Virtual Machine Live Migration Method, Virtual Machine Memory Data Processing Method, Server, and Virtual Machine System

A virtual machine memory data processing method applied to a virtual machine system, wherein the virtual machine system comprises a virtual machine migration management unit, a host device, and a physical network interface card, wherein at least one virtual machine runs on the host device, wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner, and wherein when any virtual machine in the virtual machine system is migrated, the method comprises:

• receiving, by a to-be-migrated source virtual machine, a status information read notification sent by the physical network interface card, wherein the physical network interface card sends the status information read notification after writing, according to a received message for shutting down the source virtual machine that is sent by the virtual machine migration management unit, status information of a virtual network interface card corresponding to the source virtual machine into a memory of the source virtual machine;
• reading, by the source virtual machine, the status information of the virtual network interface card of the source virtual machine from the memory of the source virtual machine according to the status information read notification;
• and
• writing the status information into the memory of the source virtual machine again.

A virtual machine migration method, applied to a virtual machine system, wherein the virtual machine system comprises a virtual machine migration management unit, a host device, and a physical network interface card, wherein at least one virtual machine runs on the host device, wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner, and wherein the method comprises:

• receiving, by a to-be-migrated source virtual machine, a message for starting virtual machine migration that is sent by the virtual machine migration management unit;
• setting, by the source virtual machine, a dirty write flag according to the message for starting virtual machine migration;
• reading, by the source virtual machine, the new data from the memory of the source virtual machine according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• writing the new data into the memory of the source virtual machine again according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• receiving, by the source virtual machine, a message for shutting down the source virtual machine that is sent by the virtual machine migration management unit;
• writing, by the source virtual machine according to the message for shutting down the source virtual machine, status information of a virtual network interface card corresponding to the source virtual machine into the memory of the source virtual machine;
• and
• triggering, by the virtual machine migration management unit, a memory iteration operation, wherein the memory iteration operation is used to migrate data in the memory of the source virtual machine to a destination virtual machine.

A virtual machine migration method applied to a virtual machine system, wherein the virtual machine system comprises a virtual machine migration management unit, a physical device, and a network interface card, wherein at least one virtual machine runs on the physical device, wherein at least one virtual network interface card runs on the network interface card, wherein each virtual machine corresponds to one virtual network interface card, and wherein each virtual machine receives and sends a packet using a corresponding virtual network interface card, and wherein the method comprises:

• receiving, by a to-be-migrated source virtual machine, a message for starting virtual machine migration that is sent by the virtual machine migration management unit;
• setting, by the source virtual machine, a dirty write flag according to the message for starting virtual machine migration;
• reading, by the source virtual machine, the new data from the memory of the source virtual machine according to the dirty write flag when it is determined that new data is written into a memory of the source virtual machine;
• writing the new data into the memory of the source virtual machine again according to the dirty write flag when it is determined that new data is written into a memory of the source virtual machine;
• receiving, by the source virtual machine, a status information read notification sent by the network interface card, wherein the status information read notification is sent after the network interface card writes status information of a virtual network interface card corresponding to the source virtual machine into the memory of the source virtual machine;
• and the network interface card triggers, after receiving a message for shutting down the source virtual machine that is sent by the virtual machine migration management unit, a step of writing the status information into the memory of the source virtual machine;
• reading, by the source virtual machine, the status information of the virtual network interface card of the source virtual machine from the memory of the source virtual machine according to the status information read notification, and writing the status information into the memory of the source virtual machine again;
• and
• triggering, by the virtual machine migration management unit, a memory iteration operation, wherein the memory iteration operation is used to migrate data in the memory of the source virtual machine to a destination virtual machine.

A virtual machine system, wherein the virtual machine system comprises:

• a virtual machine migration management unit;
• a host device, wherein at least one virtual machine runs on the host device;
• and
• a physical network interface card, wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, and wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner, wherein the virtual machine migration management unit is configured to send a message for starting virtual machine migration to a source virtual machine, wherein the source virtual machine is a to-be-migrated virtual machine, and
• wherein the source virtual machine is configured to:
• receive the message for starting virtual machine migration that is sent by the virtual machine migration management unit,
• set a dirty write flag according to the message for starting virtual machine migration, and
• read the new data from the memory of the source virtual machine according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• and
• write the new data into the memory of the source virtual machine again according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine.

