State information synchronization method, state information synchronization device and state information synchronization system for virtual machine

Abstract

The invention discloses a state information synchronization method of a virtual machine. The method is applied to a tolerant system of the virtual machine. The fault tolerant system of the virtual machine comprises a source host and a destination host, wherein a main virtual machine operates on the source host, and a standby virtual machine operates on the destination host. When the source host synchronizes state information of the main virtual machine to the destination host, The method comprises the following steps: pausing the main virtual machine, and storing the state information of the main virtual machine into a storage unit of the source host; starting to operate the main virtual machine which is in a pause state; when the main virtual machine is in an operation state, acquiring the state information of the main virtual machine from the storage unit, and sending the state information of the main virtual machine to the destination host so as to enable the destination host to update the state of the standby virtual machine according to the state information of the main virtual machine. The state information synchronization method for the virtual machine, provided by the embodiment of the invention, can be used for effectively shortening the pause time of the main virtual machine and thus improving the calculation performance of the main virtual machine.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method, device and system for synchronizing state information of a virtual machine. Background technique [0002] Virtual machine fault tolerance is a key technology in the field of virtualization. Its purpose is to switch the business to the standby virtual machine to run on the standby virtual machine in order to ensure zero interruption of key services and zero data loss in the case of a hardware failure that causes the primary virtual machine to go down. . In order to ensure that the standby virtual machine can replace the primary virtual machine at any time, it is necessary to periodically synchronize the state information of the primary virtual machine to the secondary virtual machine, so that when the primary virtual machine fails, the secondary virtual machine can replace the primary virtual machine in time. [0003] However, in the prior art, when synchroniz...

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, when synchronizing the state of the primary virtual machine to the standby virtual machine, it is necessary to suspend the primary virtual machine, and then the source host sends the state information of the primary virtual machin

Images