Flash memory partition data processing method and device, computer equipment and storage medium

Abstract

The invention relates to a flash memory partition data processing method and device, computer equipment and a storage medium. The method comprises the steps that when it is detected that a first incremental file exists in a target subdirectory for mounting a temporary file system, a timer is triggered to conduct timing from an initial preset value; when the timing value of the timer is a target preset value, compressing the file carrying the first incremental file and resetting the timer to obtain a compressed file; generating a file writing instruction; the file writing instruction carries file writing strategy data; writing the compressed file into a first backup directory of a first logic erasing block of the application partition based on the file writing strategy data to obtain a first backup file; and writing the first backup file into a second backup directory of a second logic erase block of the application partition to obtain a second backup file, and completing processing of the flash memory partition data. By adopting the method, system abnormity caused by loss of important data in the flash memory partition during abnormal power failure of the system can be avoided.

Description

technical field [0001] The present application relates to the field of embedded technology, in particular to a partition data processing method, device, computer equipment and storage medium. Background technique [0002] With the development of source code and the maturity of technology, Linux system is widely used in embedded design. The configuration data and log information of the embedded system are generally stored in the flash memory. The Linux system directly mounts some partitions in the nandflash to the corresponding directory, and then the user program modifies the files in the corresponding directory, and the files are stored in the form of binary data in the In nandflash. [0003] However, at present, the user program reads and writes files in the specified directory. When performing a read operation, the data is copied from the kernel cache to the user program. When performing a write operation, the data is copied from the user program to the kernel cache, and...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the user program reads and writes files in the specified directory. When performing a read operation, the data is copied from the kernel cache to the user program. When performing a write operation, the data is copied from the user program to the kernel cache, and then the kernel writes the data. In the flash, when the kernel has not written the data back to the flash, the power is turned off, resulting in the loss of the data in the kernel cache, and the system starts abnormally

Images