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Disk backup method and apparatus for virtual machine

A technology of virtual machine disk and virtual machine, applied in the field of data processing, can solve problems such as high system pressure and poor backup performance, and achieve the effect of reducing system pressure and improving backup performance

Inactive Publication Date: 2018-01-05
NEW H3C CLOUD TECH CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a virtual machine disk backup method and device to solve the problem of poor backup performance and high system pressure in the existing virtual machine disk backup scheme

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  • Disk backup method and apparatus for virtual machine
  • Disk backup method and apparatus for virtual machine
  • Disk backup method and apparatus for virtual machine

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0023] See figure 1 , is a schematic flowchart of a virtual machine disk backup method provided in an embodiment of the present invention, wherein the virtual machine disk backup method can be applied to a host on which a virtual machine is deployed (for the convenience of description, it will be directly described as a host in the following), such as figure 1 As shown, the virtual machine disk backup method may include the following steps:

[0024] Step 101, when it is necessary to perform a specified type of disk backup on t...

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Abstract

The invention provides a disk backup method and apparatus for a virtual machine. The method comprises the steps of when a specified type of disk backup needs to be performed on a target virtual machine, creating an internal snapshot corresponding to the target virtual machine and analyzing L1 and L2 tables of the internal snapshot, wherein the specified type of disk backup includes incremental backup or differential backup; comparing the L1 and L2 tables of the internal snapshot with L1 and L2 tables of the internal snapshot in last disk backup, so as to determine a block number of a disk block in which block modification is occurred; and according to the block number of the disk block in which the block modification is occurred, generating a backup file. By applying the disk backup methodand apparatus provided by the embodiment of the invention, the backup performance can be improved and the system pressure is reduced.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a virtual machine disk backup method and device. Background technique [0002] Currently, virtual machine disk backup mainly includes three backup methods: full backup, incremental backup, and differential backup. in: [0003] Full backup refers to a full backup of the entire disk; [0004] Incremental backup refers to backing up the data added or / and modified after the last backup; [0005] Differential backup refers to backing up the added or / and modified data after the last full backup. [0006] However, it has been realized that in the existing incremental backup and differential backup schemes, for the virtual machine disks to be backed up, it is necessary to traverse all disk blocks, calculate the check code of the data in each disk block, and compare the two disk image files. The check code of the data in each disk block determines the difference, and then the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F9/455
Inventor 钟晋明
Owner NEW H3C CLOUD TECH CO LTD
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