Storage device access method, device and system

A storage device and access method technology, applied in the computer field, can solve problems such as redundancy of storage device access operation mechanism

Pending Publication Date: 2020-10-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the access of the virtual machine to the peripheral needs to go through the conversion operation of multiple software layers, and the access operation of the storage device has mechanism redundancy.

Method used

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  • Storage device access method, device and system
  • Storage device access method, device and system
  • Storage device access method, device and system

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Embodiment Construction

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. 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.

[0079] figure 1 is a schematic structural diagram of a virtualization system 100, such as figure 1 As shown, the system 100 includes: physical hardware 106, a virtual machine monitor 104 (Virtual Machine Monitor, VMM) and N virtual machines 102 running on the physical hardware, where N is a positive integer greater than 0.

[0080] Virtual Machine Monitor (Virtual Machine Monitor) is a software description layer between the virtual machine operating s...

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Abstract

The embodiment of the invention provides a storage device access method, device and system. The method, device and system are used for access operation of a virtual machine to a storage device. The method comprises the following steps: the I / O adapter acquires an access request from the virtual machine; wherein the access request carries virtual address information of a to-be-accessed storage area; an access instruction is generated according to the access request, wherein the access instruction carries the virtual address information and an identifier of a virtual channel of the virtual machine, the virtual channels are in one-to-one correspondence with the virtual machines and are used for connecting the corresponding virtual machines with a storage device target device, and the storagedevice target device is used for managing access operation on the storage device and sending the access instruction to the storage device target device. Therefore, direct access of the virtual machineto the storage device is achieved, the access method of the storage device is simplified, the I / O access process is shortened, and consumption of memory resources and computing resources by a software layer is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of computers, and in particular, to a storage device access method, device and system. Background technique [0002] Virtualization technology originates from the demand for time-sharing systems, and its main goal is to run multiple operating systems on one host computer in order to fully utilize the expensive computing resources on the mainframe. With the performance improvement of x86 processors and the popularization of applications, the development of virtualization technology has also begun to enter the field of x86 architecture. Especially in the late 1990s, virtualization software vendors opened up the way for the application of virtualization technology on the x86 platform, providing virtual machine monitor (Virtual Machine Monitor, referred to as VMM) as the center, for personal computer (Personal Computer, PC) server platform virtualization software solution. A virtual machine (Vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/1009G06F9/455G06F12/109
CPCG06F9/45558G06F2009/45579G06F12/1009G06F12/109G06F2009/45583G06F2212/657
Inventor 李浪波
Owner HUAWEI TECH CO LTD
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