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Date: Fri, 4 Mar 2011 10:39:32 -0600
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From: Adam Vande More <amvandemore@gmail.com>
To: Attila Nagy <bra@fsn.hu>
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Cc: freebsd-fs@freebsd.org
Subject: Re: Punching holes into (sparse) files - porting Solaris
 fcntl(F_FREESP) to FreeBSD?
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>
>
> Is it possible to make regions of files, with already written data sparse?
> (I'm interested to do this on ZFS)
>
>

Well thereis sysutils/phantom

HTH

-- 
Adam Vande More