Design and Implementation of a Predictive File Prefetching Algorithm
Proceedings of the General Track: 2002 USENIX Annual Technical Conference
X-RAY: A Non-Invasive Exclusive Caching Mechanism for RAIDs
Proceedings of the 31st annual international symposium on Computer architecture
Geiger: monitoring the buffer cache in a virtual machine environment
Proceedings of the 12th international conference on Architectural support for programming languages and operating systems
Virtual-Machine-based Intrusion Detection on File-aware Block Level Storage
SBAC-PAD '06 Proceedings of the 18th International Symposium on Computer Architecture and High Performance Computing
OSDI'04 Proceedings of the 6th conference on Symposium on Opearting Systems Design & Implementation - Volume 6
Opening black boxes: using semantic information to combat virtual machine image sprawl
Proceedings of the fourth ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
"Out-of-the-Box" monitoring of VM-based high-interaction honeypots
RAID'07 Proceedings of the 10th international conference on Recent advances in intrusion detection
Semantically-smart disk systems
FAST'03 Proceedings of the 2nd USENIX conference on File and storage technologies
Improving storage system availability with D-GRAID
FAST'04 Proceedings of the 3rd USENIX conference on File and storage technologies
Revisiting the storage stack in virtualized NAS environments
WIOV'11 Proceedings of the 3rd conference on I/O virtualization
Privacy-sensitive VM retrospection
HotCloud'11 Proceedings of the 3rd USENIX conference on Hot topics in cloud computing
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Storage consolidation due to server virtualization puts stringent new requirements on Storage Array (SA) performance. Virtualized workloads require new performance optimizations that cannot be totally addressed by merely using expensive hardware such as SSDs. This position paper presents Virtual Machine Disk Image (VMDI) introspection--a key technique for implementing a variety of virtualization-oriented I/O optimizations. VMDI introspection gives SAs an understanding of guest file system semantics, such as determining object types and classifying read and write operations. We explore possible approaches for VMDI introspection and then describe a set of VMDI-introspection-based optimizations. Our prototype implementation with enhanced meta-data caching and placement shows 11% to 20× performance improvement.