Virtual Machine Live Migration Method And Communications Device

A virtual machine live migration method, applied to a destination server for virtual machine migration, wherein the destination server comprises a single-root input/output virtualization (SR-IOV) network adapter, wherein the destination server runs a virtual machine manager and a live migration module, and wherein the method comprises:

• obtaining, by the virtual machine manager, a live migration command, wherein the live migration command is used to indicate that a first virtual machine in a source server is to be migrated to a second virtual machine in the destination server;
• receiving, by the virtual machine manager, state information of a first virtual network adapter corresponding to the first virtual machine sent by the source server;
• and
• restoring, by the live migration module, the state information to the SR-IOV network adapter according to an instruction of the virtual machine manager.

A communications device, comprising at least one processor, one or more memories coupled to the at least one processor, and a single-root input/output virtualization (SR-IOV) network adapter, wherein:

• the one or more memories store programming instructions for execution by the at least one processor to run a first virtual machine, a virtual machine manager, and a live migration module according to code in the one or more memories, wherein the first virtual machine comprises a first virtual function driver, wherein the one or more memories store the programming instructions for execution by the at least one processor further to perform operations by using the virtual machine manager, the live migration module, and the first virtual function driver, and wherein the operations comprise:
• delivering, by the virtual machine manager, a live migration command to the live migration module;
• obtaining, by the live migration module according to the live migration command, information that needs to be migrated and that is about the first virtual machine, wherein the information that needs to be migrated and that is about the first virtual machine comprises state information of a first virtual network adapter and memory data of the first virtual machine;
• reporting the information that needs to be migrated and that is about the first virtual machine to the virtual machine manager;
• and
• sending, by the virtual machine manager, the state information and the memory data of the first virtual machine to a destination server.

A communications device, comprising at least one processor, one or more memories coupled to the at least one processor, and a single-root input/output virtualization (SR-IOV) network adapter, wherein:

• the one or more memories store programming instructions for execution by the at least one processor to run a virtual machine manager and a live migration module according to code in the one or more memories, wherein the one or more memories store the programming instructions for execution by the at least one processor further to perform operations by using the virtual machine manager and the live migration module, and wherein the operations comprise:
• obtaining, by the virtual machine manager, a live migration command, wherein the live migration command is used to indicate that a first virtual machine in a source server is to be migrated to a second virtual machine in a destination server;
• receiving, by the virtual machine manager, state information of a first virtual network adapter corresponding to the first virtual machine sent by the source server;
• and
• restoring, by the live migration module, the state information to the SR-IOV network adapter according to an instruction of the virtual machine manager.