Communication method and device between virtual machines, physical host and medium

Abstract

The invention discloses a communication method and device between virtual machines, a physical host and a medium, and the method comprises the steps: reading a to-be-transmitted original data packet in a target shared memory corresponding to a first virtual machine when it is monitored that a device driver corresponding to the first virtual machine performs write operation on an I / O notification register in a PCIe device corresponding to the first virtual machine; determining an IP address of a second physical host of the receiver based on a second virtual machine identifier in the to-be-transmitted original data packet and a preset virtual machine identifier and a server IP comparison table; sending the to-be-transmitted original data packet to the second physical host based on the IP address of the second physical host, wherein the to-be-transmitted original data packet is used for being transmitted to a second virtual machine corresponding to the second virtual machine identifier. Therefore, the adaptability is high, an IP address field does not need to be reserved, and use is flexible.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method, device, physical host, and medium between virtual machines. Background technique [0002] With the improvement of hardware performance, the computing power of the physical host has been greatly improved. However, due to the uneven use of resources by the operating system, the performance of the hardware is not fully utilized, resulting in a serious waste of computing resources. In this case, virtualization technology emerges as the times require. Virtualization technology enables multiple independent virtual machines to run simultaneously on the same physical host. Each virtual machine has a complete hardware device, including BIOS (Basic Input Output System, basic input output system), CPU, memory, disk, network card, etc. With virtualization technology as the core, cloud computing provides users with elastic resources, which greatly...

AI Technical Summary

Problems solved by technology

[0003] In order to realize the requirements in the above example, in the current KVM (Kernel-based Virtual Machine, open source virtual machine) platform, there are two communication methods between virtual machines on different physical hosts: one is based on serial port data communication, Serial port-based data communication needs to directly specify the physical host IP (Internet Protocol, Internet Protocol) address of the other party in the virtual machines of the communicating parties. Once the virtual machine is migrated, it is necessary to directly modify the physical host IP configured in each virtual machine communicating with it. Therefore, the cloud computing platform with large scale, strong flexibility, and dynamic automatic configuration has poor adaptability

The second is network-based data communication. Network-based data communication needs to configure a dedicated network card and reserve an IP segment for each virtual machine, which is complex to manage, requires user participation, and is not flexible to use.

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