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Method of reducing physical disk I/O reading and writing

A technology of physical disks and physical nodes, applied in the field of cloud computing, can solve problems such as reduction, and achieve the effect of reducing image storage space and saving storage space

Inactive Publication Date: 2016-01-20
G CLOUD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem solved by the present invention is to provide a method for reducing the reading and writing of physical disk IO, which solves the shortcomings of traditional methods. Bottleneck offers a viable solution

Method used

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  • Method of reducing physical disk I/O reading and writing
  • Method of reducing physical disk I/O reading and writing

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Embodiment Construction

[0026] There are many implementations of the present invention, here will be based on the implementation of KVM virtualization as an example to illustrate one of the implementation methods, the flow chart is as follows figure 1 As shown, the specific implementation process is as follows

[0027] 1. Send a request to create a virtual machine;

[0028]

[0029] 2. Check whether the created virtual machine requires the existence of the operating system image on the physical node. If it exists, execute step 4 in sequence. If it does not exist, skip to step 3;

[0030]

[0031] 3. Copy the corresponding image from the mirror server to the physical node;

[0032]

[0033]

[0034] 4. Create a corresponding snapshot for the existing image;

[0035]

[0036] The underlying command #qemu-imgsnapshot-c$1$2

[0037] $1: snapshot name

[0038] $2: mirror path

[0039] 5. Then create a virtual machine based on the snapshot

[0040] Set the image snapshot path in the li...

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Abstract

The invention relates to the technical field of cloud computing, in particular to a method of reducing physical disk I / O reading and writing. The method comprises the steps of sending a virtual machine creating request; then detecting whether an operating system mirror image required by a virtual machine to be created exists or not at a physical node, and if the operating system image exists, creating a corresponding snap shot for the existing mirror image and copying the corresponding image from a mirror image server to the physical node; finally creating an virtual machine according to the snap shot. The method reduces the physical disk I / O reading and writing by the virtual machine, improves a storage space use ratio, and can be used for solving the problem of a physical disk I / O reading and writing choke point.

Description

technical field [0001] The invention relates to the technical field of cloud computing, in particular to a method for reducing IO reading and writing of physical disks. Background technique [0002] In the cloud computing environment, due to the widespread use of virtual machines, as the performance of physical machines improves, the number of virtual machines hosted on a physical machine is increasing. Therefore, the IO of the physical disk has gradually become one of the bottlenecks for carrying data. Currently, methods for reducing the IO read and write of the physical disk are generally as follows: [0003] 1. Use high-performance storage devices to improve the disk IO performance of a single physical node. [0004] 2. Limit the number of virtual machines on a single physical node. [0005] 3. Place applications with high IO requirements evenly on different physical nodes to avoid IO contention. [0006] The above method has the following disadvantages: [0007] 1. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/455G06F3/06
Inventor 刘勇彬杨松莫展鹏季统凯
Owner G CLOUD TECH
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