UBIFS-based data automatic restoration method and apparatus

Abstract

Embodiments of the invention disclose a UBIFS (Unsorted Block Image File System)-based data automatic restoration method and apparatus. The method comprises the steps of obtaining partition mounting detection data of a UBIFS, and determining a damaged partition which is mounted abnormally; erasing and remounting the damaged partition which is mounted abnormally; and obtaining to-be-checked file information stored in a file check list, checking a to-be-checked file in a check code-based check mode, and if the check fails, replacing the file checked unsuccessfully with a backup file corresponding to the file checked unsuccessfully. The technical problem that the system cannot run due to the fact that the stability of an asynchronous update mechanism cannot be ensured and the situation that key files are lost or partition mounting failure occurs easily occurs due to a reason of power failure caused by equipment exception in actual use of the UBIFS is solved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a UBIFS-based data automatic repair method and device. Background technique [0002] In embedded systems, NANDFLASH is widely used due to its low cost and small size, and NANDFLASH itself has some special physical characteristics: page block structure, erase before writing, and erase and write restrictions. In order to ensure the reliable operation of NANDFLASH, a special file system is required. [0003] Linux is one of the most commonly used embedded systems. Most of the Linux-oriented flash file systems are designed based on log-structured file systems. Log-structured file systems do not use local update methods, but asynchronous update methods. UBIFS (unordered block mirror file system) is a new generation of flash file system in Linux system. As the successor of JFFS2, UBIFS mainly solves the problems of long mount time, large memory consumption and scalability of JFFS2 f...

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Problems solved by technology

[0004] The invention provides a UBIFS-based data automatic repair method and device, which are used to solve the problem that in actual use, due to the abnormal power failure of the equipment, the stability of the asynchronous update mechanism cannot be guaranteed, and key files are prone to be lost or appear. The partition mount fails, which leads to technical problems that the system cannot run

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