Sun 14 Apr 2019 11:15 - 11:40 at Garden Room - Session1

Hypervisors are increasingly complex and must be often updated for applying security patches, bug fixes, and feature upgrades. However, in a virtualized cloud infrastructure, updates to an operational hypervisor can be highly disruptive. Before being updated, virtual machines (VMs) running on a hypervisor must be either migrated away or shut down, resulting in downtime, performance loss, and network overhead. We present a new technique, called HyperFresh, to transparently replace a hypervisor with a new updated instance without disrupting any running VMs. A thin shim layer, called the hyperplexor, performs live hypervisor replacement by remapping guest memory to a new updated hypervisor on the same machine. The hyperplexor leverages nested virtualization for hypervisor replacement while minimizing nesting overheads during normal execution. We present a prototype implementation of the hyperplexor on the KVM/QEMU platform that can perform live hypervisor replacement within 10ms. We also demonstrate how a hyperplexor-based approach can used for sub-second relocation of containers for live OS replacement.

Sun 14 Apr
Times are displayed in time zone: (GMT-04:00) Eastern Time (US & Canada) change

10:00 - 12:05: Research Papers - Session1 at Garden Room
vee-2019-papers10:00 - 10:25
Wenhao LiShanghai Jiao Tong University, China, Yubin XiaShanghai Jiao Tong University, China, Long LuNortheastern University, n.n., Haibo ChenShanghai Jiao Tong University, China, Binyu ZangShanghai Jiao Tong University, China
vee-2019-papers10:25 - 10:50
Ethan JohnsonUniversity of Rochester, USA, Komail DharseeUniversity of Rochester, USA, John CriswellUniversity of Rochester, USA
vee-2019-papers10:50 - 11:15
Hao Li , Xuefei XuIntel, China, Jinkui RenIntel, China, Yaozu DongIntel, China
vee-2019-papers11:15 - 11:40
Spoorti DoddamaniBinghamton University, USA, Piush Kumar SinhaBinghamton University, USA, Hui LuBinghamton University, USA, Tsu-Hsiang K. ChengBinghamton University, USA, Hardik H. BagdiBinghamton University, USA, Kartik GopalanBinghamton University, USA
vee-2019-papers11:40 - 12:05
Pierre OlivierVirginia Tech, USA, Daniel ChibaVirginia Tech, USA, Stefan LankesRWTH Aachen University, Germany, Changwoo MinVirginia Tech, USA, Binoy RavindranVirginia Tech, USA