Method and device for reading virtual machine disk copy process based on fixed buffer

A technology of virtual machine disk and replication process, applied in program control device, input/output process of data processing, program control design, etc., can solve problems affecting virtual machine service quality, data inconsistency, etc., to maintain data consistency Effect

Inactive Publication Date: 2018-11-20
GUANGDONG EFLYCLOUD COMPUTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the two methods will affect the service quality of the virtual machine to varying degrees, because it is necessary to avoid read operations during the replication period, resulting in inconsistency of the read data

Method used

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  • Method and device for reading virtual machine disk copy process based on fixed buffer
  • Method and device for reading virtual machine disk copy process based on fixed buffer
  • Method and device for reading virtual machine disk copy process based on fixed buffer

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Embodiment Construction

[0031] The concept, specific structure and technical effects of the present disclosure will be clearly and completely described below in conjunction with the embodiments and drawings, so as to fully understand the purpose, scheme and effect of the present disclosure. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The same reference numbers are used throughout the drawings to indicate the same or similar parts.

[0032] Such as figure 1 Shown is the logic diagram of the virtual machine disk copy process based on fixed buffer in the present disclosure, figure 2 Shown is a flow chart of a method for reading a virtual machine disk copy process based on a fixed buffer according to the present disclosure. The following is combined with figure 1 , figure 2 A method for reading a virtual machine disk copy process based on a fixed buffer according to an embodiment ...

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Abstract

The invention discloses a method and device for reading a virtual machine disk copy process based on a fixed buffer. When a disk that may be written at any time during running is copied, a writing buffer area is introduced, at the same time, when the disk is copied, a reading operation is sent, according to a condition whether content to be read is in the writing buffer area, the content is updated and returned if so, and original data content is directly read and returned if not. According to the method and the device, the disk can be read when a used disk is copied, a read operation in databackup or other virtual machine disk copying process can maintain data consistency well, and the quality of service of a virtual machine is not affected by frequent reading operations.

Description

technical field [0001] The present disclosure relates to the field of virtual machine disk operation, in particular to a method and device for reading a virtual machine disk copy process based on a fixed buffer. Background technique [0002] The virtual machine is built on the virtualization platform, including the disk part. In daily use or operation and maintenance, it is necessary to back up the data of a running virtual machine disk, because the virtual machine is running and it is possible to backup the disk all the time. Read, if you want to back up the copied data on the disk, you will face the problem of data read inconsistency caused by the writing of data on the disk during the copying process. At present, if you want to copy a running virtual machine disk, one method is to shut down the virtual machine to copy, and then turn it on after the copy is completed. During the copy, it cannot be read after shutting down; Read operation, wait for the copy to complete bef...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F9/455G06F3/06
CPCG06F3/064G06F3/065G06F3/0656G06F9/45533G06F11/1448
Inventor 麦剑霍键聪史伟叶梅霞
Owner GUANGDONG EFLYCLOUD COMPUTING CO LTD
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