CN105740003A - Method and device for recovering virtual machine, as well as method and device for upgrading virtual machine - Google Patents

Abstract

The present invention provides a method and device for restoring and upgrading a virtual machine, wherein the method for restoring a virtual machine includes: deleting the selected virtual machine, retaining the disk information and registry information of the virtual machine; creating a VHD virtual machine through a virtual machine template ; and import the disk information and registry information of the virtual machine into the VHD virtual machine. The method of upgrading the virtual machine includes: converting the virtual machine template into a new virtual machine, installing a new application or patch in the new virtual machine; converting the new virtual machine after installing the new application or patch into a new virtual machine template; converting the new virtual machine The template's child nodes and parent nodes are integrated to obtain a new parent node to replace the original parent node of the new virtual machine template. The invention provides an optimization method for restoring and upgrading a virtual machine, so that the virtual machine can be quickly and intelligently restored when it crashes, and the virtual machine can be conveniently upgraded in batches by using the optimization method for upgrading the virtual machine.

Description

A method and device for restoring and upgrading a virtual machine

technical field

The invention relates to the field of cloud desktops, in particular to a method and device for restoring and upgrading a virtual machine.

Background technique

Cloud desktop is based on the virtualization technology of computer hardware resources, so that it can be virtualized into multiple virtual computers, and the desktop operating system without any modification can be directly run on the virtual computers. At the same time, it also provides an operating system that supports quasi-virtualization technology, and applications can run directly on the desktop operating system. The cloud desktop system includes a management center, a host server, a storage module and a client. The management center is responsible for the creation, maintenance and allocation of resources; the host server provides network and block device I/O support; the storage module is responsible for the storage and access of user data; the client is responsible for the connection and display of cloud resources.

Virtual computers are generally divided into desktop virtual machines and ordinary virtual machines. Desktop virtual machines are generally provided for direct use by users. After users log in to the virtual machine, they can directly use the virtual machine as an ordinary PC. This type of virtual machine mainly considers the use support of various applications. Common desktop operating systems include xp , win7, win8, etc. Ordinary virtual machines are generally used as servers, without being assigned to users for direct use. Commonly used server operating systems are supported by windows2003, windows2008, windows2010 and various linux systems.

Common login authentication methods for virtual desktops include local authentication and AD (Active Directory) domain controller authentication. The local authentication method stores the user name and password of the user in the local database. The AD domain controller stores information on a dedicated AD server for secure centralized management and unified security policies. The role of the AD domain controller is quite a gatekeeper, which contains a database composed of account passwords, management policies and other information in this domain. When a computer logs into a domain, the domain controller must first identify whether the computer belongs to the domain, and whether the login account and password used by the user are correct. If it is correct, the computer is allowed to log in to this domain and use any resources that it has permission to access in this domain, such as file servers and print servers (that is to say, the domain controller only plays a verification role, and access to other resources does not need to follow the domain controller. If it is not correct, the computer will not be allowed to log in, and the computer will not be able to access any resources in the domain, which protects the enterprise network resources to a certain extent.

The usual virtual machine recovery strategy is to make a backup of the virtual machine. When the virtual machine is abnormal, use the backup to restore. A major drawback of this recovery is that it cannot restore the virtual machine operation after backup.

In the prior art, software is upgraded in batches through domain controller distribution. The domain controller can only distribute the software to each virtual machine in batches, and notify the user to install it by himself or the administrator to enter the desktop virtual machine to install it one by one.

Contents of the invention

The object of the present invention is to provide a method and device for recovering and upgrading a virtual machine, so that the virtual machine can be quickly, intelligently and completely restored, and at the same time, the convenient batch upgrade of the virtual machine in the online state can be completed.

In order to achieve the above object, the present invention provides a method for restoring a virtual machine, including:

Delete the selected virtual machine, and retain the disk information and registry information of the virtual machine, wherein the disk information includes at least: system disk information;

Create a VHD virtual machine from a virtual machine template; and

Import the disk information and registry information of the virtual machine into the VHD virtual machine.

Among them, delete the selected virtual machine, and keep the disk information and registry information of the virtual machine, specifically:

In the disk node tree structure, the first child node of the selected virtual machine is deleted, the registry information of the virtual machine is stored in the disk information of the virtual machine, and the disk information of the virtual machine is retained.

