Agile Live Migration of Virtual Machines
Umesh Deshpande, Danny Chan, et al.
IPDPS 2016
Public cloud software marketplaces already offer users a wealth of choice in operating systems, database management systems, financial software, and virtual networking, all deployable and configurable at the click of a button. Unfortunately, this level of customization has not extended to emerging hypervisor-level services, partly because traditional virtual machines (VMs) are fully controlled by only one hypervisor at a time. Currently, a VM in a cloud platform cannot concurrently use hypervisor-level services from multiple third-parties in a compartmentalized manner. We propose the notion of a multi-hypervisor VM, which is an unmodified guest that can simultaneously use services from multiple coresident, but isolated, hypervisors. We present a new virtualization architecture, called Span virtualization, that leverages nesting to allow multiple hypervisors to concurrently control a guest's memory, virtual CPU, and I/O resources. Our prototype of Span virtualization on the KVM/QEMU platform enables a guest to use services such as introspection, network monitoring, guest mirroring, and hypervisor refresh, with performance comparable to traditional nested VMs.
Umesh Deshpande, Danny Chan, et al.
IPDPS 2016
Umesh Deshpande, Yang You, et al.
CLOUD 2014
Byungchul Tak, Canturk Isci, et al.
USENIX ATC 2017
Kartik Gopalan, Lan Huang, et al.
ACM TOMM