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Data access method, node and system

A data access and node technology, applied in the field of communication, can solve problems such as metadata server bottlenecks, and achieve the effects of reducing access overhead, high security, and good system scalability

Active Publication Date: 2012-07-18
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the process of realizing the present invention, the inventor found that each access of the existing distributed file system needs to be addressed through the metadata server one or more times, and then access the storage nodes, and the metadata server becomes the bottleneck of the system

Method used

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  • Data access method, node and system
  • Data access method, node and system
  • Data access method, node and system

Examples

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Embodiment Construction

[0048] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0049] method embodiment

[0050] Figure 7 It is a flow chart of Embodiment 1 of the data access method according to the present invention, such as Figure 7 As shown, this embodiment includes:

[0051] Step S102: receiving an access request including a block number identifier;

[0052] Step S104: The pre-established local block unit searches for the corresponding relationship between the block number of the local block unit and the resource information of the storage node providing the storage service according to the block number identifier, and obtains the storage node location corresponding to the block number identifier and the block data identifier; where ...

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Abstract

The invention discloses a data access method, a data access device and a data access system. The method comprises the following steps that: an access request containing a block number identifier is received; a pre-established local block unit searches the corresponding relation between the block number of the local block unit and storage node resource information providing storage services according to the block number to obtain a storage node position corresponding to the block number identifier and a block data identifier; and the local block unit sends the data access request to the storage node according to the storage node position corresponding to the block number identifier and the block data identifier, wherein the storage node resource information comprises the storage node position information and the block number identifier of a storage node. By the method, the device and the system, the problem that a metadata server becomes a bottleneck of the system because the current distributed file system is required to address through the metadata server at every access is solved, and the access efficiency is low is overcome.

Description

technical field [0001] The present invention relates to data service technology in the communication field, in particular, to a data access method, node and system. Background technique [0002] The most common usage of a data storage system is a file system, for example, figure 1 The Chinese file system accesses files through path names, such as / home / myname / novel / novell.txt. The path name is in a namespace, and the path is in a tree space. The tree space represents a certain logical relationship, which is more user-friendly. . The database system is another way of using the storage system. It does not rely on the file system path to reflect the logical relationship, but to represent the logic with "table" or other structures, such as figure 1 In the database system, logic is represented by "table". [0003] Such as figure 1 , the bottom layers of all data storage systems (file systems and database systems) that require random access are built on block devices. The so-...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 王旭罗治国
Owner CHINA MOBILE COMM GRP CO LTD
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