NFS V4 Share Reservation & Delegation

• Share Reservation

  • file level
  • is not a lock
  • requested by client on OPEN
  • denies OPEN to other clients (read and/or write)
  • lasts while file opened
  • revocable (callbacks)

• Delegation

  • may be granted by server on OPEN
  • can not be requested
  • client has all responsibility for file
    • locks may be served locally, ...
  • revocable (callbacks)

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