Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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A Tool for Analyzing VM Creation Failure caused by Virtual Disk Faults

가상 디스크 결함에 의한 가상 머신 생성 실패 진단 및 분석 도구

  • Ku, Min-O (School of Computer Science and Engineering, Konkuk University) ;
  • Min, Dug-Ki (School of Computer Science and Engineering, Konkuk University)
  • Received : 2012.08.02
  • Accepted : 2012.08.19
  • Published : 2012.09.30
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Abstract

In this paper, we present a tool (named VMBootFailMonitor) to detect and analyze a failure of a VM boot creation caused by faults on virtual disks of a Xen-based VM. Also, we presents an architecture and detail analysis process of the virtual disk faults in our tool. Especially, VMBootFailMonitor provides a causual analysis result for a case of VM creation failure based on three modules which performs virtual disk analysis, virtualized system analysis and system log analysis. We also support a comparison result between boot times of normal VMs and fault detection times of VM creation based on abnormal virtual disks. At result, our tool detects VM boot failures (3~6 seconds) within normal VM boot times (8~16 seconds).

본 논문에서는 가상화 기술 기반의 가상 컴퓨팅 환경에서 가상 디스크의 내 외부적 결함에 의한 가상 머신 생성 실패 감지 및 원인 분석 기능을 제공하는 도구 (VMBootFailMonitor)를 제시한다. 또한, 본 논문에서는 이러한 가상 디스크 결함으로 초래되는 가상 머신 생성 실패 및 실패 원인의 사례를 제공하며, Xen 기반의 가상화된 시스템 상에서 이를 분석하는 도구의 설계와 일련의 결함 분석 방법을 제공한다. 특히, VMBootFailMonitor는 가상 디스크 분석 모듈, 가상화된 시스템 분석 모듈 및 시스템 로그 분석 모듈을 기반으로 VM 생성 실패에 대한 원인 분석 결과를 제공한다. 그리고 본 논문에서는 가상 머신 운영체제의 정상 부트 시간과 본 논문에서 제시하는 도구를 통한 부트 실패 감지의 시간적 측면에서의 비교 결과를 제공한다. 본 실험 결과, 정상 가상 디스크 기반의 가상 머신 부트 완료 시간 (8~16초) 보다 짧은 3~6초대의 가상 머신 부트 실패 및 가상 디스크 오류 감지 결과를 나타내었다.

Keywords

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