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Online migrating method and system of virtual machine

A virtual machine and purpose technology, applied in the field of network communication, can solve the problems of many times of memory comparison and copying, difficult memory convergence, cloud management platform performance impact, etc., to achieve the effect of simple implementation, reduced impact and pressure

Active Publication Date: 2013-02-13
CHINA TELECOM CLOUD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) This method relies on memory convergence, that is, the copied content becomes less and less, and finally the memory on both sides is exactly the same. This obviously requires many times of memory comparison and copying, especially when the application continuously receives external data or some Some calculations take a long time, the memory is difficult to converge, and the number of memory comparisons and copies is more, which will inevitably affect and pressure the performance of the cloud management platform
[0005] 2) Due to the diversity of applications, it is difficult to find a convergence algorithm suitable for various applications

Method used

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  • Online migrating method and system of virtual machine

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Experimental program
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Embodiment 1

[0046] figure 1 The flow chart of the VM online migration method provided by Embodiment 1 of the present invention, such as figure 1 As shown, the method mainly includes three processes: start migration, migration process and migration end.

[0047] Step 101: The cloud management platform sets the migration module of the switch to host the IP address of the source VM.

[0048] The online migration of the VM is initiated by the cloud management platform. As for the reason for the initiation, the embodiment of the present invention does not limit it. Here, the IP address of the migration module hosting source VM is set to include the following:

[0049] 1) Configure the IP address of the source VM on the migration module of the switch.

[0050] 2) Configure a new IP address for the source VM, and configure a new IP address for the target VM after the installation and startup of the target VM is completed, and notify the migration module. The new IP addresses of the source VM ...

Embodiment 2

[0079] image 3 The system structure diagram of the VM online migration provided by Embodiment 2 of the present invention, such as image 3 As shown, the cloud management platform is a configuration and management platform for data center cloud resources. In this embodiment, it is responsible for the start of migration, the installation and start of the target VM, the takeover configuration of the migration module, the IP address configuration of the source VM and the target VM, and the source VM Memory copy to the destination VM, etc.

[0080] The migration module of the switch is a newly added module in the switch. The switch is a Layer 3 access switch in the data center, and both the source VM and the target VM are connected to the network through the switch. The migration module implements routing control of external sessions during VM migration.

[0081] When starting the migration, the cloud management platform sets the migration module of the switch to host the IP add...

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Abstract

The invention provides an online migrating method and system for a VM (Virtual Machine). The online migrating method comprises the following steps that: when migration begins, a migrating module of a switchboard arranged on a cloud management platform hosts an IP address of a source VM and copies memory data of the source VM to a target VM; in the migration process, the migrating module routes a conversation, which already exists when the migration begins, in conversations related to the hosted IP address, to the source VM and routes a newly-established conversation to the target VM; the cloud management platform releases the IP address hosted by the migrating module when all existing conversations are closed and configures the IP address to the target VM; and the memory data of the source VM and the memory data when the migration begins are compared, and the memory data of the target VM is amended according to the change contents. According to the online migrating method and system, the memory data just needs to be copied once when the migration begins, comparison and amendment of the memory data are carried out once when the migration is ended, and therefore the influence and pressure on the performances of the cloud management platform are reduced; and in addition, a complex convergence algorithm is not needed.

Description

【Technical field】 [0001] The invention relates to the technical field of network communication, in particular to a method and system for online migration of a virtual machine. 【Background technique】 [0002] In recent years, server high-availability cluster technology and virtual server dynamic migration technology have been widely used in data center disaster recovery and computing resource allocation. Under the requirement of uninterrupted dynamic migration of business, the running virtual machine (VM) can be dynamically migrated to the virtual platform of different physical machines. Some server virtualization software can realize the dynamic migration of VM between two virtualized physical servers, and the virtual machine migrated to another center not only retains the original IP address, but also maintains the running state before migration (such as TCP session state). [0003] At present, VM online migration generally adopts the memory copy method. Specifically, an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 谢朝阳侯光华广小明
Owner CHINA TELECOM CLOUD TECH CO LTD