A file storage system with fixed space allocation and its realization method

Abstract

The invention belongs to the technical field of network multimedia and particularly relates to a space allocation fixing file memory system and an implementation method. The space allocation fixing file memory system comprises a system initialization module, a file unit and a read / write module, wherein the system initialization module is used for obtaining disk information and allocating fixed space for files; the file unit comprises a header file and a data file, wherein the header file records an information list of the data file, and the data file comprises an index section and a data section; and the read / write module is mainly used for obtaining the data file to be read / written through inquiring the information list of the header file, inquiring the using information and address information recorded in the index section of the data file so as to obtain the address to read / write the data, and reading / writing the data according to the address. According to the method, all the space is allocated fixedly in advance, therefore the index operation for the whole disk is reduced, and timeliness and stability of the file memory system are improved to a great extent.

Description

technical field [0001] The invention belongs to the technical field of network multimedia, and in particular relates to a file storage system with fixed space allocation and an implementation method. Background technique [0002] Most of the existing data storage systems are file-based storage systems, and the stability of stored data is mainly based on the file system itself. In this file-based storage system, there is a file index area, which stores all relevant information of data, including location, size, storage time, and so on. In the process of data storage, the file index information needs to be continuously rewritten. In this case, when a sudden power failure or system crash occurs, the file index information will not be saved in time in the future, which may lead to the collapse of the entire file storage system. Especially in some special storage devices, such as SD cards, the stability of data has a very large relationship with the number of reads and writes of...

AI Technical Summary

Problems solved by technology

In the process of data storage, the file index information needs to be continuously rewritten. In this case, when a sudden power failure or system crash occurs, the file index information will not be saved in time in the future, which may lead to the collapse of the entire file storage system. Especially in some special storage devices, such as SD cards, the stability of data has a great relationship with the number of reads and writes of physical data blocks.

[0003] At present, raw devices can be used as the basis for storage system design to solve the stability of stored data. The method of raw devices is to treat the entire storage area as a space, and designers can read and write data according to their own specifications. The underlying development needs Based on the interface provided by the operating system, for the development of the upper layer, the operation interface of the bare device is often invisible, which greatly increases the difficulty of development

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