Continuous data protection based virtual machine data protection method

A technology of continuous data protection and data protection, applied to the redundancy in computing for data error detection, electrical digital data processing, response error generation, etc., can solve the problem of inability to achieve zero data loss, inability to achieve RPO=0 problem, to achieve the effect of improving the efficiency of backup and recovery

Inactive Publication Date: 2017-05-10
龚平
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned backup method cannot realize zero data loss after a disaster occurs, that is, the above-mentioned backup method cannot realize RPO=0, therefore, obtaining a virtual machine data protection method that realizes zero data loss and zero data loss after a disaster occurs has become a The focus of research and the goal pursued by those skilled in the art

Method used

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  • Continuous data protection based virtual machine data protection method
  • Continuous data protection based virtual machine data protection method
  • Continuous data protection based virtual machine data protection method

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Experimental program
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Effect test

Embodiment 1

[0032] Such as Figures 1 to 4 As shown, the present invention is based on the QEMU-KVM virtual machine's perception of the write operation of the virtual disk of the virtual machine. The parallel writing operation of the disk completes the real-time shunting of the writing operation of the virtual machine and the shunting is carried out synchronously to realize the data protection of the backup, and then realize the protection of the virtual machine data. The virtual machine data protection method based on continuous data protection of the present invention is backed up And the recovery effect is better and the efficiency is higher.

[0033] Generally speaking, a virtual machine uses a standard driver to call a virtual disk file to control data write operations. The present invention is different from the traditional method of controlling virtual machine data write operations. The present invention discloses a virtual machine data protection method based on continuous data p...

Embodiment 2

[0041] Such as figure 1 , 2, 3, and 5, this embodiment is basically the same as the virtual machine data protection method in the cloud platform environment of Embodiment 1, and the difference is that in this embodiment, the cloud platform is constructed based on the Ceph distributed file system. In step 1, The QEMU-KVM virtual machine maps out the mirror disk of the external storage device (External Storage) through the link related to the iSCSI block driver, and uses the mirror disk as a backup disk; in step 2, when starting the QEMU-KVM virtual machine, select the virtual The disk is used as the master disk, and the iSCSI mirror disk is mounted as the slave disk. After the virtual machine is started, the virtual disk data is synchronized to the mirror disk through the iSCSI link. Specifically, after the virtual machine is started, the continuous data protection block device driver ( QEMU-CDP-Block-Driver) will perceive the write operation of the QEMU-KVM virtual machine to...

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Abstract

The invention discloses a continuous data protection based virtual machine data protection method which includes the steps of 1, mounting a mirrored disk of a storage server to a host machine; 2, writing data into a virtual disk while synchronizing the data to the mirrored disk; 3, taking the mirrored disk as a master disk of the virtual machine when detecting that the virtual disk is damaged; 4, creating an auxiliary virtual disk, recovering data of the mirrored disk to the auxiliary virtual disk, and synchronizing the data, written into the mirrored disk in real time, of the virtual machine to the auxiliary virtual disk; 5, after finishing the recovery in the step 4, taking the auxiliary virtual disk as the master disk of the virtual machine. On the basis of the continuous data protection technology, by means of write operation awareness of the virtual disk, all changes of target data are captured or tracked continuously and the data are transmitted in real time without affecting running of the master data; thus, zero loss of the important data is realized for users.

Description

technical field [0001] The present invention relates to the technical field of virtual machines, and more specifically, the present invention relates to a virtual machine data protection method based on continuous data protection. Background technique [0002] After several years of development, cloud computing services have gradually become the basic services for informationization in various industries, and virtualization is the basic technology of cloud computing services. At present, commercial virtualization products and technologies are almost monopolized by VMWare, Citrix and Microsoft, while open source virtualization technology gradually shows the trend of KVM being the only one. With the strong support of the company, the rapid development of software, hardware, and application has formed a mature ecological chain, which has become an important choice for enterprises to carry out system virtualization and cloud platforms. [0003] At present, the protection method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F9/455
CPCG06F9/45558G06F11/1458
Inventor 黄疆
Owner 龚平
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