Uninterruptedly running virtual machine migrating method and device

Abstract

The invention discloses an uninterruptedly running virtual machine migrating method and an uninterruptedly running virtual machine migrating device. The method comprises the following steps of: 1) connecting a migration node and a target node through a network; 2) caching an operation request of a virtual machine and a return state of equipment in the migration node, and freezing the virtual machine of the migration node; 3) copying the virtual machine of the migration node onto the target node, and arousing a new virtual machine of the target node; and 4) sending the operation request and the return state which are cached by the migration node to the target node through the migration node, wherein the target node distributes the received operation request and the operation request of the new virtual machine to equipment, and sends the received return state and the return state which is acquired from the equipment to the new virtual machine of the target node. The device comprises an equipment agent unit which is arranged in a privilege domain of the migration node and the target node and comprises an equipment access control module. The method and the device have the advantages of quick and reliable migration, wide application range, high availability, high fault-tolerant capability and high commonality.

Description

technical field [0001] The invention relates to the technical field of computer virtualization, in particular to a virtual machine dynamic migration method and device capable of ensuring uninterrupted operation. Background technique [0002] With the rapid development of computer hardware, network and architecture, virtualization technology has penetrated into various fields, and presents a new development trend, from server virtualization to storage virtualization, and even application virtualization, virtualization technology has become new research hotspot. At the same time, virtualization technology also faces new challenges in terms of management, application and security. While virtualization technology saves us energy consumption, it also brings about a major problem—single point of device failure, and virtual machine live migration is an effective solution to the problem of single point of device failure in virtual machine devices. This scheme creates multiple virt...

AI Technical Summary

Problems solved by technology

Especially when the virtual machine of the migration node M1 is frozen, the device driver of the virtual machine and the communication channel between the devices are suspended, and when the user makes access or other operation requests to devices such as I / O, most of these operation requests Stuck in the privileged domain of the migrating node M1 or lost

Because of this, during the virtual machine dynamic migration process, the virtual machine system has a downtime, which will cause a short interruption of the virtual machine's external services and device access, which will cause the virtual machine to lose some operation requests and return status, reducing The availability of virtual machines and the continuous accessibility of virtual machines

In virtual environments such as blade servers and data centers, many key server applications that have high requirements for high availability and uninterrupted service operation capabilities, this situation will undoubtedly not meet the needs

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