Method for organizing and accessing distributive catalogue of document system

A distributed file and system directory technology, applied in the field of organizing and accessing distributed file system directories, can solve problems such as unsatisfactory distributed file systems, and achieve the effect of avoiding repeated reading of directory items or missing directory items

Inactive Publication Date: 2005-05-11
广州信瑞医疗技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the fact that none of the existing technologies can meet the needs of distributed file systems to efficiently support large directory operations, it is of great significance to propose a technology for efficiently organizing and accessing directories

Method used

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  • Method for organizing and accessing distributive catalogue of document system
  • Method for organizing and accessing distributive catalogue of document system

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Embodiment Construction

[0074] figure 1 The typical structure of the distributed file system, the distributed file system consists of multiple servers and multiple clients. According to functions, servers can be logically divided into metadata management servers and storage servers.

[0075] figure 2 The labels in the index file are all binary numbers. The labels of directory entry blocks given below are also binary numbers.

[0076] figure 2 A schematic diagram of the directory block splitting process is given. figure 2 (1) The sub-picture is the index file and directory entry file structure when the effective bit is 1, and the dark gray block Blk1 corresponding to the index structure with the serial number 1 indicates that the directory entry block is full, and it needs to be split into two pieces at this time , the newly added block Blk2 allocates storage space directly from the end of the directory entry file (executes the append operation on the directory entry file), and assigns its off...

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Abstract

An organization and access method of directory for distributed file system includes applying dynamic expandable Hash technique to organize file system file directory, using Hash list and directory content in two local file systems as Hash list being enabled to expend dynamically and having up limit for Hash value effective bit to realize a serial search method according to width of directory effective bit in order to avoid repeated fetch and missed fetch.

Description

technical field [0001] The invention relates to the technical field of computer storage systems, in particular to a method for organizing and accessing distributed file system directories. Background technique [0002] With the rapid development of computer technology and the increasing amount of information, storage systems have become the bottleneck of computer systems, especially large-scale distributed computer systems. The distributed file system can manage the storage system conveniently and effectively, and give full play to the performance of the storage subsystem. attached figure 1 A typical structure of a distributed file system is given, which consists of multiple servers and multiple clients. According to functions, servers can be logically divided into metadata management servers and storage servers. [0003] The researchers found that in most current applications, the number of metadata operations is far greater than the number of ordinary file reads and wri...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 唐荣锋孟丹吴思宁
Owner 广州信瑞医疗技术有限公司
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