System for migrating a virtual machine between computers

摘要

An I/O device performs data input and data output between the I/O device and first and second computers. An I/O switch relays input and output data between the I/O device and each of the first and second computers. A device emulator emulates the I/O device when a virtual machine running on the first computer and directly accessing the I/O device is migrated from the first computer to the second computer. A connection controller controls switching connection between any one of the first and second computers and any one of the I/O device and the device emulator. The first computer is connected to the I/O device and the second computer is connected to the device emulator until the virtual machine running on the first computer is stopped, and the second computer is connected to the I/O device after the virtual machine running on the first computer is stopped.

主权项

1. A system for migrating a virtual machine between computers, the system comprising:
a first computer in which a first virtual machine is created; a second computer to which the first virtual machine created in the first computer is migrated; an I/O device to perform data input and data output between the I/O device and each of the first and second computers; and an I/O switch to relay input and output data between the I/O device and each of the first and second computers, wherein
a device emulator is configured to emulate the I/O device while the virtual machine running on the first computer and directly accessing the I/O device is migrated from the first computer to the second computer; anda connection controller is configured so that
the first computer is connected to the I/O device and the second computer is connected to the device emulator until the virtual machine running on the first computer is stopped, andthe second computer is connected to the I/O device after the virtual machine running on the first computer is stopped, whereinafter the device emulator and the connection controller are configured, the first computer connects the second computer to the device emulator when the second computer is in a state in which a second virtual machine is created as a virtual machine that is migrated from the first virtual machine and an operation of the created second virtual machine is suspended.