Live migration of a guest from a source hypervisor to a target hypervisor

摘要

A method and system for sending early notification when a guest migrates in a virtual machine system. A guest hosted by a computer system is migrating from a source hypervisor to a target hypervisor. During the migration, the source hypervisor stops transmission of outbound packets from the guest. A signal is sent to the target hypervisor after stopping the transmission and before completing migration of the guest. The signal requests that a notification containing network addresses of the guest be sent to network devices associated with the target hypervisor.

主权项

1. A method comprising:
initiating, by a source hypervisor executed by a processing device, migration of a guest, wherein the migration comprises copying guest data from the source hypervisor to a target hypervisor; preventing by the source hypervisor, during the migration, subsequent changes to network addresses of the guest; transmitting to the target hypervisor, by the source hypervisor, a notification before all of the guest data has been copied to the target hypervisor, wherein the notification specifies a network address of the guest and is separate from the guest data copied to the target hypervisor; and transmitting to the target hypervisor, by the source hypervisor a signal requesting that the notification be sent to a network device associated with the target hypervisor; wherein the signal is transmitted after the notification via a management component in response to a status request from the target hypervisor.