cvs commit: src/tools/regression/bin/mv

Pawel Jakub Dawidek pjd at
Wed May 28 10:07:39 UTC 2008

On Mon, Mar 17, 2008 at 08:19:10AM -0700, Tim Kientzle wrote:
> >>> FreeBSD src repository
> >>>
> >>> Modified files:
> >>>   tools/regression/bin/mv 
> >>> 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.

I would... sometimes:) That's probably why I never did it.

> 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.

This is how I started to think about that, but this is not possible.
Moreover you may still want to use -2 option even if this looks like one
physical disk, but it represents a RAID5 array.

Pawel Jakub Dawidek             
pjd at                 
FreeBSD committer                         Am I Evil? Yes, I Am!
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