Date: Sat, 02 Jan 2010 09:42:34 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net> Cc: Alexander Motin <mav@freebsd.org>, Miroslav Lachman <000.fbsd@quip.cz>, Thomas Backman <serenity@exscape.org>, freebsd-current@freebsd.org, freebsd-arch@freebsd.org, Pieter de Goeje <pieter@degoeje.nl> Subject: Re: File system blocks alignment Message-ID: <67020.1262425354@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 02 Jan 2010 06:08:44 %2B0100." <20100102050843.GI3508@acme.spoerlein.net>
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In message <20100102050843.GI3508@acme.spoerlein.net>, Ulrich =?utf-8?B?U3DDtnJ sZWlu?= writes: >Sysinstall, fdisk, gpart >and bsdlabel should all display some fat warning if partition/label >alignment is not, say at 256kB (a common stripe size, right?) You overlook that MBR/Fdisk requires bootable slices to start at a "track". That means that the propper slice-alignmen typically will be 8*63=504 sectors. Unless you want to explore how many BIOS'es still are stupid about this... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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