A virtual machine system, wherein the virtual machine system comprises:

• a virtual machine migration management unit,
• a host device, wherein at least one virtual machine runs on the host device;
• and
• a physical network interface card, wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, and wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner, wherein the virtual machine migration management unit is configured to send a message for shutting down a source virtual machine to the source virtual machine,
• wherein the source virtual machine is a to-be-migrated virtual machine, and
• wherein the source virtual machine is configured to:
• receive the message for shutting down the source virtual machine that is sent by the virtual machine migration management unit;
• and
• write, according to the message for shutting down the source virtual machine, status information of a virtual network interface card corresponding to the source virtual machine into a memory of the source virtual machine.

A virtual machine system, wherein the virtual machine system comprises:

• a virtual machine migration management unit;
• a host device, wherein at least one virtual machine runs on the host device;
• and
• a physical network interface card;
• wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, and wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner,
• wherein the virtual machine migration management unit is configured to send a message for shutting down a source virtual machine to the physical network interface card, wherein the source virtual machine is a to-be-migrated virtual machine,
• wherein the physical network interface card is configured to:
• write, according to the received message for shutting down the source virtual machine, status information of a virtual network interface card corresponding to the source virtual machine into a memory of the source virtual machine;
• and
• send a status information read notification to the source virtual machine, and wherein the source virtual machine is configured to:
• receive the status information read notification sent by the physical network interface card;
• read the status information of the virtual network interface card of the source virtual machine from the memory of the source virtual machine according to the status information read notification;
• and
• write the status information into the memory of the source virtual machine again.

A virtual machine system, wherein the virtual machine system comprises:

• a virtual machine migration management unit;
• a host device, wherein at least one virtual machine runs on the host device;
• and
• a physical network interface card, wherein at least one virtual network interface card runs on the physical network interface card, wherein each virtual machine corresponds to at least one virtual network interface card, and wherein the physical network interface card reads and writes data in a memory of each virtual machine in a direct memory access manner,
• wherein the virtual machine migration management unit is configured to send a message for starting virtual machine migration to a source virtual machine,
• wherein the source virtual machine is configured to:
• receive the message for starting virtual machine migration that is sent by the virtual machine migration management unit;
• set a dirty write flag according to the message for starting virtual machine migration;
• read the new data from the memory of the source virtual machine according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• write the new data into the memory of the source virtual machine again according to the dirty write flag when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• receive a message for shutting down the source virtual machine that is sent by the virtual machine migration management unit when it is determined that the physical network interface card writes new data into a memory of the source virtual machine;
• and
• write, according to the message for shutting down the source virtual machine, status information of a virtual network interface card corresponding to the source virtual machine into the memory of the source virtual machine when it is determined that the physical network interface card writes new data into a memory of the source virtual machine,
• wherein the virtual machine migration management unit is further configured to trigger a memory iteration operation, and
• wherein the memory iteration operation is used to migrate data in the memory of the source virtual machine to a destination virtual machine.

A virtual machine system, wherein the virtual machine system comprises:

• a virtual machine migration management unit;
• a physical device wherein at least one virtual machine runs on the physical device;
• and
• a network interface card, wherein at least one virtual network interface card runs on the network interface card, wherein each virtual machine corresponds to one virtual network interface card, and wherein each virtual machine receives and sends a packet using a corresponding virtual network interface card,
• wherein the virtual machine migration management unit is configured to send a message for starting virtual machine migration to a source virtual machine,
• wherein the source virtual machine is configured to:
• receive the message for starting virtual machine migration that is sent by the virtual machine migration management unit;
• set a dirty write flag according to the message for starting virtual machine migration;
• and
• read the new data from the memory of the source virtual machine according to the dirty write flag when it is determined that the network interface card writes new data into a memory of the source virtual machine;
• and
• write the new data into the memory of the source virtual machine again according to the dirty write flag when it is determined that the network interface card writes new data into a memory of the source virtual machine,
• wherein the virtual machine migration management unit is further configured to send a message for shutting down the source virtual machine to the network interface card,
• wherein the network interface card is configured to:
• write, according to the received message for shutting down the source virtual machine, status information of a virtual network interface card corresponding to the source virtual machine into the memory of the source virtual machine;
• and
• send a status information read notification to the source virtual machine, wherein the source virtual machine is further configured to:
• receive the status information read notification sent by the network interface card;
• read the status information of the virtual network interface card of the source virtual machine from the memory of the source virtual machine according to the status information read notification;
• and
• write the status information into the memory of the source virtual machine again,
• wherein the virtual machine migration management unit is further configured to trigger a memory iteration operation, and
• wherein the memory iteration operation is used to migrate data in the memory of the source virtual machine to a destination virtual machine.