Among them, create a VHD virtual machine through a virtual machine template, specifically:

Select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine in the disk node tree structure, and create the third child node of the VHD virtual machine through the second child node of the virtual machine template , the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine.

Wherein, the method also includes:

A null judgment operation is performed on the second child node of the virtual machine template, and when the second child node of the virtual machine template is an empty node, the second child node of the virtual machine template is deleted.

Wherein, the disk information and registry information of the virtual machine are imported into the VHD virtual machine, specifically including:

Import the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine;

Import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine.

The embodiment of the present invention also provides a method for upgrading a virtual machine, including:

Convert a virtual machine template into a new virtual machine, and install new applications or patches in the new virtual machine;

Convert a new virtual machine after installing a new application or patch into a new virtual machine template;

The child node of the new virtual machine template and the parent node of the new virtual machine template are integrated to obtain a new parent node to replace the original parent node of the new virtual machine template.

Among them, installing a new application or patch in the new virtual machine is specifically:

Select a sub-node of the new virtual machine in the disk node tree structure, and install a new application or patch on the sub-node of the new virtual machine.

Wherein, the child node of the new virtual machine template and the parent node of the new virtual machine template are integrated to obtain a new parent node to replace the original parent node of the new virtual machine template, specifically including:

In the disk node tree structure, select the child node of the new virtual machine template and the parent node of the new virtual machine template as the new parent node of the new virtual machine template to replace the original parent node of the new virtual machine template;

The child node of the new virtual machine template is integrated with the parent node of the new virtual machine template to obtain a new parent node of the new virtual machine template.

The embodiment of the present invention also provides a device for restoring a virtual machine, including:

A processing module, configured to delete the selected virtual machine, and retain disk information and registry information of the virtual machine, wherein the disk information at least includes: system disk information;

Create a module for creating a VHD virtual machine through a virtual machine template;

The import module is used to import the disk information and registry information of the virtual machine into the VHD virtual machine.

Wherein, the processing module is further used for:

In the disk node tree structure, the first child node of the selected virtual machine is deleted, the registry information of the virtual machine is stored in the disk information of the virtual machine, and the disk information of the virtual machine is retained.

Among them, the creation module is further used to:

Select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine in the disk node tree structure, and create the third child node of the VHD virtual machine through the second child node of the virtual machine template , the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine.

Among them, the device also includes:

The judging module is configured to perform an empty judging operation on the second child node of the virtual machine template, and delete the second child node of the virtual machine template when the second child node of the virtual machine template is an empty node.

Among them, the imported modules include:

The first import unit is used to import the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine;

The second importing unit is configured to import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine.

The embodiment of the present invention also provides a device for upgrading a virtual machine, including:

A first conversion module, configured to convert the virtual machine template into a new virtual machine, and install a new application or patch in the new virtual machine;

The second conversion module is used to convert the new virtual machine installed with the new application or the patch into a new virtual machine template;

The integration module is configured to integrate the child node of the new virtual machine template and the parent node of the new virtual machine template to obtain a new parent node to replace the original parent node of the new virtual machine template.

Wherein, the first conversion module is further used for:

Select a sub-node of the new virtual machine in the disk node tree structure, and install a new application or patch on the sub-node of the new virtual machine.

Among them, the integration module specifically includes:

The replacement unit is used to select the child node of the new virtual machine template and the parent node of the new virtual machine template in the disk node tree structure as the new parent node of the new virtual machine template to replace the original parent node of the new virtual machine template;

The integration unit is configured to integrate the child node of the new virtual machine template with the parent node of the new virtual machine template to obtain a new parent node of the new virtual machine template.

The beneficial effects of the invention are: by converting the system disk of the virtual machine into a data disk, modifying the registry information at the same time, restoring the application program and data of the virtual machine, and recovering the virtual machine quickly, intelligently and completely. By replacing the original parent node with the parent node installed with the new application or patch, all virtual machines can use the new application or patch, and conveniently upgrade the virtual machines in batches.

