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Data backup method for virtual machines

A data backup and virtual machine technology, applied in the computer field, can solve problems such as shortening the backup time of virtual machines and affecting virtual machines, and achieve the effects of shortening backup time, improving consistency, and reducing impact

Active Publication Date: 2014-03-26
DAWNING CLOUD COMPUTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem in the related art that a large amount of data backup operations will affect the business of the virtual machine itself, the present invention proposes a data backup method for the virtual machine, which can shorten the backup time of the virtual machine, and continuously run the virtual machine during the backup process, reducing the The impact on physical server performance during virtual machine backup improves the consistency of virtual machine memory data and disk cache data

Method used

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Embodiment Construction

[0029] 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 only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0030] According to an embodiment of the present invention, a data backup method for a virtual machine is provided.

[0031] Such as figure 1 As shown, the data backup method according to the embodiment of the present invention includes:

[0032] Step S101, taking a snapshot of data in multiple disks in one or more virtual machines to generate a snapshot file, and storing the generated snapshot file in a snapshot queue;

[0033] Step S103, during the snapshot process, supplementary snapshot...

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Abstract

The invention discloses a data backup method for virtual machines. The method comprises the following steps of snapshooting data in a plurality of magnetic disks in one or more virtual machines to generate a snapshot file, and storing the generated snapshot file in a snapshot queue; complementarily snapshooting newly added data in each magnetic disk in a snapshooting process, and storing a generated complementary snapshot file in the snapshot queue until all the data in the magnetic disks is snapshot; when the snapshot file and the complementary snapshot file in the snapshot queue reach a threshold value, backing up the snapshot file and the complementary snapshot file in a target magnetic disk. According to the data backup method, the data is snapshot and complementarily snapshot, and the snapshot file and the complementary snapshot file are transferred when reaching the threshold value, so that the backup time of the virtual machines is shortened; moreover, the virtual machines continuously run in backup processes, so that influence on a physical server in the backup processes of the virtual machines is reduced, and the consistency of memory data of the virtual machines and the cache data of the magnetic disks is improved.

Description

technical field [0001] The invention relates to the field of computers, and mainly relates to a data backup method for a virtual machine. Background technique [0002] According to the existing virtual machine backup technology, whether it is a small server or a server that stores up to several TB of data, the backup can be completed within a few minutes. However, when the data size reaches terabytes or more, file copying will take up a lot of time, a lot of system disk I / O, a lot of network bandwidth, and a lot of memory, making the CPU utilization very low, thus affecting the normal business in the virtual machine system operating performance. Obviously, this method cannot meet the virtual machine backup requirements of terabytes of data. [0003] Moreover, according to the existing virtual machine backup technology, the backup of the virtual machine must first shut down the virtual machine or suspend the virtual machine before performing the backup operation, which will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F3/06
Inventor 李立王军林唐明徐博成书晟
Owner DAWNING CLOUD COMPUTING TECH CO LTD
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