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A live storage migration mechanism over wan and its performance evaluation

Published: 15 June 2009 Publication History
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  • Abstract

    Live migration of virtual machines is a key technology for the next generation of IaaS cloud services, contributing to dynamic portability and mobility of VM-based services among datacenters. The practical use of live migration, however, is still limited inside a single datacenter. In WAN environments, network latencies cause inevitable I/O performance degradation of remotely-shared storage between source and destination sites; which is required to continue disk access of VMs before/after live migration. In our previous work, we proposed a transparent, relocatable I/O mechanism for VM migration, which enables VM disk images to be completely migrated to remote nodes without any modification of virtual machine monitors. In this paper, we present detailed performance evaluation of the proposed system, emulating a realistic WAN environment between remote datacenters. Experiments showed the proposed system achieved feasible I/O performance for various workloads including I/O intensive applications. Its background copy mechanism efficiently prefetches not-yet-cached blocks by exploiting the available bandwidth of WAN, thereby minimizing temporary performance degradation of the migrating VM system.

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    cover image ACM Conferences
    VTDC '09: Proceedings of the 3rd international workshop on Virtualization technologies in distributed computing
    June 2009
    82 pages
    ISBN:9781605585802
    DOI:10.1145/1555336
    • General Chair:
    • Kate Keahey,
    • Program Chair:
    • Renato Figueiredo
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 15 June 2009

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    Author Tags

    1. live migration
    2. storage
    3. virtual machine

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    • (2018)Applications nature aware virtual machine provisioning in cloudInternational Journal of Ad Hoc and Ubiquitous Computing10.1504/IJAHUC.2018.08957927:2(93-107)Online publication date: 1-Jan-2018
    • (2018)A Survey on Virtual Machine Migration: Challenges, Techniques, and Open IssuesIEEE Communications Surveys & Tutorials10.1109/COMST.2018.279488120:2(1206-1243)Online publication date: Oct-2019
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