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Date:      Mon, 3 Sep 2007 09:54:41 +0400 (MSD)
From:      Dmitry Morozovsky <marck@rinet.ru>
To:        Ivan Voras <ivoras@freebsd.org>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: New option for newfs(3) to make life with GEOM easier
Message-ID:  <20070903095344.P17354@woozle.rinet.ru>
In-Reply-To: <fbg2ei$2ab$1@sea.gmane.org>
References:  <20070901074803.GM85633@comp.chem.msu.su> <fbd5e6$aia$1@sea.gmane.org> <20070902233930.O1113@woozle.rinet.ru> <fbg2ei$2ab$1@sea.gmane.org>

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On Mon, 3 Sep 2007, Ivan Voras wrote:

IV> > IV> Why not go a bit further and reserve 1 sector by default? I mean: keep
IV> > IV> the option, but if the GEOM people agree that only the last sector is in
IV> > IV> question here (and I think all current GEOM classes behave this way),
IV> > IV> reserve the 1 sector by default. Nobody will notice but some foot
IV> > IV> shooting will be avoided.
IV> 
IV> > There are possibilities that you can decide to use more than one GEOM layers 
IV> > under your file system.
IV> 
IV> Of course, but I don't think this is significant in practice: except
IV> gmirror, what else would you like to put on a existing file system?

My example which leads me to write the patch: gcache under graid3.

Since then, I usually reserve 8 sectors at the end of each file system - just 
in case.

Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:				     marck@FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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