Novel metadata server cluster and metadata management method based on reconciliation statement

A metadata server and management method technology, which is applied in the fields of mass storage systems, metadata server clusters and metadata management, can solve the problems of poor flexibility, high time and space overhead, etc., to avoid changes, reduce time and space overhead, The effect of reducing the load

Inactive Publication Date: 2011-01-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of high time and space overhead and poor flexibility in existing metadata management methods, provide a method for efficiently managing metadata in metadata server clusters, and construct a new type of metadata server cluster

Method used

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  • Novel metadata server cluster and metadata management method based on reconciliation statement
  • Novel metadata server cluster and metadata management method based on reconciliation statement
  • Novel metadata server cluster and metadata management method based on reconciliation statement

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A novel metadata server cluster, including a client device, a metadata access request analysis device, and a metadata search device; between the metadata access request analysis device and the metadata search device, there is a metadata server search device based on an adjustment table , for reasonably distributing metadata access requests to corresponding metadata servers, reducing the time and space overhead required for metadata management.

[0033] The description of each function in the metadata database system is shown in Table 2:

[0034]

[0035] The client device includes a metadata acquisition module and a metadata update module, the metadata acquisition module is used to receive the metadata search result, and the metadata update module is used to update the metadata information stored in the metadata server cluster.

[0036] The metadata access request analysis device includes a hash value calculation module, which is used to calculate the hash value corr...

Embodiment 2

[0040] like figure 1 As shown, a metadata management strategy based on an adjustment table includes the following steps:

[0041] 1. Analyze the request sent by the client, hash the file path, and obtain the corresponding hash value; 2. Use the hash value as a keyword to find the adjustment table, obtain the metadata server ID, and feed it back to the client ;3. The client sends a metadata operation request to the corresponding metadata server; 4. The metadata server completes the corresponding operation and feeds back the result to the client; 5. Regularly dynamically modifies the adjustment table according to the operation status of the metadata server cluster Optimize the performance of metadata server clusters. The key is to use the hash value as a keyword to search the adjustment table to obtain the identifier of the metadata server and how to dynamically adjust the adjustment table.

[0042] Step 2 may specifically include the following procedures:

[0043] (1) Use th...

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PUM

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Abstract

The invention discloses a metadata management method based on a reconciliation statement, which comprises the following steps: managing the metadata by a metadata server cluster, and after calculating Hash value by using document route, obtaining the corresponding metadata server identification by searching the reconciliation statement. The invention gives out the reconciliation statement regulation strategy under a plurality of typical situations, the novel metadata server cluster structure and introduces the flow of main functional modules. The invention can rapidly eliminate a hot spot metadata server in the metadata server cluster aiming at problems of the metadata management, is convenient for the system adjustment after adding and deleting the metadata server, reduces pay expenses of the time and space required for the metadata management, and improves flexibility of metadata management.

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 cluster and a metadata management method. Background technique [0002] When a large-scale storage system uses a single metadata server to centrally manage metadata, the I / O performance of the system will be severely restricted by the single metadata server. In order to meet the requirements of high I / O performance and management flexibility of mass storage systems, how to manage the metadata of mass storage systems and design corresponding metadata servers is an important issue. [0003] When metadata server clusters are used to manage metadata in a distributed manner, directory subtree partitioning and file hashing algorithms are commonly used. In 1986, the Directory Subtree Partitioning algorithm proposed by Popek et al. of the Massachusetts Institute of Technology divides the hierarchical directory struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 蔡涛牛德姣李秀娟鞠时光
Owner JIANGSU UNIV
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