Date: Mon, 04 Jun 2012 13:57:59 -0600 From: Gary Aitken <freebsd@dreamchaser.org> To: Polytropon <freebsd@edvax.de> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: bsdlabel geometry params Message-ID: <4FCD1347.9060209@dreamchaser.org> In-Reply-To: <20120604164244.81e24528.freebsd@edvax.de> References: <4FCCBDF4.1030008@dreamchaser.org> <20120604164244.81e24528.freebsd@edvax.de>
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On 06/04/12 08:42, Polytropon wrote: >> In step #4, bsdlabel gives you a label with zeros for fsize, bsize, bps/cpg >> Is it necessary to fill these in, or is there a way to get some >> reasonable defaults? >> "newfs -N" will give you numbers for bsize and fsize, but what about bps/cpg? >> >> What does the install process do for this step? I don't remember >> ever having to deal with it. > > Maybe it's bit overcomplicated. I assume as you're creating > /dev/da1s1e here (non-boot volume on 1st slice, which would > be /dev/da1s1a instead), so basically you're creating a kind > of "data disk" (one full disk, not bootable). Actually, no. That was a cut and paste from the handbook, IIRC. The actual disk will have a backup system and another partition for cron dump files. I don't quite understand the relationship between the params in the label and the filesystem. My impression was that the params in the label for a filesystem were mandatory, but it appears not all of them are. It seems like there should be a cmd to run to get reasonable starting point numbers. If you don't have anything to go on, you could easily stick something in there that's worse than what a default would be.
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