴杰范珂
Owner HUAZHONG UNIV OF SCI & TECH
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