Method for organizing dummy catalog and managing naming space for distributed file systems

Abstract

The invention relates to a DFS (distributed file system) virtual directory organization and name-space management method including the following steps: file metadata of the file system is adopted according to a user inquiry request and a context to compute on-demand and dynamically generate the virtual directory in the relational algebra means so as to provide file serves matching the present context in hierachical form of the virtual file view for the user; the operations of creating, deleting, moving, renaming, opening, closing, reading, writing and cutting to files and operations of creating, deleting and renaming to context directories can be carried out in the virtual directory name-space. The invention has the beneficial effects that the adoption of the computed on-demand and dynamically generated virtual directory in a large-scale mass file storage system overcomes the defect that the traditional hierachical directory structure cannot provide services on demand, and provides the high effective file search and organization form. The adoption of file metadata including file attributes and contexts in the organization process of the virtual directory can actively provide file serves for the user according to the changing of the contexts.

Description

Technical field [0001] The invention relates to the field of file systems, in particular to a communication method between an intelligent micro-small ground robot and a wireless sensor node. Background technique [0002] Traditional file systems use hierarchical directory structure namespaces to organize and manage files. The hierarchical directory structure has the advantages of being easy to understand and easy to navigate. However, the traditional hierarchical directory structure has the following two deficiencies: First, the traditional hierarchical directory is the real structure written in the physical sector of the disk, and the path name of the namespace only reflects the single attribute of the file location in the namespace, that is, the single attribute. Inheritance, users can only access the file by remembering the physical path of the file. Second, the increase in storage capacity and the explosive growth of the number of stored files have made the directory hierarch...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the hierarchical directory structure namespace of the traditional file system cannot meet the needs of large-scale massive file data organization and management services in a pervasive environment, and provide a method for virtual directory organization and namespace management of a distributed file system. It can use file metadata such as file attributes and context, calculate and dynamically generate virtual directories on demand in the form of relational algebra according to context and user query requests, and support the management of virtual directory namespaces

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