On Sun, 1 Feb 2009 08:59:02 -0400 (AST)
Andrew Hamilton-Wright <andre...@ieee.org> wrote:

> Hi All;
> I regularly use dump(8) with snapshots to back up my server.
> While this seems to have been working perfectly well so far,
> upon (re)reading the man page for dump(8), I have noticed a
> somewhat scary pair of lines in the paragraph describing
> the option for -C <cachesize> (emphasis with stars mine):
>       [Use of this option] will greatly improve performance
>       at the cost of ***dump possibly not noticing changes in
>       the file system*** between passes.
>       ***It is recommended that you always use this option when
>       dumping a snapshot.***

When you dump a snapshot there are, by definition, no changes between
passes. So it's saying that in that case there in no reason not to
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