Lakshmi Narayanan Bairavasundaram
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About Me | News | Professional Activities | Publications | Ph.D. Research | Internships About MeI was a Ph.D. student in Computer Sciences at the University of Wisconsin-Madison from August 2002 to August 2008. My advisors were Prof. Andrea C. Arpaci-Dusseau and Prof. Remzi H. Arpaci-Dusseau. My dissertation is titled "Characteristics, Impact, and Tolerance of Partial Disk Failures."I work at a storage start-up called Datrium. Previously, I was a researcher in the Advanced Technology Group at NetApp. My research interests include operating systems, file systems, storage systems, and data management. News
Professional Activities
PublicationsWarming Up Storage-Level Caches with Bonfire Yiying Zhang, Gokul Soundararajan, Mark Storer, Lakshmi N. Bairavasundaram, Sethuraman Subbiah, Andrea Arpaci-Dusseau, Remzi Arpaci-Dusseau Proceedings of the 11th USENIX conference on File and Storage Technologies (FAST'13) San Jose, California. February 2013. Available as: PDF Responding Rapidly to Service Level Violations using Virtual Appliances Lakshmi N. Bairavasundaram, Gokul Soundararajan, Vipul Mathur, Kaladhar Voruganti, Kiran Srinivasan Operating Systems Review 46(3): 32-40 (2012) Available as: PDF An Empirical Study on Configuration Errors in Commercial and Open Source Systems Zuoning Yin, Xiao Ma, Jing Zheng, Yuanyuan Zhou, Lakshmi N. Bairavasundaram, Shankar Pasupathy Proceedings of the 23rd ACM Symposium on Operating Systems Principles (SOSP'11) Cascais, Portugal. October 2011. Available as: PDF How Do Fixes Become Bugs? A Comprehensive Characteristic Study on Incorrect Fixes in Commercial and Open Source Operating Systems Zuoning Yin, Ding Yuan, Yuanyuan Zhou, Shankar Pasupathy, Lakshmi Bairavasundaram Proceedings of the ACM SIGSOFT Symposium on the Foundations of Software Engineering (FSE'11) Szeged, Hungary. September 2011. Distinguished Paper Award! Available as: PDF Italian for Beginners: The Next Steps for SLO-Based Management Lakshmi N. Bairavasundaram, Gokul Soundararajan, Vipul Mathur, Kaladhar Voruganti, Steven Kleiman Proceedings of the 3rd USENIX Workshop on Hot Topics in Storage and File Systems (HotStorage'11) Portland, Oregon. June 2011. Available as: PDF Fido: Fast Inter-Virtual-Machine Communication for Enterprise Appliances Anton Burtsev, Kiran Srinivasan, Prashanth Radhakrishnan, Lakshmi N. Bairavasundaram, Kaladhar Voruganti, Garth Goodson Proceedings of the 2009 USENIX Annual Technical Conference (USENIX'09) San Diego, California. June 2009. Available as: HTML PDF Tolerating File-System Mistakes with EnvyFS Lakshmi N. Bairavasundaram, Swaminathan Sundararaman, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 2009 USENIX Annual Technical Conference (USENIX'09) San Diego, California. June 2009. Best Paper Award! Available as: Abstract PDF Postscript BibTex
Analyzing the Effects of Disk-Pointer Corruption Lakshmi N. Bairavasundaram, Meenali Rungta, Nitin Agrawal, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau, Michael M. Swift Proceedings of the International Conference on Dependable Systems and Networks (DSN'08) Anchorage, Alaska. June 2008. Available as: Abstract PDF Postscript BibTex An Analysis of Data Corruption in the Storage Stack Lakshmi N. Bairavasundaram, Garth R. Goodson, Bianca Schroeder, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 6th USENIX conference on File and Storage Technologies (FAST'08) San Jose, California. February 2008. Best Student Paper Award! Available as: Abstract PDF Postscript BibTex Parity Lost and Parity Regained Andrew Krioukov, Lakshmi N. Bairavasundaram, Garth R. Goodson, Kiran Srinivasan, Randy Thelen, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 6th USENIX conference on File and Storage Technologies (FAST'08) San Jose, California. February 2008. Available as: Abstract PDF Postscript BibTex An Analysis of Latent Sector Errors in Disk Drives Lakshmi N. Bairavasundaram, Garth R. Goodson, Shankar Pasupathy, Jiri Schindler. Proceedings of the International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS'07) San Diego, California. June 2007. Kenneth C. Sevcik Outstanding Student Paper Award! ACM SIGMETRICS Test of Time Award 2017! Available as: Abstract PDF Postscript BibTex Limiting Trust in the Storage Stack Lakshmi N. Bairavasundaram, Meenali Rungta, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 2nd International Workshop on Storage Security and Survivability (StorageSS'06) Alexandria, Virgina. October 2006. Available as: Abstract PDF Postscript BibTex Dependability Analysis of Virtual Memory Systems Lakshmi N. Bairavasundaram, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the International Conference on Dependable Systems and Networks (DSN'06) Philadelphia, Pennsylvania. June 2006. Available as: Abstract PDF Postscript BibTex Semantically-Smart Disk Systems: Past, Present, and Future Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau, Lakshmi N. Bairavasundaram, Timothy E. Denehy, Florentina I. Popovici, Vijayan Prabhakaran, Muthian Sivathanu Sigmetrics Performance Evaluation Review (PER) Volume 33, Number 4. March 2006. Available as: Abstract PDF Postscript BibTex Database Aware Semantically-smart Storage Muthian Sivathanu, Lakshmi