Method for controlling virtual machine

摘要

A first computer starts to copy data of a virtual machine running on the first computer from the first computer to a second computer. The first computer monitors an index value related to conditions of running the virtual machine on the second computer. The first computer causes, based on the index value, the second computer to start operation of the virtual machine based on the data copied from the first computer to the second computer and terminating operation of the virtual machine running on the first computer.

主权项

1. A non-transitory computer-readable recording medium storing a program that causes a processor in a first computer to execute a procedure, the procedure comprising:
turning, when the processor detects a first trigger event, a migration preparation flag ON which indicates that migration preparation for a virtual machine is underway, and starting to copy data of the virtual machine running on the first computer to a second computer; monitoring an index value related to conditions of running the virtual machine on the second computer; terminating the virtual machine when the processor detects that the index value falls below a threshold: copying a portion of data of the virtual machine which is updated after a previous copy; instructing the second computer to start the virtual machine; turning the migration preparation flag OFF when the processor detects a second trigger event; and instructing the second computer to cancel the migration preparation.