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Metadata management method based on DBMS and metadata server

A metadata server and management method technology, applied in the field of metadata server and metadata management, can solve the problems of poor flexibility, high time and space overhead, etc., and achieve the effects of easy expansion, reduced time and space overhead, and improved flexibility

Inactive Publication Date: 2010-07-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problems of high time and space overhead and poor flexibility in the metadata management method in the mass storage system, provide a method for efficiently managing metadata, and construct a metadata management method for the mass storage system server

Method used

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  • Metadata management method based on DBMS and metadata server
  • Metadata management method based on DBMS and metadata server
  • Metadata management method based on DBMS and metadata server

Examples

Experimental program
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Embodiment 1

[0057] Such as figure 1 As shown, a metadata server based on DBMS includes a metadata database system, a device for receiving metadata requests, a device for converting metadata requests, and a device for returning metadata. The metadata database system is used to save and manage metadata in the mass storage system, the receiving metadata request device is used to receive the metadata request sent by the host, and the converting metadata request device is used to convert the metadata request into operation metadata database The SQL statement, the means for returning the metadata is used to return the operation result on the metadata to the host.

[0058] In this embodiment, on the basis of the existing metadata server, methods for organizing, modifying and searching metadata, and adding a metadata database system and a metadata conversion request device constitute the metadata server for mass storage systems of the present invention.

[0059] The structure of the metadata dat...

Embodiment 2

[0064] Such as figure 2 Shown, a kind of metadata management method based on DBMS comprises the following steps:

[0065] 1. Establish a database for storing metadata, and organize metadata with two-dimensional tables; 2. Receive metadata requests, 3. Convert metadata requests; 4. Return metadata; among them, organize metadata steps and convert metadata with two-dimensional tables The request step is what differentiates it from existing metadata management methods.

[0066] Step 1 may specifically include the following procedures:

[0067] (1) Install DBMS software in the metadata server, and establish a database system for storing metadata of mass storage systems.

[0068] (2) Create a File table in the database: save the basic information of the file and directory, ID is the unique identifier of the file or directory, PathName is the access path and file name of the file or directory, and DPID is the identifier of the upper directory of the file.

[0069] (3) Create a Fi...

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Abstract

The invention provides a metadata management method based on DBMS and a metadata server. The metadata server is provided with DBMS for building and saving the metadata database of a mass storage system; five two-dimensional tables are built for storing metadata; after analysis, a metadata request is converted into a group of SQL statement which operates the metadata database so as to build the novel metadata database server for the mass storage system. The invention analyzes time and space consumption needed by performing typical metadata operation, manages the flexibility of metadata, verifies that the invention can reduce time and space consumption needed by managing metadata in the mass storage system, and improves the flexibility of managing the metadata.

Description

technical field [0001] The invention belongs to the technical field of storage, relates to a mass storage system therein, and specifically relates to a metadata server and a metadata management method. Background technique [0002] Mass storage systems need to save Terabyte, Petabyte-level or even larger-scale data, and the amount of metadata in the mass data itself is also very large. In order to meet the requirements of high I / O performance and management flexibility in mass storage systems, how to manage mass storage It is an important issue to identify the metadata of the system and design the corresponding metadata server. [0003] The metadata of the data in the mass storage system, such as file names, attributes, and access authorization, etc., need to be managed centrally by the metadata server. When accessing data in a mass storage system, you first need to access the metadata server, query the metadata of the file using information such as the file name, and obtai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 牛德姣蔡涛鞠时光
Owner JIANGSU UNIV
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