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On-line migration method, device and system of virtual machine

A virtual machine and computer technology, applied in the computer field, can solve the problems of reducing the online migration efficiency of virtual machines, taking a long time in the pre-copy stage, increasing the amount of data, etc. The effect of reducing the amount of data

Active Publication Date: 2017-03-01
BEIHANG UNIV
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Problems solved by technology

[0006] It can be seen that in the existing hybrid copy method, the entire disk block needs to be copied in the pre-copy stage, and the pre-copy stage takes a long time, resulting in more dirty block data on the disk, thereby increasing the amount of data that needs to be retransmitted, reducing Improve the efficiency of virtual machine online migration

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Embodiment Construction

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0060] The disk working set involved in this application refers to: the set of disk blocks that the process of the source virtual machine needs to access within a preset time period; A collection of disk blocks other than the set.

[0061] The memory page dirty data involved in this application refers to: the Linux operating system uses the memor...

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Abstract

The invention provides an on-line migration method, device and system of a virtual machine. The method comprises the steps of acquiring a preset number of magnetic disk block data in a magnetic disk working set of a source virtual machine, and writing the preset number of magnetic disk block data in a cache; transmitting the preset number of magnetic disk block data to a target host computer, and transmitting memory page data of the source virtual machine to the target host computer; determining a copy mode of magnetic disc dirty block data in the magnetic disk working set and memory page dirty data of the source virtual machine when the memory page dirty data converges to a preset threshold value during transmission process of the memory page data; transmitting the magnetic disk dirty block data in the magnetic disc working set and / or the memory page dirty data of the source virtual machine to the target host computer according to the copy mode of the magnetic disk dirty block data in the magnetic disk working set and the memory page dirty data of the source virtual machine; and transmitting magnetic disk block data in a non-magnetic disk working set to the target host computer. Therefore, the on-line migration efficiency of the virtual machine is improved.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a virtual machine online migration method, device and system. Background technique [0002] Cloud computing provides users with on-demand, flexible, and scalable computing and storage resources through computer networks; with the development of cloud computing, it has become increasingly important for customers to access applications and data on-demand through the cloud. and service mode. Clouds are divided into: private cloud, public cloud, and hybrid cloud. Among them, public cloud is a cloud facing the public that is independent of the enterprise company, private cloud is a cloud that faces the organization, and hybrid cloud is a combination of two or more private clouds or public clouds. The infrastructure formed by the cloud; the hybrid cloud has the characteristics of flexibility, security and elasticity, and is the development trend of cloud computing system dep...

Claims

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Application Information

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IPC IPC(8): G06F9/455G06F9/48
CPCG06F9/45558G06F9/4856G06F2009/4557
Inventor 李博何珊师斌刘建龙
Owner BEIHANG UNIV
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