Virtual machine provisioning and hot migration procedures, VMM upgrade procedures, and servers

DE602020051870T2Active Publication Date: 2025-05-21ZTE CORP
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Patent Information

Application Number
DE602020051870
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-12-25
Filing Date
2020-12-02
Publication Date
2025-05-21
Estimated Expiration
2040-12-02

AI Technical Summary

Technical Problem

Existing virtual machine migration methods require significant computing resources and time, especially in cloud computing scenarios with large memory spaces, as they involve copying and reallocating memory, making it difficult to upgrade virtual machine monitors (VMMs) without disrupting services.

Method used

A method that establishes a mapping between the host virtual address (HVA) space of a post-upgrading virtual machine and the host physical address (HPA) space of a pre-upgrading virtual machine, allowing the post-upgrading virtual machine to access the same physical memory pages without copying content, thereby reducing resource allocation and migration time.

Benefits of technology

Enables efficient live migration of virtual machines without interrupting services and reduces the time and resource costs associated with upgrading VMMs, even for multiple virtual machines, by modifying page table entries rather than copying entire memory contents.

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Abstract

A virtual machine deployment method, a virtual machine live migration method, a VMM upgrading method, a server, and a computer-readable storage medium are disclosed. The virtual machine deployment method includes: establishing mapping between a host virtual address (HVA) space for a post-upgrading virtual machine and a host physical address (HPA) space for a pre-upgrading virtual machine according to a mapping relationship between a HVA space for the pre-upgrading virtual machine and the HPA space for the pre-upgrading virtual machine. The post-upgrading virtual machine is deployed on a post-upgrading virtual machine monitor (VMM), and the post-upgrading virtual machine is identical in memory configuration with the pre-upgrading virtual machine running on a pre-upgrading VMM (S110).
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