A method for dynamic and transparent switching of virtual machine inter-domain communication modes

Abstract

The invention discloses a dynamic and transparent switching method of a virtual machine inter-domain communication mode, and aims to solve the problem that the existing switching method cannot guarantee user transparency or the communication efficiency is low. The technical solution is to construct an inter-domain communication optimization kernel module in the guest operating system, which consists of five sub-modules: initialization, system call interception, symbiotic VM set maintenance, symbiotic VM judgment, and communication optimization function logout; The symbiotic VM dynamic discovery and release module composed of the symbiotic VM dynamic discovery sub-module and the symbiotic VM release sub-module; the inter-domain communication optimization kernel module and the symbiotic VM dynamic discovery and release module optimize the inter-domain communication of the virtual machine, through dynamic discovery of the symbiotic VM, Intercepting system calls related to network requests realizes transparent switching between local mode and remote mode during inter-domain communication of virtual machines, improves communication efficiency, and supports VM online migration without modifying the operating system kernel.

Description

technical field [0001] The invention relates to a dynamic and transparent switching method of a virtual machine inter-domain communication mode based on system call interception in the fields of cloud computing, operating system and network communication virtualization. Background technique [0002] Virtualization technology has become one of the important enabling technologies in the IaaS (Infrastructure as a Service) layer of the cloud computing environment. It virtualizes the CPU, memory, I / O and other devices of the physical computer through the virtual machine monitor VMM (Virtual Machine Monitor) software, and virtualizes multiple virtual machine VMs (Virtual Machines) on a physical computer (physical machine for short). Machine, also known as a virtual machine domain), each VM runs a guest operating system (Guest OS, client machine). VMM coordinates with a privileged virtual machine domain (Dom0 or Host OS, host machine) to ensure mutual isolation between VMs on the ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in view of the deficiency of the virtual machine inter-domain communication mode switching method of the symbiosis relationship perception in the current Linux system, that is, either the user transparency cannot be guaranteed while supporting the online migration, or the level is lower and the communication mode is lower. The efficiency is low, and a transparent switching method of virtual machine inter-domain communication mode based on system call interception is proposed. This method dynamically discovers symbiotic VMs and intercepts system calls related to network requests (system calls are all provided by the operating system implementation. The set of system calls is the program interface or application programming interface, which is the interface between the application program and the system) to realize the transparent switching between the local mode and the remote mode during the inter-domain communication of the virtual machine, making the user transparent and Communication efficiency can be taken into account. At the same time, this method also has the characteristics of supporting VM online migration and no need to modify the operating system kernel.

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