Host system and remote device server for maintaining virtual connectivity during live migration of virtual machine, and connectivity maintaining method using the same

摘要

A host system includes: a virtual machine migration controller for performing live-migration of a virtual machine and driving the virtual machine; and a virtual connection unit for establishing a virtual connection with a remote device server to which a device allocated to the virtual machine is connected. The host system further includes and a virtual controller for providing information for establishing the virtual connection to a destination host of the live-migration, or receiving the information for establishing the virtual connection from a source host from which the live-migration starts and providing the information to the virtual connection unit, driving the virtual machine which has live-migrated.