N. Bairavasundaram, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 4th USENIX conference on File and Storage Technologies (FAST'05) San Francisco, California. December 2005. Available as: Abstract PDF Postscript BibTex IRON File Systems Vijayan Prabhakaran, Lakshmi N. Bairavasundaram, Nitin Agrawal, Haryadi S. Gunawi, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of 20th ACM Symposium on Operating Systems Principles (SOSP'05) Brighton, United Kingdom. October 2005. Available as: Abstract PDF Postscript BibTex Life or Death at Block Level Muthian Sivathanu, Lakshmi N. Bairavasundaram, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of 6th Symposium on Operating Systems Design and Implementation (OSDI'04) San Francisco, California. December 2004. Available as: Abstract PDF Postscript BibTex X-RAY: A Non-Invasive Exclusive Caching Mechanism for RAIDs Lakshmi N. Bairavasundaram, Muthian Sivathanu, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau Proceedings of the 31st Annual International Symposium on Computer Architecture (ISCA'04) Munich, Germany. June 2004. Available as: Abstract PDF Postscript BibTex Dynamic Path Profile Aided Recompilation in a JAVA Just-In-Time Compiler R. Vinodh Kumar, B. Lakshmi Narayanan, R. Govindarajan Proceedings of the International Conference on High Performance Computing (HiPC'02) Bangalore, India. December 2002. Available as: PDF Functional Unit Usage Based Thread Selection in a Simultaneous Multithreaded Processor Deepak Babu M.I, Lakshmi Narayanan B, Madhu Saravana Sibi G, Ranjani Parthasarathi Poster Session of the International Conference on High Performance Computing (HiPC'01) Hyderabad, India. December 2001. Available as: PDF Ph.D. ResearchDissertation: "Characteristics, Impact, and Tolerance of Partial Disk Failures" Much of the value people place in computers stems from the data stored in them. My dissertation focuses on failures related to loss or corruption of data. Disk drive failures are the primary causes of data loss. These failures are typically partial failures, where some disk sectors are unavailable due to a latent sector error or some disk blocks are silently corrupted. The goals of my dissertation are to (i) understand the characteristics of partial disk failures, (ii) analyze how these failures impact components of the storage stack, and (iii) develop solutions to tolerate such failures. Failure characteristics: I have analyzed the occurrence and characteristics of latent sector errors and data corruption in a population of 1.53 million disk drives [SIGMETRICS07, FAST08a]:
Other Research: My initial research experience was built on studying how different layers of a system interact and how "gray-box" techniques can be used in such layers to overcome the limitations of narrow interfaces. A specific application of such techniques has been in semantically-smart disk systems. These are disk systems that leverage basic knowledge of file system operation to provide significant improvements in performance, availability and security. I have primarily explored the performance angle. I have developed a cache mechanism for disk arrays that utilizes basic knowledge of file system data structures to provide an exclusive cache i.e. a cache that retains blocks that are not present in the file system cache [ISCA04]. I have also extended this technique to work effectively with database systems [FAST05]. Finally, I have worked on using block liveness information in a semantically-smart disk [OSDI04]. In addition to my research at Madison, I have been on research internships at IBM T. J. Watson Research Center, NY (June-Aug 2004), where I developed a distributed caching mechanism for storage systems, Intel Corporation, OR (May-Aug 2005), where I developed techniques for hypervisor-based fault injection, and NetApp, CA (Jun-Aug 2006, Jun-Aug 2007) where I analyzed data on storage system errors. InternshipsSummer Intern. Advanced Development Group, Network Appliance. Sunnyvale, CA. June - August, 2007. I analyzed the occurrence of silent data corruption in disk drives, identifying important characteristics that would be useful for corruption-proof system design. Summer Intern. Advanced Development Group, Network Appliance. Sunnyvale, CA. June - August, 2006. I analyzed data on latent sector errors (disk errors wherein a sector becomes inaccessible), examining the dependence on factors such as disk drive age and capacity, and identifying characteristics such as spatial and temporal locality. Summer Intern. Core Virtualization Research Group, Intel Corporation. Hillsboro, OR. May - August, 2005. I developed techniques for hypervisor-based fault injection and applied these techniques to study operating system behavior when memory and disk errors occur. Summer Intern. IBM T.J. Watson Research Center. Hawthorne, NY. May - August, 2004. I designed and implemented an extensible and scalable distributed cache architecture for an enterprise storage system. My scheme involved the use of remote memory (on machines over a high-speed LAN) for caching disk blocks. Summer Research Fellow. Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bangalore, India. May - June, 2001. I developed an instruction scheduler for a Java Just-in-Time compiler. The scheduler was built to utilize path profile information. |