Disclosed in the present invention are an increment
simulation method and
system for
mirror image data in a cloud environment, and a related device. The solution involves three main sections, that is, a cloud
mirror image comparison marking section, a cloud
mirror image running memory initialization
backup section, and a virtual
system file-level increment merging and memory updating section, wherein the cloud mirror image comparison marking section is configured to identify and track a file-level difference between a basic-version cloud mirror
image system and a target-version cloud mirror
image system, and to mark and
record the difference; the cloud mirror image running memory initialization
backup section is configured to back up data in a running memory of a cloud mirror
image system and to initialize a running memory of a virtual
system that is run in a cloud environment; and the
virtual machine system file-level increment merging and memory updating section is configured to update a main
file system item by item on the basis of detected incremental data, and also to use an
operating system sleep wake-up mechanism in cooperation with the updating of a running memory base pointer to switch running memory data of a target
virtual machine. The present system and solution can implement the increment
simulation of mirror image data in a cloud environment without interrupting a running
virtual machine in the cloud environment, thereby improving the overall working efficiency.