Method and device for live migration of virtual machine in a multi-root i/o virtualization environment and computing host thereof

A system for live migration of a virtual machine in a multi-root I/O virtualization (MR-IOV) environment, comprising:

• an MR-IOV device;
• a plurality of computing hosts, wherein each computing host is communicatively coupled to the MR-IOV device via a PCIe link;
• and
• a management host, comprising a physical function (PF) and configured to implement a plurality of virtual functions (VF), wherein the management host is communicatively coupled to the MR-IOV device via a PCIe slot of the MR-IOV device;
• wherein a source computing host of the computing hosts migrates a source virtual machine (VM) in the source computing host to a destination VM in a destination computing host of the computing hosts, wherein the source VM includes a source VF;
• the source computing host transmits a request message to the management host;
• and
• the management host reassigns a first VF corresponding to the source VF in the management host to the destination VM according to the request message.

A method for live migration of a virtual machine in a multi-root I/O virtualization (MR-IOV) environment, used in a computing host, wherein the method comprises:

• controlling a hypervisor to migrate a source virtual machine (VM) including a source virtual function (VF) in the computing host to a destination VM in a destination computing host;
• and
• transmitting a configuration message to the destination computing host,
• wherein the computing host and the destination computing host are coupled to an MR-IOV device to communicate with a management host.

A computing host for live migration of a virtual machine in a multi-root I/O virtualization (MR-IOV) environment, comprising:

• one or more processors;
• and
• one or more computer storage media, storing one or more computer-readable instructions, wherein the processor is configured to drive the computer storage media to execute the following tasks:
• controlling a hypervisor to migrate a source virtual machine (VM) including a source virtual function (VF) in the computing host to a destination VM in a destination computing host;
• and
• transmitting a configuration message to the destination computing host,
• wherein the computing host and the destination computing host are coupled to an MR-IOV device to communicate with a management host.

A computing host for live migration of a virtual machine in a multi-root I/O virtualization (MR-IOV) environment, comprising:

• one or more processors;
• and
• one or more computer storage media, storing one or more computer-readable instructions, wherein the processor is configured to drive the computer storage media to execute the following tasks:
• controlling a hypervisor to migrate a source virtual machine (VM) including a source virtual function (VF) in a source computing host to a destination VM in the computing host;
• transmitting a request message to a management host to request the management host to reassign a first VF corresponding to the source VF in the management host to the destination VM according to the request message,
• wherein the source computing host and the computing host are coupled to an MR-IOV device to communicate with the management host.