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Date:      Tue, 3 Jan 2012 19:35:48 -0600 (CST)
From:      Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
To:        Dan Carroll <fbsd@dannysplace.net>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ZFS With Gpart partitions
Message-ID:  <alpine.GSO.2.01.1201031934290.15666@freddy.simplesystems.org>
In-Reply-To: <4F039470.9010405@dannysplace.net>
References:  <4F003EB8.6080006@dannysplace.net> <CALfReyfvOCMpBdndf7UYydmGnUqt2cBYWdhYXaOANbQ_CFHoVA@mail.gmail.com> <4F02FC42.1040103@dannysplace.net> <4F0311F2.7050209@brockmann-consult.de> <4F0312DF.8050004@brockmann-consult.de> <20120103162428.GA18661@icarus.home.lan> <CALfReyc11ZriFPZmm15YwS5VeA1P4Epub1vyZM%2BfC8X2X0_mHw@mail.gmail.com> <4F039470.9010405@dannysplace.net>

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On Wed, 4 Jan 2012, Dan Carroll wrote:
>
> Actually that does make sense.   99% of my files on this volume (office data 
> / media server) will be larger than 4k anyway so I guess there is nothing to 
> lose by aligning to a 4k boundry *and* asking ZFS to use 4k block size.

Except that each file has at least two metadata blocks and these will 
increase to 4k in size.  If the typical file size was 8K, then this 
would represent almost 100% waste.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/



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