Description of drawings

FIG. 1 shows a schematic diagram of creating a virtual machine 1 by using a virtual machine template;

FIG. 2 shows a schematic diagram of creating a virtual machine 2 using a virtual machine template;

Figure 3 shows a schematic diagram of deleting an empty parent node;

Fig. 4 shows the disk node tree diagram of virtual machine template creation virtual machine;

FIG. 5 shows a flow chart of method steps for restoring a virtual machine according to an embodiment of the present invention;

FIG. 6 shows a tree change diagram of a disk node in which virtual machine 1 is deleted in the method for restoring a virtual machine according to an embodiment of the present invention;

FIG. 7 shows a tree change diagram of disk nodes after virtual machine 3 is created in the method for restoring a virtual machine according to an embodiment of the present invention;

FIG. 8 shows a tree change diagram of a disk node when a node is judged to be empty in the method for restoring a virtual machine according to an embodiment of the present invention;

Fig. 9 shows the flow chart of the steps of importing the disk information and registry information of the virtual machine into the VHD virtual machine in the method for restoring the virtual machine according to the embodiment of the present invention;

FIG. 10 shows a tree change diagram of a disk node after importing a data disk in the method for restoring a virtual machine according to an embodiment of the present invention;

FIG. 11 shows a flow chart of method steps for upgrading a virtual machine according to an embodiment of the present invention;

FIG. 12 shows a tree change diagram of disk nodes converted from a virtual machine template to a virtual machine 4 in the method for upgrading a virtual machine according to an embodiment of the present invention;

Fig. 13 shows the disk node tree change diagram of the virtual machine 4 converted into a new virtual machine template in the method for upgrading the virtual machine in the embodiment of the present invention;

FIG. 14 shows a flow chart of steps for replacing a parent node in a method for upgrading a virtual machine according to an embodiment of the present invention;

FIG. 15 shows a tree change diagram of a disk node after replacing a parent node in a method for upgrading a virtual machine according to an embodiment of the present invention;

FIG. 16 shows a tree change graph of integrating parent node disk nodes in the method for upgrading a virtual machine according to an embodiment of the present invention;

FIG. 17 shows a block diagram of an apparatus for restoring a virtual machine according to an embodiment of the present invention;

Fig. 18 shows a block diagram of importing modules in the device for restoring a virtual machine according to an embodiment of the present invention;

FIG. 19 shows a block diagram of a device for upgrading a virtual machine according to an embodiment of the present invention;

FIG. 20 shows a block diagram of an integrated module in a device for upgrading a virtual machine according to an embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

In the prior art, the detailed process of creating a virtual machine using a virtual machine template is as follows:

As shown in Figure 1, the virtual machine template is notified to create virtual machine 1, and two child nodes B and M are pulled down from the disk node A of the virtual machine template to become the child nodes of virtual machine 1 and the virtual machine template respectively. At this time, node A becomes the common parent node of the virtual machine template and virtual machine 1. Since B and M are newly created nodes (no operations are performed on the nodes), the actual space occupied by these two disk nodes is very small or even has no data. Therefore, the creation process is very fast (about 10S).

As shown in Figure 2, the virtual machine template is notified to create virtual machine 2, and two child nodes C and D are pulled down from the child node M of the virtual machine template, which become the child nodes of virtual machine 2 and the virtual machine template respectively. Similarly, C and D are newly created nodes, and the actual space occupied by these two disk nodes is very small or even has no data. Therefore, the process of creating virtual machine 2 is also very fast (about 10S).

As shown in FIG. 3 , the parent node of the virtual machine and the virtual machine template is judged to be empty, and if it is empty, the empty parent node is deleted. The parent node M of VM 2 and the VM template is an empty node. Delete this node. Finally, a virtual machine template as shown in FIG. 4 is formed to create a disk node tree diagram of the virtual machine.

The present invention provides a method for restoring a virtual machine based on the above-mentioned prior art, as shown in Figure 5, including:

Step S100, delete the selected virtual machine, and retain the disk information and registry information of the virtual machine, wherein the disk information at least includes: system disk information;

Step S200, creating a VHD virtual machine through a virtual machine template;

Step S300, importing the disk information and registry information of the virtual machine into the VHD virtual machine.

Specifically, retain the disk information and registry information of the selected virtual machine, create a VHD virtual machine according to the virtual machine template, import the saved disk information and registry information of the virtual machine into the newly created VHD virtual machine, and restore the virtual machine Quickly, intelligently, and completely restore virtual machines without losing applications and data.

