A virtual machine hot backup method and device

Abstract

An embodiment of the invention provides a virtual machine warm backup method and equipment, and relates to the field of information communication. Impacts on customer services during backup of a virtual machine can be effectively reduced, and usability of virtual machine services is improved. The method includes acquiring a dirty data volume generated by current services of a main virtual machine, comparing the dirty data with a first threshold value and a second threshold value, wherein the second threshold value is larger than the first threshold value, generating a check point according to a comparison result, and updating the state of a finite state machine according to the dirty data volume and a preset cycle time in the finite state machine so as to perform data warm backup, corresponding to the state of the finite state machine, on the generated check point of the main virtual machine according to the state of the finite state machine. The virtual machine warm backup method and equipment are applied to data warm backup of the virtual machine.

Description

technical field [0001] The invention relates to the field of information communication, in particular to a virtual machine hot backup method and device. Background technique [0002] With the popularity of virtualization technology applications, the high reliability of virtual machines has become the focus of attention. Virtual machine hot backup technology, also known as virtual machine FT (Fault Tolerance, fault tolerance), with the help of the virtual machine itself can be transplanted across platforms and has nothing to do with the underlying hardware, it realizes a high-efficiency and low-cost virtual machine fault-tolerant mechanism, and has become One of the important means to ensure the high reliability of virtual machines. [0003] In order to realize data synchronization, traditional virtual machine dual-machine hot backup adopts the strategy of temporarily terminating virtual machines and services. Usually, the Primary-Backup (active-standby) method synchronizes ...

AI Technical Summary

Problems solved by technology

In this way, for a client program that generates a large amount of dirty data between adjacent Checkpoints, the main virtual machine will hang for a long time when the Checkpoint is generated, making the client program unable to run

In addition, for client programs that only generate little dirty data between adjacent Checkpoints, Checkpoints that frequently transmit a small amount of information will affect the normal operation of the client program due to resource competition between Dom U (virtual machine) and Dom0 (virtual machine management program). Execution, resulting in greatly reduced performance and availability of dual-machine hot standby

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