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  1. .HTML "The Plan 9 File Server
  2. .FP lucidasans
  3. .TL
  4. The Plan 9 File Server
  5. .AU
  6. Ken Thompson
  7. ken@plan9.bell-labs.com
  8. .AB
  9. This paper describes the structure
  10. and the operation of Plan 9 file servers.
  11. The specifics apply to
  12. our main Plan 9 file server
  13. Emelie,
  14. but
  15. the code is also the basis for
  16. the user level file server
  17. .CW kfs .
  18. .AE
  19. .SH
  20. Introduction
  21. .PP
  22. The Plan 9 file server
  23. Emelie
  24. is the oldest piece of system software
  25. still in use on Plan 9.
  26. It evolved from a user-level program that served
  27. serial lines on a Sequent multi-processor.
  28. The current implementation is neither clean nor
  29. portable,
  30. but it has slowly come to terms with
  31. its particular set of cranky computers
  32. and devices.