Operating system hot backup method, device and file system reconstruction method

Abstract

The invention relates to the field of information security, and discloses an operating system hot backup method, device and file system reconstruction method. In the present invention, the data block is directly backed up instead of the file. If there is an overwriting write operation in the backup process, the data block to be overwritten is saved in a temporary file before overwriting. When backing up, if the data block exists in In the temporary file, the data blocks in the temporary file are directly backed up, so that the data blocks backed up are all the data at the moment when the backup starts, ensuring the integrity and consistency of the backup data, and in the process of backing up the operating system The operating system still works fine. Based on the driver-level data block backup technology, it adds perfect support for incremental backup and differential backup, which can save storage space, and the backup speed is also faster.

Description

technical field [0001] The invention relates to the field of information security, in particular to operating system hot backup and recovery technology. Background technique [0002] With the rapid development of science and technology in today's society, Windows operating system is the mainstream of desktop operating system, and the demand for system disaster recovery is becoming more and more important. There is basically no similar research on the backup of Windows operating system in China. The backup performed, that is, cold backup, cannot satisfy system backup during the running of the operating system. [0003] Here, it should be noted that the cold backup of the operating system refers to the backup of the operating system in a non-running state. [0004] The prior art backs up the system by backing up files, but this technology has the following disadvantages: [0005] (1) When backing up files, there is a phenomenon that the files are opened exclusively by other ...

AI Technical Summary

Problems solved by technology

[0005] (1) When backing up files, there is a phenomenon that the files are opened exclusively by other programs and cannot be backed up;

[0006] (2) File backup cannot back up some system files;

[0007] (3) File backup cannot fully guarantee data consistency. For example, when backing up a file, the user modifies all the content of the file when the first half of the file is backed up. The upper part is before modification, and the lower part is after modification, so there are data inconsistencies between the upper and lower parts;

[0008] (4) File backup cannot back up files that have been deleted but not cleared in the recycle bin;

[0009] (5) The speed of file backup is relatively slow;

[0010] (6) If the folder depth of the file is too deep, it may consume a lot of memory or even cause the program to crash;

[0011] (7) File-level backup is difficult to support incremental backup and differential backup

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