Pre-warming destination for fast live migration

摘要

A method for fast migrating of a source virtual machine located on a source host to one or more destination hosts is provided. A source migration manager receives an identity of a destination host. The source migration manager copies at least one data segment corresponding to a portion of a state of a source virtual machine to the destination host. The source migration manager remains in a warm-up phase and continues copying data segments corresponding to the state of the source virtual machine to the destination host, even if the entire state of the source virtual machine has been copied to the destination host. The source migration manager receives a command to migrate the source virtual machine to the destination host after copying the at least one data segment to the destination host. If a warm-up exit condition has been attained, the source migration manager exits the warm-up migration phase.

主权项

1. A method, comprising:
identifying, by a source host processor, a destination host as an indication to the source host processor to enter a pre-warm-up phase for live migration of a source virtual machine residing on the source host processor to the destination host; responsive to the source host processor entering the pre-warm-up phase, copying, by the source host processor, one or more data segments corresponding to a portion of a state of the source virtual machine to the destination host, the one or more data segments corresponding to a portion of memory employed by the source virtual machine; and receiving a command to migrate the source virtual machine to the destination host after copying the one or more data segments to the destination host.