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Date:      Tue, 05 May 2009 06:39:03 +1000
From:      Andrew Snow <andrew@modulus.org>
To:        Antonio Tommasi <antonio.tommasi@unile.it>,  "freebsd-net >> FreeBSD Net" <freebsd-net@freebsd.org>
Subject:   Re: Filesystem and bigger files
Message-ID:  <49FF5267.6090005@modulus.org>
In-Reply-To: <49FEC893.8030305@unile.it>
References:  <49FA2E3F.9050108@entel.upc.edu>	<3a142e750905010655i5e56282eu240e13f2a03dfb02@mail.gmail.com>	<49FB55A3.605@entel.upc.edu>	<3a142e750905011716g39ea55f0kd081bfdd55709b37@mail.gmail.com>	<49FBF9B5.40800@entel.upc.edu>	<3a142e750905020617y40f62463ma91b46a015b2b2ab@mail.gmail.com>	<49FD61DD.7070903@entel.upc.edu>	<3a142e750905030535v4cfe0103r1d8a17e828f6da9b@mail.gmail.com>	<57348.147.83.40.234.1241416909.squirrel@webmail.entel.upc.edu> <49FEC893.8030305@unile.it>

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Antonio Tommasi wrote:
> Filesystem       Size    Used   Avail    Capacity  Mounted on
> /dev/aacd0s1a  64G    15G     44G         26%    /
> In a directory (spamassassin) i've one file (auto-whitelist) with 
> dimension 4.0 TB and one file (bayes_learn) with dimension 1.0TB
> 
> How is it possible? How this file are managed?


Spamassassin uses sparse files.

http://en.wikipedia.org/wiki/Sparse_file

Try running "du" on the files instead of "ls -l".


- Andrew



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