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Method and device for verifying a virtual machine image

A virtual machine mirroring and verification method technology, which is applied in the field of virtual machine mirroring verification methods and devices, can solve the problems of waiting for a long time for mirror verification to be completed, and achieve the effect of reducing verification and inspection time and ensuring safety

Active Publication Date: 2020-05-08
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The idea of ​​partition verification is adopted to realize the verification of the virtual machine image while reading and writing, which solves the problem of waiting for the completion of the mirror verification when the virtual machine starts for a long time

Method used

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  • Method and device for verifying a virtual machine image
  • Method and device for verifying a virtual machine image

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Experimental program
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Embodiment 1

[0030] Embodiment one: if figure 1 , when the virtual machine writes data to the virtual machine image file, it calculates the check value according to the sector and records it; when writing data for each sector, it performs the same action. When the virtual machine reads data from the image file, it reads the data and sector verification data according to the sector, and then calculates the verification value of the sector data to obtain the sector data verification value 1, and the sector data verification value 1 Compare with the sector data verification value generated when writing the sector, if the verification is the same, pass the verification, pass the sector data to the virtual machine, and complete the sector data reading action; read data for each sector Repeat the same action.

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Abstract

The invention relates to the field of virtualized systems, and provides a validation method and device of a virtual machine mirror image aiming at the problems existing in the prior art. A thought of partition validation is adopted, simultaneous read-write and validation of the virtual machine mirror image are achieved, and the problem of long waiting time of mirror image validation completion when a virtual machine is started is solved. The method comprises the steps of 1, calculating a corresponding validation value of a section of written data when the virtual machine writes the data to a virtual machine mirror image file; forming a validation value list according to a section address and the corresponding validation value of the section address; 2, when the virtual machine reads the file from the section of the virtual machine mirror image file, calculating a section data validation value according to data stored in the section; 3, using the virtual machine to compare the section data validation value obtained in the step 2 with the validation value corresponding to the identical section address in the validation value list, if the two values are identical, passing the validation, transmitting the section data to the virtual machine, or, regarding the validation as failure.

Description

technical field [0001] The invention relates to the field of virtualization systems, in particular to a method and device for verifying a virtual machine image. Background technique [0002] In cloud computing and virtualization systems, in order to ensure the integrity of the virtual machine image, it is usually used to calculate the check value of the image and check the check before starting the virtual machine. This method needs to calculate the image in a concentrated time The verification value of the virtual machine is compared with the original recorded verification value, which greatly increases the waiting time from the start of the virtual machine, and the user experience is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a verification method and device for a virtual machine image in view of the problems existing in the prior art. The idea of ​​partition verification is adopted to realize the ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/455
CPCG06F9/45558G06F2009/45587G06F2009/45591
Inventor 雷波王运兵苗新亮李林啸唐中乾周艳籍帅夏凡
Owner NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP