A hybrid local storage transfer scheme for live migration of I/O intensive workloads
Proceedings of the 21st international symposium on High-Performance Parallel and Distributed Computing
A quantitative study of virtual machine live migration
Proceedings of the 2013 ACM Cloud and Autonomic Computing Conference
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Live migration of virtual machines is an important issue in Cloud computing environments: when physical hosts are overloaded, some or all virtual machines can be moved to a less loaded host. Live migration poses additional challenges when virtual machines use local persistent storage, since the complete disk state needs to be transferred to the destination host while the virtual machines are running and hence are altering the disk state. In this paper, several approaches for implementing and synchronizing persistent storage during live migration of virtual machines in Cloud infrastructures are presented. Furthermore, the approaches also enable users to migrate swap space, which is currently not possible on most virtual machine hyper visors. Finally, measurements regarding disk synchronization, migration time and possible overheads are presented.