Method and server for hot migration of virtual machine

A virtual machine and server technology, which is applied in the information field and can solve problems such as data migration.

Active Publication Date: 2015-12-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a method and device for live migration of virtual machines to solve the problem in the prior art that data cannot be migrated during live migration of virtual machines

Method used

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  • Method and server for hot migration of virtual machine
  • Method and server for hot migration of virtual machine
  • Method and server for hot migration of virtual machine

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Embodiment Construction

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0046] In order to solve the problem that the hot migration of virtual machines cannot be realized in the SR-IOV technical scenario in the prior art, an embodiment of the present invention discloses a method for hot migration of virtual machines.

[0047] reference figure 1 , figure 1 It is a schematic flowchart of a method for virtual machine hot migration according to an embodiment of the present invention, and the method includes:

[0048] Step 100...

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Abstract

Embodiments of the present invention provide a method and server for live migration of a virtual machine, so as to solve the problem that the live migration of a virtual machine cannot be realized in an SR-IOV technical scenario. In the virtual machine live migration method and server of the embodiments of the present invention, by setting the write dirty flag, the virtual PCIE device of the virtual machine to be migrated performs at least one read and write operation on the received data, and the virtual machine to be migrated The virtual machine manager can identify the change of data and migrate the changed data to the target virtual machine, which solves the data problem caused by the fact that the data passes through the virtual PCIE device and the virtual machine manager cannot perceive the data during the live migration process of the virtual machine in the prior art. Unable to migrate question.

Description

Technical field [0001] The present invention relates to the field of information technology, in particular to a method and server for virtual machine hot migration. Background technique [0002] SR-IOV (Single-Root I / O Virtualization, single-root IO virtualization) is an IO virtualization technology that can virtualize multiple virtual devices on a physical PCIE (PeripheralComponent Interconnection Express English, Fast Peripheral Component Interconnection Standard) device PCIE devices, virtual PCIE devices can only be configured and managed through the original physical PCIE devices, each virtual PCIE device can have independent interrupts and DMA (DirectMemoryAccess, direct memory access), so that the virtual machine can be accessed directly through the virtual PCIE device The physical PCIE device does not require the intervention of VMM (Virtual Machine Monitor, virtual machine monitor). Taking a network card that supports SR-IOV as an example, each virtual PCIE device corres...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G06F9/455G06F9/48
CPCG06F2009/45579G06F9/5077G06F9/45558G06F9/4856G06F13/28G06F13/4221G06F2009/4557G06F9/5016
Inventor卢胜文
OwnerHUAWEI TECH CO LTD