Research on dynamic migration of virtual machine based on device-agent mechanism
Yusong Tan · Jisuanji yingyong yanjiu · 2009
In blade servers,data centers,and other virtual environment,the ability to guarantee uninterrupted service,has high demand,so needing virtual machine without interruption to access I/O and other devices during live VM migration.In response,this paper proposed device-agent mechanism.Device-agent mechanism,including three major modules,device-agent module,remote access device module and device dynamic exchange module.Device-agent module was mainly in charge the I/O transactions and the states of virtual device during live VM migration.Remote access device module made virtual machines access remote I/O devices like access local's.Device dynamic exchange module allowed virtual machine to re-orientation to the physical device dynamically.Experiments show that device-agent mechanism have guaranteed the I/O uninterrupted service during live VM migration,and improve the quality of service.