Conference,
Resource Allocation using Virtual Machine Migration: A Survey
(2013)
Abstract
As virtualization is proving to be dominant in
enterprise and organizational networks there is a need for
operators and administrators to pay more attention to live
migration of virtual machines (VMs) with the main objective
of workload balancing, monitoring, fault management, low-
level system maintenance and good performance with minimal
service downtimes. It is also a crucial aspect of cloud computing
that offers strategies to implement the dynamic allocation of
resources. Virtualization also enables virtual machine
migration to eliminate hotspots in data centers .However the
security associated with VMs live migration has not received
thorough analysis. Further, the negative impact on service
levels of running applications is likely to occur during the
live VM migration hence a better understanding of its
implications on the system performance is highly required.
In this survey we explore the security issues involved in live
migration of VMs and demonstrate the importance of security
during the migration process. A model which demonstrates
the cost incurred in reconfiguring a cloud-based environment
in response to the workload variations is studied. It is also
proved that migration cost is acceptable but should not be
neglected, particularly in systems where service availability
and response times are imposed by stringent Service Level
Agreements (SLAs). A system that provides automation of
monitoring and detection of hotspots and determination of
the new mapping of physical to virtual resources and finally
initiates the required migrations based on its observations is
also studied. These are experimented using Xen Virtual
Machine Manager. Migration based resource Managers for
virtualized environments are presented by comparing and
discussing several types of underlying algorithms from
algorithmistic issues point of view.
