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Date: Mon, 17 Mar 2008 08:19:10 -0700
From: Tim Kientzle <kientzle@freebsd.org>
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To: Pawel Jakub Dawidek <pjd@freebsd.org>
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Cc: cvs-src@freebsd.org, Alfred Perlstein <alfred@freebsd.org>,
	src-committers@freebsd.org, Diomidis Spinellis <dds@freebsd.org>,
	cvs-all@freebsd.org
Subject: Re: cvs commit: src/tools/regression/bin/mv regress.sh
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>>>  FreeBSD src repository
>>>
>>>  Modified files:
>>>    tools/regression/bin/mv regress.sh 
>>>  Log:
>>>  Add more tests.  All rename(2)-based tests now succeed.
>>>  The performance of the cross-device equivalents is under investigation.
> 
> I was thinking about adding two options to cp(1) (-1 and -2) to give
> cp(1) a hint if the copy is done inside one disk or between separate
> disks.

Will anyone ever use such a flag?  I'm skeptical.

If there were a way to determine this programmatically,
it would be a big win.  You'd need to look at the first
file copied to determine if the destination was on the
same (physical) disk or not.

Tim