Cache data restoration method

Abstract

The invention is a cached data restoring method, applied to a computer device using Linux operating system, where the computer device has a backup battery which supplies backup power to data storage in cache memory, able to fast, safely and effectively register data backup without largely modifying memory management core of the Linux system so as to avoid the problems: operating efficiency of the computer device is lower, design and manufacturing costs increase, the cached contents can not be stored because Linux initializes the memory at each startup, and also able to let the cached data in the cache memory restored into harddisk in the restart course after abnormal power-off but unable to influence the Linux operation system's own structure.

Description

technical field [0001] The invention relates to a technique for protecting cached data from being lost due to power failure, in particular to a method for restoring cached data for continued storage of data in the cache through backup power. Background technique [0002] Nowadays, with the rapid development of information technology, computers have become an important source of information and an important data storage medium. In the process of using computer equipment, the operating system is indispensable. The assistance of the operating system can provide users with operational convenience. Therefore, the quality of the operating system design is related to the convenience and hardware of the user during operation applicability itself. The most important part of the operating system is data access. When the user operates the computer, the internal cache of the computer will temporarily store the data used by the user to improve the operating performance of the computer....

AI Technical Summary

Problems solved by technology

[0003] In view of this, in order to avoid data damage when the above situation occurs, battery backup technology and related hardware devices have been produced. These technologies are based on rewriting the memory management mechanism of Linux, and then use battery auxiliary power to save the memory. The internal temporary storage data, the memory management mechanism is to first define a continuous block contained in the memory, and make all the cached data be accessed through the defined block. Once a power failure occurs, the computer That is, read the data that has not been written back to the disk in the continuous block when starting up, and write it back to the disk. This method needs to change the memory management core inside the computer and redefine the address of the memory block. If the memory management of the computer is changed There is something missing in the design, the result is not only that the cache data cannot be written back, but it may also cause errors during the execution of the general program. The problem caused by this result is far more serious than the loss of data, and this method is used to restore the cache It takes more manpower and time to store data

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