In the foregoing embodiments of the present invention, the selected virtual machine is deleted, and the disk information and registry information of the virtual machine are retained, specifically:

In the disk node tree structure, the first child node of the selected virtual machine is deleted, the registry information of the virtual machine is stored in the disk information of the virtual machine, and the disk information of the virtual machine is retained.

As shown in Figure 6, the child node B of the selected virtual machine 1 is deleted, information on all disks (including system disk C) of the virtual machine 1 is reserved, and the registry information of the virtual machine 1 is automatically reserved, and the registry information is stored in the virtual machine. In the disk information of the virtual machine, integrate the disk node A+B of the virtual machine 1 into an independent disk a.

In the foregoing embodiments of the present invention, a VHD virtual machine is created through a virtual machine template, specifically:

Select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine in the disk node tree structure, and create the third child node of the VHD virtual machine through the second child node of the virtual machine template , the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine.

As shown in Figure 7, use the virtual machine template to quickly create a VHD virtual machine, that is, virtual machine 3 (about 10S). The creation process: pull down two subnodes E and F from the subnode D of the virtual machine template to become virtual machine 3 and F respectively. Child node of the virtual machine template. The change diagram of the disk node tree after virtual machine 3 is created: two child nodes E and F are pulled down from child node D of the virtual machine template to form virtual machine 3, so the node of virtual machine 3 is A+D+E, The nodes of the virtual machine template are A+D+F.

In the above-mentioned embodiment of the present invention, the method also includes:

A null judgment operation is performed on the second child node of the virtual machine template, and when the second child node of the virtual machine template is an empty node, the second child node of the virtual machine template is deleted.

In order to prevent the uncontrolled increase of virtual machine nodes, the child node will determine whether the parent node is empty, and if it is empty, delete the empty node. As shown in Figure 8, the D node is an empty node (there is no content in it), and it will be deleted after being judged to be empty.

In the foregoing embodiments of the present invention, the disk information and registry information of the virtual machine are imported into the VHD virtual machine, as shown in FIG. 9 , specifically including:

Step S301, importing the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine;

Step S302, import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine.

As shown in FIG. 10 , the disk information reserved by virtual machine 1 (that is, independent disk a) is mounted on the new virtual machine (virtual machine 3) as a data disk of the new virtual machine. The system disk C of the virtual machine 1 is used as the data disk E of the new virtual machine, and disk C in the registry information of the saved virtual machine 1 is modified to disk E. Import the registry information of saved virtual machine 1 to the new virtual machine. In this way, various applications and data of the virtual machine 1 can be recovered as much as possible without reinstallation.

The embodiment of the present invention also provides a method for upgrading a virtual machine, as shown in FIG. 11 , including:

Step S400, converting the virtual machine template into a new virtual machine, and installing a new application or patch in the new virtual machine;

Step S500, converting the new virtual machine installed with the new application or patch into a new virtual machine template;

Step S600, integrate the child node of the new virtual machine template and the parent node of the new virtual machine template to obtain a new parent node to replace the original parent node of the new virtual machine template.

Specifically, as shown in Figures 12 and 13, by installing a new application or patch in the new virtual machine, the new virtual machine after installing the new application or patch is converted into a new virtual machine template. At this time, the new virtual machine template contains For new applications or patches, new application installations and patch upgrades inside the virtual machine can be implemented by replacing the parent node. Batch and automatic installation or upgrade can be achieved, and the efficiency has been significantly improved.

In the above embodiments of the present invention, in step S400, a new application or patch is installed in the new virtual machine, specifically:

Select a sub-node of the new virtual machine in the disk node tree structure, and install a new application or patch on the sub-node of the new virtual machine.

As shown in FIG. 12 , a new application or patch is installed in the virtual machine 4, and the installation of the application or patch is performed on the child node D of the virtual machine 4 without affecting the online use of other virtual machines.

In the above-mentioned embodiment of the present invention, as shown in FIG. 14, step S600 specifically includes:

Step S601, selecting the child node of the new virtual machine template and the parent node of the new virtual machine template in the disk node tree structure as the new parent node of the new virtual machine template to replace the original parent node of the new virtual machine template;

Step S602, integrating the child nodes of the new virtual machine template and the parent nodes of the new virtual machine template to obtain a new parent node of the new virtual machine template.

