A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Abstract
Author(s) : M. Benjamin
Filename : draft-mbenjamin-afs-file-locking-05.txt
Pages : 27
Date : 2010-05-13
The AFS-3 protocol supports file locks, but only on whole files,
only in advisory mode. Efficient support for byte-range file
locking, together with the stronger semantics with which they are
associated, are required to improve the suitability of AFS as a
LAN file-sharing protocol for both Unix and Windows clients.
Applications on the Windows platform, in particular (e.g.,
Microsoft Office), actually require byte-range locking to
function correctly. Emulation in the client has alleviated most
serious problems, albeit, with reduced semantics. We propose
protocol enhancements facilitating server-coordinated byte-range
locks, atomic lock up/down-grade support, improved semantics for
files under byte-range lock control, protocol support for
wait-on-lock with fairness, and mandatory lock enforcement for
clients on request. The delegation proposal, included within this
document in previous drafts, has been split out into a separate
proposal, based on feedback from reviewers.
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