A system backup and restore method based on btrfs file system

Abstract

The invention relates to a system backup and restoring method based on a Btrfs file system. The method comprises the two steps of system backup and system restoring, wherein the system backup comprises the following steps: backing up an initial operation system by utilizing a Btrfs file system performance and establishing a plurality of snapshots; reading a default linkage under a first level catalog of the partition after starting the initial operation system; reading files appointed to the snapshots by the default linkage, forming a sequence for entering into the plurality of snapshots, starting a computer again and then entering the initial operation system under a default mode. According to the invention, the Btrfs file system performance is utilized to establish a new backup system; the required time is short; no additional space is required for storing the backup data; the restoring system is also completed within a short period of time; the computer can enter the backup system by restarting after restoring; the other operation of the user is not required; the practical application requirement can be met.

Description

technical field [0001] The invention belongs to the technical field of computer system backup, and in particular relates to a system backup restoration method based on a Btrfs file system. Background technique [0002] Currently existing backup and restoration tools, whether it is a full backup or an incremental backup, all copy system files and user files to a storage area. The restoration system is to copy the previously stored data back to the original place and replace the existing files. . This practice takes up a lot of disk space and takes a lot of time. When the system crashes, users need to have a certain technical foundation to restore the system, which is not user-friendly. And the stored backup data is only part of the system data, not a complete system. At the same time, the user only has a complete operating system. The defect of the prior art is: the existing backup tool takes a long time to back up the system, and additional space is needed to store the ba...

AI Technical Summary

Problems solved by technology

The defect of the prior art is: the existing backup tool takes a long time to back up the system, and additional space is needed to store the backed up data; for ordinary users, the use of backup and restoration requires a certain technical foundation, especially for restoring the system after a system crash; Some backups are actually incremental data backups of the operating system, rather than a complete operating system. The backup data is invisible to the current system, that is, other backup data cannot be accessed in the current system, and the system must be restored to This backup is only accessible

Images