Method for realizing file backup for running virtual machine

Abstract

The invention discloses a method for realizing file backup for a running virtual machine, and relates to the technical field of data backup in cloud computing. The method comprises the following steps: logging into a management platform service node to configure a backup strategy, and saving in a database; reading the backup strategy from the database; checking the backup strategy; if the backup strategy is triggered, creating a snapshot volume for a logical volume where disk files needing to be backed up of the virtual machine are positioned; creating a novel logical volume on a shared storage; analyzing EXT file system data in the snapshot volume, acquiring the physical sector distribution of the files needing to be backed up on the snapshot volume, reading file data needing to be backed up from the snapshot volume according to the physical sector distribution, and writing into the new logical volume; after writing, deleting the created snapshot volume. By adopting the method, file backup operation of the running virtual machine can be realized in a cloud data environment, and backup operation can be finished when the files are locked; the method is easy and convenient to operate and manage, and has high efficiency.

Description

technical field [0001] The invention relates to the technical field of data backup in cloud computing, in particular to a method for realizing file backup of a running virtual machine. Background technique [0002] Cloud computing has become one of the current IT development trends. More and more services on physical servers are migrated to cloud data centers, including some key services of users. It has become one of the problems that must be solved to use virtual machines instead of physical servers in cloud data centers to carry user services, ensure the data reliability of key services, and realize the backup of important file data in virtual machines. [0003] Traditional virtual machine backup usually adopts the following methods: a, install a backup program in the virtual machine that needs to back up file data; Transfer Protocol, file transfer protocol) server or other remote servers accessed through the network; c, complete the backup work according to the configur...

AI Technical Summary

Problems solved by technology

[0004] (1) The cloud data center manages a large number of virtual machines. In order to achieve backup, it is necessary to install a backup program in all virtual machines. The workload of installation and upgrade is large, and the efficiency is very low.

[0005] (2) The traditional backup method uses the designated external server as the backup target server, and generally cannot directly use the shared storage device managed by the cloud data center, which makes the management operations of the administrator complex and cumbersome; in addition, due to security considerations, the virtual machine The network may be isolated, and the virtual machine may not be able to access the backup target server normally (because the target server may be a remote server that needs to be accessed through the network), resulting in the failure of the backup function

[0006] (3) The traditional backup technology needs to read the file data of the virtual machine in the virtual machine. When the file data is locked by the business itself, the backup will fail

[0007] Therefore, traditional backup techniques are not suitable for cloud computing

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