Virtual machine mirror image updating method, server and desktop cloud system

Abstract

The invention provides a virtual machine mirror image updating method, a server and a desktop cloud system, and relates to the field of computers. The dependency relationship after a main mirror image and a sub mirror image are updated and upgraded can be established to realize the smooth upgrade of the main mirror image and the sub mirror image. The method comprises the following steps of: after the main mirror image is established, dividing the whole main mirror image into a block area; after the main mirror image is updated, dividing each updated part into a block area; when the sub mirror image is established, copying the block area structure of the main mirror image from a server to serve as the block area structure of the sub mirror image; after the sub mirror image is updated, dividing each updated part into a block area; when the main mirror image is upgraded, obtaining the overlapped part of the block area of the updated part of the main mirror image and the block area of the updated part of the sub mirror image by the server; and according to the overlapped part, combining the updated part of the main mirror image into the sub mirror image. The embodiment of the invention is used for establishing the dependency relationship after the main mirror image and the sub mirror image are updated and upgraded, and the smooth upgrade of the main mirror image and the sub mirror image is realized.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method for updating a virtual machine image, a server and a desktop cloud system. Background technique [0002] The desktop cloud system includes VDI (Virtual Desktop Infrastructure, virtual desktop infrastructure) and Streaming (streaming) two solutions. Among them, VDI adopts the principle of "centralized computing, distributed display", and supports hosting the workload (operating system, application program, user data) of the client device desktop on the server in the data center. For the virtual desktop generated by the workload of the device desktop, the user can communicate with the virtual desktop through other client devices that support the remote desktop protocol, so that the user can use other client devices that support the remote desktop protocol to access the desktop of the above client device. [0003] Currently, an existing VDI technology adopts streaming technology, ...

AI Technical Summary

Problems solved by technology

[0005] However, the above method is to maintain all IO (Input Output, input and output) data based on the file level (that is, to read and write a piece of data in a file), and it will mirror the "Documents and Settings" file in the system disk of the main virtual machine folder (the folder storing the desktop load) to other disks, and users are not allowed to install any applications on the system disk of the client virtual machine, that is, for the client virtual machine, the main image is read-only, only when the After the client updates the master image, the client can update, but the computer name, domain identification information, etc. still need to be maintained at the block level (that is, data access is performed by reading and writing one or a segment of addresses in the storage space)

Therefore, the existing technology cannot save the changes made by the user to the data in the sub-mirror on the client side, thus limiting the user's operations on the client side

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