Method, device, electronic equipment and medium for online incremental backup and restoration of virtual machine

Abstract

The invention discloses a method and application for online incremental backup and recovery of a local storage virtual machine. The method includes the following steps: generating the incremental file and position information of the backup node at the current moment of the virtual machine disk through an external snapshot; according to the Send the incremental file to the specified location of the backup server for storage according to the location information; and organize the incremental file of the backup node of the virtual machine disk at each execution time into a backup chain and save it in the database. The method of online incremental backup of the local storage virtual machine can generate the incremental file and location information of the virtual machine disk at the backup time through the external snapshot. In the scenario of diversified backup strategies, the backup chain presents a forest structure, realizing multiple Scenario incremental backup effectively improves system disk space utilization and backup efficiency.

Description

technical field [0001] The present invention relates to the field of computers, in particular to a method and application for online incremental backup and recovery of locally stored virtual machines. Background technique [0002] With the expansion of the cloud platform, the cloud platform faces these challenges: the soaring amount of cloud storage data, the increasing requirements for the reliability of cloud platform data storage by enterprises and individual users, and the problems existing in the management of data storage and backup on the current cloud platform and the challenges it faces. [0003] Most of the existing virtual machine disk backups are proxy-based backup and recovery. Backup agent software needs to be installed in the virtual machine to realize the backup and recovery of virtual machine disk data, which not only affects the performance of the virtual machine, but also cannot guarantee the security of the virtual machine data. sex. Virtual machine dis...

AI Technical Summary

Problems solved by technology

The traditional backup point management model takes the closest backup point of the virtual machine disk as the core, organizes the backup points into a linear structure according to the backup time and policy relationship, and manages them in groups in a single-chain manner. However, in practical applications, diverse The backup strategy makes backup points have various forms of association, that is, multi-chain association characteristics, which leads to the following problems in the traditional backup point management model: single backup chain management, historical time points need to be manually managed and archived; backup Recovery takes a long time, the automatic deletion strategy is not flexible enough, and the disk space utilization is low, etc.

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