Data writing method, data reading method and corresponding devices

Abstract

The invention provides a data writing method, a data reading method and corresponding devices. The disk is divided into a super block region, a data information block region and a reserved data information block region according to a sequence from an outer volume to an inner volume. Most areas inside the disk outer volume are divided into data information block areas, so that the data informationblock areas cover the outer volume of the disk, and the data information block areas fully utilize the performance of quickly writing data into the disk outer volume. Moreover, when the data is written in, according to the identified information block, a data information block of the to-be-written data in a data information block area of the disk is found out; the to-be-written data is written into the data block in the data information block; and the information of the marked information block corresponding to the to-be-written data in the memory system is written into the information block in the data information block, so that the to-be-written data and the information of the to-be-written data in the memory system can be written into the data information block in the disk by addressingonce.

Description

technical field [0001] The present invention relates to the field of computer technology, and more specifically, to a method for writing and reading data and a corresponding device. Background technique [0002] A magnetic disk is a storage device external to a computer that works like a magnetic tape device. The structure of the disk is to seal the circular magnetic disk in a square box to prevent scratches on the surface of the disk, thereby avoiding the loss of disk data. The disk can manage and store data based on the file management system in the operating system. Currently, the data structure of the disk is sequentially composed of a super block, an index block area, a data block area and a reserved data block area from the outer volume to the inner volume. Among them, the super block is distributed on the outermost volume, the index block area is distributed next to the super block on the outer volume, and the remaining data block area and reserved data block area a...

AI Technical Summary

Problems solved by technology

However, the outer volume of the disk is not used for writing data but for indexing, which reduces the read and write performance of the disk.

Images