A Recovery Conscious Framework for Fault Resilient Storage Systems

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dc.contributor.author Seshadri, Sangeetha
dc.contributor.author Liu, Ling
dc.contributor.author Chiu, Lawrence
dc.contributor.author Constantinescu, Cornel
dc.contributor.author Balachandran, Subashini
dc.date.accessioned 2008-02-27T22:36:36Z
dc.date.available 2008-02-27T22:36:36Z
dc.date.issued 2007
dc.identifier.uri http://hdl.handle.net/1853/20116
dc.description.abstract In this paper we present a recovery-conscious framework for improving the fault resiliency and recovery efficiency of highly concurrent embedded storage software systems. Our framework consists of a three-tier architecture and a suite of recovery conscious techniques. In the top tier, we promote fine-grained recovery at the task level by introducing recovery groups to model recovery dependencies between tasks. At the middle tier we develop highly effective mappings of dependent tasks to processor resources through careful tuning of recovery efficiency sensitive parameters. At the bottom tier, we advocate the use of recovery-conscious scheduling by careful serialization of dependent tasks, which provides high recovery efficiency without sacrificing system performance. We develop a formal model to guide the understanding and the development of techniques for effectively mapping fine-grained tasks to system resources, aiming at reducing the ripple effect of software failures while sustaining high performance even during system recovery. Our techniques have been implemented on a real industry-standard storage system. Experimental results show that our techniques are effective, non-intrusive and can significantly boost system resilience while delivering high performance. en_US
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.relation.ispartofseries CERCS; GIT-CERCS-07-21 en_US
dc.subject Availability en_US
dc.subject Fault resilience en_US
dc.subject Performance en_US
dc.subject Software en_US
dc.subject Storage en_US
dc.title A Recovery Conscious Framework for Fault Resilient Storage Systems en_US
dc.type Technical Report en_US


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