— Presentation at Ottawa Linux Symposium 2008 —
August 27, 2008
The 10th Ottawa Linux*1 Symposium (OLS 2008) was held in Ottawa, Canada, during July 21-27, 2008. OLS is one of most large and famous international Linux conference that covers all technologies around Linux such as kernel, tracing and profiling, security, virtualization, etc.
Systems Development Laboratory, Hitachi, Ltd., presented a paper—titled "VESPER (Virtual Embraced Space ProbER)"—concerning system dependability using cluster technology in virtualization.
Recently, the trend of applying virtualization technology in server consolidation is getting much more noticeable. However, system dependability in virtualization should be concerned. To address this topic, we have been studying on cluster technology for virtualization.
In OLS 2008, we proposed VESPER which stands for Virtual Embraced Space ProbER (Fig. 1) to provide rapid system switching and failure analysis facility for cluster systems in virtualization.
VESPER is the framework that gathers detail information about virtual machine using probes into the kernel space on the virtual machine instead of periodic health-checking message used in conventional cluster systems. With the help of those probes, VESPER can improve on failure detection latency and on failure analysis (Fig. 2).
(By Sungho Kim, Systems Development Laboratory)
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