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Date:      Tue, 01 Aug 2006 12:07:45 +0200
From:      Ivan Voras <ivoras@fer.hr>
To:        freebsd-hackers@freebsd.org
Subject:   Re: [PATCH] adding two new options to 'cp'
Message-ID:  <ean95a$e1u$1@sea.gmane.org>
In-Reply-To: <20060801072611.GA717@turion.vk2pj.dyndns.org>
References:  <200607271150.k6RBoM9p031745@lurza.secnetix.de>	<44C8FB65.9020102@FreeBSD.org> <44CE03D2.2050803@centtech.com>	<17614.4005.407223.621637@bhuda.mired.org>	<44CE199C.2020500@centtech.com>	<17614.8289.134373.387558@bhuda.mired.org>	<96b30c400607310847s1d2f845eo212b234d03f51e9a@mail.gmail.com>	<17614.10982.499561.139268@bhuda.mired.org>	<ealpn1$lan$1@sea.gmane.org> <20060801072611.GA717@turion.vk2pj.dyndns.org>

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Peter Jeremy wrote:

> Note that it isn's possible to accurately distinguish between a block
> of NULs and a hole in the file through the filesystem.  The only way
> to accurately copy a sparse file is with dump/restore.

Hence the need for an explicit switch.

> This is true in the desktop and server market but is not true in the
> embedded market and only marginally true for laptops.

I don't know about embedded markets (do they need cp, or it's simply 
kernel+dedicated application?) but I've recently bought a 60GB laptop 
drive for ~~ $120 (converted back from my currency, may be cheaper in 
other parts of the world) - that's $2/GB.




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