In reply:
> Imagine: cp file file2, file and file2 reference the same exact blocks,
> but modified chunks of file2 would be given their own private blocks.
This is not a microsoft innovation, actually, I believe it was a VMS
innovation. It's called a generational filesystem. the original is
stored, and later generations of the file are stored as diffs.
> This probably won't fit into current filesystems, but is it a sane idea
> worth pursuing in a new filesystem? I performed an analysis on a
> non-production server and determined that about 66 megs of a typical
> FreeBSD install is duplicate files (and yes, I ignored hard links and
> symlinks and non-regular files).
it has it's advantages. and disavantages. one problem in VMS is
determining the system-wide policy on such things, such as how many
file generations will be kept.
this isn't exactly apples to apples, but it's close enough to be
discussed.
a VMS style filesystem would be interesting.
jim
--
All opinions expressed are mine, if you | "I will not be pushed, stamped,
think otherwise, then go jump into turbid | briefed, debriefed, indexed, or
radioactive waters and yell WAHOO !!! | numbered!" - #1, "The Prisoner"
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