Virtual machine backup method, backup device and host computer
A virtual machine backup and virtual machine technology, which is applied in the computer field, can solve problems such as data loss, inability to update data backup, and inability to guarantee the consistency of virtual machine backup, so as to achieve the effect of improving operating efficiency and ensuring consistency
Active Publication Date: 2019-11-12
HUAWEI TECH CO LTD
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Problems solved by technology
Therefore, the hot backup method in the prior art cannot back up the updated data in the hard disk of the virtual machine in real time, resulting in data loss during the virtual machine backup process, and cannot guarantee the consistency of the virtual machine backup.
[0006] It can be seen that there is no backup method in the prior art that can provide virtual machine functions externally during backup and ensure the consistency of virtual machine backup
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[0043] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0044] In the following detailed description, numerous specific details are set forth in order to provide a complete understanding of the present invention, but those skilled in the art will understand that the present invention may be practiced without these specific details. In other embodiments, well-known methods, procedures, components and circuits have not been described in detail so as not to unnecessarily obscure the embodiments.
[0045] When the embodimen...
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A virtual machine backup method and device. The method comprises: receiving a backup command, interrupting a service of a source virtual machine, and creating a clone virtual machine and a clone hard disk for the clone virtual machine (301); establishing a mapping relationship between the clone hard disk and a storage space of a source hard disk of the source virtual machine (302); mirroring operating data of the source virtual machine to the clone virtual machine, so as to enable the clone virtual machine to start operating according to the operating data, configuring the clone virtual machine to receive an IO request, and resuming the interrupted service of the source virtual machine (303); recording, upon detecting that a data operation executed by the clone virtual machine is a modification of data in the source hard disk, the modified data to the clone hard disk, and marking a position of the recording (304); upon detecting that execution of a service of the source virtual machine has been completed, shutting down the source virtual machine and backing up the data in the source hard disk (305); upon detecting that data backup is finished, copying, according to the mapping relationship, data at the marked position in the clone hard disk to a position in the source hard disk mapped to the marked position in the clone hard disk, and configuring the source hard disk as a hard disk for the clone virtual machine (306). The method and device can ensure consistency of backed up data without interrupting the service of a virtual machine.
Description
technical field [0001] The invention relates to the field of computers, in particular to a virtual machine backup method, a backup device and a host machine. Background technique [0002] A virtual machine (Virtual Machine, VM for short) refers to a complete system that is simulated by software and has complete hardware system functions and runs in a completely isolated environment. When the virtual machine is running, the host where the virtual machine is located, that is, the host virtualizes various hardware units for the virtual machine, such as virtual machine memory and virtual machine hard disk. The data in the memory of the virtual machine is managed by the virtual machine itself, while the data on the hard disk of the virtual machine is stored and managed by the host machine. [0003] figure 1 Shown is a schematic structural diagram of a virtual machine in the prior art, such as figure 1 As shown, all the resources used by the virtual machine 101, such as CPU, me...
Claims
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IPC IPC(8): G06F9/455G06F11/14
CPCG06F9/45558G06F11/1466G06F11/1484G06F2009/45562G06F2009/45575G06F12/00
Inventor 母子安
Owner HUAWEI TECH CO LTD