Checkpoint and Migration of UNIX Processes in the Condor Distributed Processing System

Michael Litzkow, Todd Tannenbaum, Jim Basney, and Miron Livny

Computer Sciences Department University of Wisconsin-Madison {mike,tannenba,jbasney,miron}@cs.wisc.edu

• 1 Introduction
• 2 Checkpoint and Migration of a UNIX Process
• 3 Components of a Process
  • 3.1 Text and Data Areas
  • 3.2 Stack
    • 3.2.1 Manipulating the Stack
  • 3.3 Shared Libraries
    • 3.3.1 Checkpointing Mapped Segments
    • 3.3.2 Restoring Mapped Segments
  • 3.4 Files
    • 3.4.1 Augmenting System Calls
  • 3.5 Signals
  • 3.6 Processor State
• 4 Summary of Checkpoint and Restart
  • 4.1 Remote File Access
  • 4.2 Limitations
• 5 Conclusion
• About this document ...