VNsnap: Taking snapshots of virtual networked environments with minimal downtime

Kangarlou, Ardalan; Eugster, Patrick; Xu, Dongyan

doi:10.1109/dsn.2009.5270298

Cited by 41 publications

(24 citation statements)

References 19 publications

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“…This script consists of three phases: hot-del (lines 5-9), migration (lines 11-16), and hot-add (lines [18][19][20][21][22][23]. The wait all waits until all given VMs issue the SymVirt wait call.…”

Section: Methodsmentioning

confidence: 99%

Cooperative VM Migration: A Symbiotic Virtualization Mechanism by Leveraging the Guest OS Knowledge

Takano

Nakada

Hirofuchi

et al. 2013

IEICE Trans. Inf. & Syst.

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SUMMARYA virtual machine (VM) migration is useful for improving flexibility and maintainability in cloud computing environments. However, VM monitor (VMM)-bypass I/O technologies, including PCI passthrough and SR-IOV, in which the overhead of I/O virtualization can be significantly reduced, make VM migration impossible. This paper proposes a novel and practical mechanism, called Symbiotic Virtualization (SymVirt), for enabling migration and checkpoint/restart on a virtualized cluster with VMM-bypass I/O devices, without the virtualization overhead during normal operations. SymVirt allows a VMM to cooperate with a message passing layer on the guest OS, then it realizes VM-level migration and checkpoint/restart by using a combination of a user-level dynamic device configuration and coordination of distributed VMMs. We have implemented the proposed mechanism on top of QEMU/KVM and the Open MPI system. All PCI devices, including Infiniband, Ethernet, and Myrinet, are supported without implementing specific para-virtualized drivers; and it is not necessary to modify either of the MPI runtime and applications. Using the proposed mechanism, we demonstrate reactive and proactive FT mechanisms on a virtualized Infiniband cluster. We have confirmed the effectiveness using both a memory intensive micro benchmark and the NAS parallel benchmark.

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Section: Methodsmentioning

confidence: 99%

Cooperative VM Migration: A Symbiotic Virtualization Mechanism by Leveraging the Guest OS Knowledge

Takano

Nakada

Hirofuchi

et al. 2013

IEICE Trans. Inf. & Syst.

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“…However, there are studies (Kangarlou et al, 2009;Bloom, 1970;Vomel & Freiling, 2012) that have been discussed because of the importance of technology in understanding the literature. In this section, the mind map has been divided into two.…”

Section: Mind Mapmentioning

confidence: 99%

“…VNE are virtual machines that are connected using virtual network components e.g., virtual switches and virtual Network Interface Cards (NICs) (Kangarlou, Eugster, & Xu, 2009). In order to regenerate the events of an attack, VNsnaps was used to periodically take snapshots of the VNE.…”

Section: Virtulisationmentioning

confidence: 99%

A State-Of-The-Art Review of Cloud Forensics

Almulla

Iraqi

Jones

2014

JDFSL

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Cloud computing and digital forensics are emerging fields of technology. Unlike traditional digital forensics where the target environment can be almost completely isolated, acquired and can be under the investigators control; in cloud environments, the distribution of computation and storage poses unique and complex challenges to the investigators. Recently, the term "cloud forensics" has an increasing presence in the field of digital forensics. In this state-of-the-art review, we included the most recent research efforts that used "cloud forensics" as a keyword and then classify the literature into three dimensions: (1) survey-based, (2) technology-based and (3) forensics-procedural-based. We discuss widely accepted standard bodies and their efforts to address the current trend of cloud forensics. Our aim is not only to reference related work based on the discussed dimensions, but also to analyse them and generate a mind map that will help in identifying research gaps. Finally, we summarize existing digital forensics tools and the available simulation environments that can be used for evidence acquisition, examination and cloud forensics test purposes.

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“…VBN with VM replication approaches are survivable virtual infrastructure with active VM replication (SVI-Active-VM-Rep) [141] and a greedy randomized adaptive VM replication (VN-GRASP) [142]. VBN with VM checkpoint is suggested in VNsnap by [143]. SVI-Active-VM-Rep divides the problem in two sub-problems, VM placement and survivable virtual link mapping, and solves both using a heuristic algorithm which minimizes the reserved bandwidth.…”

Section: Resiliency In Cloud Integrated Infrastructurementioning

confidence: 99%

A Survey on Resiliency Techniques in Cloud Computing Infrastructures and Applications

Colman-Meixner

Develder

Tornatore

et al. 2016

IEEE Commun. Surv. Tutorials

127

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Abstract-Today's businesses increasingly rely on cloud computing, which brings both great opportunities and challenges. One of the critical challenges is resiliency: disruptions due to failures (either accidental or because of disasters or attacks) may entail significant revenue losses (e.g., US$ 25.5 billion in 2010 for North America). Such failures may originate at any of the major components in a cloud architecture (and propagate to others): (i) the servers hosting the application, (ii) the network interconnecting them (on different scales, inside a data center, up to wide-area connections), or (iii) the application itself. We comprehensively survey a large body of work focusing on resilience of cloud computing, in each (or a combination) of the server, network, and application components.First, we present the cloud computing architecture and its key concepts. We highlight both the infrastructure (servers, network) and application components. A key concept is virtualization of infrastructure (i.e., partitioning into logically separate units), and thus we detail the components in both physical and virtual layers. Before moving to the detailed resilience aspects, we provide a qualitative overview of the types of failures that may occur (from the perspective of the layered cloud architecture), and their consequences.The second major part of the paper introduces and categorizes a large number of techniques for cloud computing infrastructure resiliency. This ranges from designing and operating the facilities, servers, networks, to their integration and virtualization (e.g., also including resilience of the middleware infrastructure).The third part focuses on resilience in application design and development. We study how applications are designed, installed, and replicated to survive multiple physical failure scenarios as well as disaster failures.

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VNsnap: Taking snapshots of virtual networked environments with minimal downtime

Cited by 41 publications

References 19 publications

Cooperative VM Migration: A Symbiotic Virtualization Mechanism by Leveraging the Guest OS Knowledge

Cooperative VM Migration: A Symbiotic Virtualization Mechanism by Leveraging the Guest OS Knowledge

A State-Of-The-Art Review of Cloud Forensics

A Survey on Resiliency Techniques in Cloud Computing Infrastructures and Applications

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