Patent ID: 11886903
Assignee: nan
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A host computing device, comprising:
at least one processor; and
at least one computer-readable medium encoded with instructions which, when executed by the at least one processor, cause the host computing device to:
execute a first virtual machine and a second virtual machine on the host computing device, wherein:
the first virtual machine manages guest virtual machines,
the second virtual machine operates as a temporary bridge virtual machine including temporary bridge I/O data and is connected to the first virtual machine, and
the first virtual machine operates as a I/O data bridge to a physical resource, wherein the first virtual machine is configured to enable the guest virtual machines to communicate with a first I/O process to access a virtual resource;

live migrate the guest virtual machines connected to the first I/O process of the first virtual machine to the second virtual machine on the host computing device,
wherein live migrating the guest virtual machines connected to the first I/O process of the first virtual machine to the second virtual machine on the host computing device comprises:
connecting the guest virtual machines to a second I/O process of the second virtual machine, and
live migrating the guest virtual machines to the second I/O process of the second virtual machine;

after live migrating the guest virtual machines:
pausing the second I/O process of the second virtual machine, and
flushing the temporary bridge I/O data of the second virtual machine to the first virtual machine;

subsequent to pausing the second I/O process of the second virtual machine and flushing the temporary bridge I/O data of the second virtual machine to the first virtual machine, send a notification from the second virtual machine to the first virtual machine that prompts the first virtual machine to:
transfer, to the physical resource, outgoing data communicated to the first I/O process, and
relinquish control of the physical resource;

based on the notification:
transferring, by the first virtual machine and to the physical resource, the outgoing data communicated to the first I/O process, and
relinquishing, by the first virtual machine, control of the physical resource;

after the first virtual machine has relinquished control of the physical resource;
acquire, by the second virtual machine, control of the physical resource, and
destroy temporary I/O data bridges connecting the guest virtual machines to the first virtual machine; and

after the second virtual machine has acquired control of the physical resource, enable the guest virtual machines to communicate with the second I/O process of the second virtual machine to access the virtual resource.