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Data backup method and system based on logical volume management simple volume

A technology for logical volume management and data backup, which is applied to data error detection, electrical digital data processing, and response error generation in the direction of redundancy in computing, and can solve problems such as wasting space

Active Publication Date: 2016-12-14
BEIJING FORTUNET INFORMATION TECH
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Problems solved by technology

[0003] In view of this, it is necessary to provide a data backup method and system based on logical volume management and thin volume to solve the problem of wasting space in the traditional full backup of the cloud hard disk. Only do incremental backups during backup, which can effectively reduce the waste of space caused by doing full backups every time

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  • Data backup method and system based on logical volume management simple volume
  • Data backup method and system based on logical volume management simple volume
  • Data backup method and system based on logical volume management simple volume

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the data backup method and system of the present invention based on logical volume management thin volume will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] In one embodiment, such as figure 1 As shown, a data backup method for managing thin volumes based on logical volumes is provided, and the method includes the following steps:

[0051] S100, acquiring a complete data comparison table or an incremental data comparison table of the logical volume management thin volume.

[0052] S200. Create a backup image file, and mount the backup image file in the network block device.

[0053] S300. Read the backup data from the logical volume management thin volume accor...

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Abstract

The invention provides a backup method and system based on a logical volume management simple volume. The method comprises the following steps: acquiring a complete data comparison table or an incremental data comparison table of the logical volume management simple volume; creating a backup mirror document, and mounting the backup mirror document in network block equipment; reading backup data from the logical volume management simple volume according to the complete data comparison table or the incremental data comparison table; performing write operation on the network block equipment to write backup data into the backup mirror document in the network block equipment. The simple logical volume is backed up completely according to the complete data comparison table when complete data backup is needed, usually, complete backup only needs to be performed once, and incremental backup is performed on the simple logical volume according to the incremental data comparison table when complete backup is not needed, so that the space can be saved effectively, and the space of the backup mirror document is relatively small.

Description

technical field [0001] The invention relates to the field of computer equipment, in particular to a data backup method and system for managing thin volumes based on logical volumes. Background technique [0002] When LVM Thin Volume (LVM Thin Volume) based on LVM (Logical Volume Manager, Logical Volume Management) is used for regular backup of cloud hard disk in the environment of openstack (an open source cloud computing management platform project), it is usually regular It is a waste of space to do a full backup every time, and the backup output in RAW format does not have the function of snapshot (snapshot), which is not conducive to the virtual machine user (VM User) to open this backup for viewing system needs, because Turning on the virtual machine for the output backup file will cause the data in the backup file to be modified, which does not meet the backup purpose of data consistency. Contents of the invention [0003] In view of this, it is necessary to provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1448
Inventor 陈杰沈伟亮
Owner BEIJING FORTUNET INFORMATION TECH
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