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Auto-diagnosis of field problems in an appliance operating system

Gaurav Banga
Network Appliance Inc.,
495 E. Java Drive, Sunnyvale, CA 94089
gaurav@netapp.com

• Abstract
• Introduction
• The nature of field problems with appliance systems
  • Misconfiguration
  • Capacity problems
  • Hardware and software faults
  • Why are field problems hard to debug?
• Problem auto-diagnosis methods
  • Continuous monitoring
  • Protocol augmentation
  • Cross-layer analysis
  • Automatic configuration change tracking
  • Extensibility issues
• Implementation of the NetApp Auto-diagnosis System
  • Core implementation
  • Extensibility
  • Implementation in other operating systems
• Performance and experience
• Related work
  • Ad-hoc monitoring of UNIX and UNIX-like systems
  • SNMP
  • Problem diagnosis systems from the mainframe and telecommunications world
• Summary and future work
• Acknowledgements
• Bibliography
• About this document ...