As shown in FIG. 15 , the parent node and child nodes of the new virtual machine template are integrated to replace the original parent node. The parent node of the replaced virtual machine 1, virtual machine 2, and new virtual machine template is A+D, and the difference child nodes of virtual machine 1, virtual machine 2, and the new virtual machine template are B, C, and E, respectively. Integrate the parent node A+D into a node F. Refer to Figure 16 to integrate the parent node disk node tree change diagram: the parent node after the integration of virtual machine 1, virtual machine 2 and the new virtual machine template is F, virtual machine 1, The difference child nodes of virtual machine 2 and the new virtual machine template are B, C, and E respectively.

The embodiment of the present invention also provides an apparatus for restoring a virtual machine, as shown in FIG. 17 , including:

The processing module 10 is configured to delete the selected virtual machine, and retain the disk information and registry information of the virtual machine, wherein the disk information at least includes: system disk information;

Creating module 20, for creating a VHD virtual machine through a virtual machine template;

The import module 30 is configured to import the disk information and registry information of the virtual machine into the VHD virtual machine.

In the above embodiments of the present invention, the processing module 10 is further used for:

In the disk node tree structure, the first child node of the selected virtual machine is deleted, the registry information of the virtual machine is stored in the disk information of the virtual machine, and the disk information of the virtual machine is retained.

In the above embodiments of the present invention, the creation module 20 is further used for:

Select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine in the disk node tree structure, and create the third child node of the VHD virtual machine through the second child node of the virtual machine template , the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine.

In the above-mentioned embodiment of the present invention, the device also includes:

The judging module 40 is configured to perform an empty judging operation on the second child node of the virtual machine template, and delete the second child node of the virtual machine template when the second child node of the virtual machine template is an empty node.

In the above-mentioned embodiment of the present invention, as shown in FIG. 18, the import module 30 includes:

The first import unit 31 is used to import the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine;

The second importing unit 32 is configured to import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine.

The embodiment of the present invention also provides an apparatus for upgrading a virtual machine, as shown in FIG. 19 , including:

The first conversion module 50 is configured to convert the virtual machine template into a new virtual machine, and install a new application or patch in the new virtual machine;

The second converting module 60 is configured to convert the new virtual machine installed with the new application or the patch into a new virtual machine template;

The integration module 70 is configured to integrate the child node of the new virtual machine template and the parent node of the new virtual machine template to obtain a new parent node to replace the original parent node of the new virtual machine template.

In the above embodiments of the present invention, the first conversion module 50 is further used for:

Select a sub-node of the new virtual machine in the disk node tree structure, and install a new application or patch on the sub-node of the new virtual machine.

In the above embodiments of the present invention, as shown in FIG. 20 , the integration module 70 specifically includes:

The replacement unit 71 is used to select the child node of the new virtual machine template and the parent node of the new virtual machine template in the disk node tree structure as the new parent node of the new virtual machine template to replace the original parent node of the new virtual machine template;

The integration unit 72 is configured to integrate the child nodes of the new virtual machine template with the parent nodes of the new virtual machine template to obtain a new parent node of the new virtual machine template.

In the method for restoring and upgrading a virtual machine in the embodiment of the present invention, the virtual machine system disk is converted into a data disk, and the registry information is modified at the same time, and the application program and data of the virtual machine are restored, so that the virtual machine can be quickly, intelligently and completely restored. By replacing the original parent node with the parent node installed with the new application or patch, all virtual machines can use the new application or patch, and conveniently upgrade the virtual machines in batches.

It should be noted that the device for recovering and upgrading a virtual machine provided by the present invention is a device for applying the above-mentioned method, and all embodiments of the above-mentioned method are applicable to the device, and can achieve the same or similar beneficial effects.

