Date: Fri, 29 Sep 2017 08:08:23 +0100 From: Bob Eager <rde@tavi.co.uk> To: freebsd-fs@freebsd.org Subject: Re: How to create holes in files ? Message-ID: <20170929080823.175d6abc@raksha.tavi.co.uk> In-Reply-To: <454261D6-0061-4DB9-8184-BDD7061870FB@gmail.com> References: <12ed413d-00d1-4182-bdd5-0e5230d46f01@email.android.com> <4D304428-E4AF-45D4-AB2E-D4B73A7FEE87@gmail.com> <1506664468.7204.37.camel@inparadise.se> <454261D6-0061-4DB9-8184-BDD7061870FB@gmail.com>
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On Fri, 29 Sep 2017 08:26:13 +0200 Ben RUBSON <ben.rubson@gmail.com> wrote: > Unfortunately here storage blocks will be set/written to 0, > they will not be freed/recovered, a file hole will not be created. You need to add: conv=sparse to the dd command to turn zero blocks into unallocated blocks.
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