Date: Fri, 04 Mar 2011 22:12:49 +0100 From: Attila Nagy <bra@fsn.hu> To: Adam Vande More <amvandemore@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: Punching holes into (sparse) files - porting Solaris fcntl(F_FREESP) to FreeBSD? Message-ID: <4D7155D1.6000600@fsn.hu> In-Reply-To: <AANLkTimcef33uWx5foSMC9cXEXLS_5s6O=tO8gvG9giW@mail.gmail.com> References: <4D710154.90409@fsn.hu> <AANLkTimcef33uWx5foSMC9cXEXLS_5s6O=tO8gvG9giW@mail.gmail.com>
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On 03/04/2011 05:39 PM, Adam Vande More wrote: > > > 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 Thanks, but I don't want to rewrite the file. I thought that this is obvious from the other part of the e-mail, sorry. So I would like to make existing, non-sparse regions sparse, without rewriting the file. This is what F_FREESP is for.
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