The above is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principles of the present invention, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (16)

1. A method for restoring a virtual machine, characterized in that the method comprises: deleting the selected virtual machine, and retaining the disk information and registry information of the virtual machine, wherein the disk information at least includes: system disk information; Create a VHD virtual machine from a virtual machine template; and Import the disk information and registry information of the virtual machine into the VHD virtual machine. 2. The method according to claim 1, wherein the deleting the selected virtual machine and retaining the disk information and registry information of the virtual machine is specifically: Deleting the first child node of the selected virtual machine in the disk node tree structure, storing the registry information of the virtual machine in the disk information of the virtual machine, and retaining the disk information of the virtual machine. 3. The method according to claim 2, wherein said creating a VHD virtual machine through a virtual machine template is specifically: In the disk node tree structure, select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine, and create a VHD virtual disk through the second child node of the virtual machine template. The third child node of the machine, the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine. 4. The method of claim 3, further comprising: An empty judgment operation is performed on the second child node of the virtual machine template, and when the second child node of the virtual machine template is an empty node, the second child node of the virtual machine template is deleted. 5. The method according to claim 1, wherein the disk information and registry information of the virtual machine are imported into the VHD virtual machine, specifically comprising: Importing the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine; Import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine. 6. A method for upgrading a virtual machine, characterized in that the method comprises: converting the virtual machine template into a new virtual machine, and installing a new application or patch in said new virtual machine; converting said new virtual machine after installing a new application or patch into a new virtual machine template; The child node of the new virtual machine template and the parent node of the new virtual machine template are integrated to obtain a new parent node to replace the original parent node of the new virtual machine template. 7. The method according to claim 6, wherein the installing a new application or patch in the new virtual machine is specifically: Selecting a child node of the new virtual machine in the disk node tree structure, and installing a new application or patch on the child node of the new virtual machine. 8. The method according to claim 7, wherein the child node of the new virtual machine template is integrated with the parent node of the new virtual machine template to obtain a new parent node to replace the new The original parent node of the virtual machine template, including: In the disk node tree structure, select the child node of the new virtual machine template and the parent node of the new virtual machine template as the new parent node of the new virtual machine template to replace the new virtual machine template original parent node; The child node of the new virtual machine template is integrated with the parent node of the new virtual machine template to obtain a new parent node of the new virtual machine template. 9. A device for restoring a virtual machine, characterized in that the device comprises: A processing module, configured to delete the selected virtual machine, and retain disk information and registry information of the virtual machine, wherein the disk information at least includes: system disk information; Create a module for creating a VHD virtual machine through a virtual machine template; An import module, configured to import the disk information and registry information of the virtual machine into the VHD virtual machine. 10. The device according to claim 9, wherein the processing module is further used for: Deleting the first child node of the selected virtual machine in the disk node tree structure, storing the registry information of the virtual machine in the disk information of the virtual machine, and retaining the disk information of the virtual machine. 11. The device according to claim 10, wherein the creation module is further used for: In the disk node tree structure, select the second child node of the virtual machine template that has the same parent node as the first child node of the virtual machine, and create a VHD virtual disk through the second child node of the virtual machine template. The third child node of the machine, the VHD virtual machine is formed by the parent node, the second child node of the virtual machine template, and the third child node of the VHD virtual machine. 12. The device of claim 11, further comprising: The judging module is configured to perform an empty judging operation on the second child node of the virtual machine template, and delete the second child node of the virtual machine template when the second child node of the virtual machine template is an empty node. 13. The device according to claim 9, wherein the import module comprises: A first importing unit, configured to import the system disk information of the virtual machine into the VHD virtual machine as the data disk information of the VHD virtual machine; The second importing unit is configured to import the registry information of the virtual machine into the registry of the VHD virtual machine, and update the registry information of the VHD virtual machine according to the data disk information in the VHD virtual machine. 14. A device for upgrading a virtual machine, characterized in that the device comprises: A first conversion module, configured to convert the virtual machine template into a new virtual machine, and install a new application or patch in the new virtual machine; A second converting module, configured to convert the new virtual machine installed with a new application or patch into a new virtual machine template; The integration module is configured to integrate the child node of the new virtual machine template with the parent node of the new virtual machine template to obtain a new parent node to replace the original parent node of the new virtual machine template. 15. The device according to claim 14, wherein the first conversion module is further used for: Selecting a child node of the new virtual machine in the disk node tree structure, and installing a new application or patch on the child node of the new virtual machine. 16. The device according to claim 15, wherein the integration module specifically comprises: a replacement unit, configured to select the child node of the new virtual machine template and the parent node of the new virtual machine template in the disk node tree structure as the new parent node of the new virtual machine template to replace the The original parent node of the new virtual machine template; An integrating unit, configured to integrate the child nodes of the new virtual machine template and the parent nodes of the new virtual machine template to obtain a new parent node of the new virtual machine template.