Date: Sat, 30 Jul 2005 10:08:07 -0700 From: Glenn Dawson <glenn@antimatter.net> To: "J.D. Bronson" <jbronson@wixb.com>, freebsd-questions@freebsd.org Subject: Re: bsdlabel question.. Message-ID: <6.1.0.6.2.20050730100508.13b4b060@cobalt.antimatter.net> In-Reply-To: <6.2.5.1.2.20050730073623.00c12950@wixb.com> References: <6.2.5.1.2.20050730073623.00c12950@wixb.com>
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At 05:59 AM 7/30/2005, J.D. Bronson wrote:
># /dev/da0s1:
>type: SCSI
>disk: da0s1
>label:
>flags:
>bytes/sector: 512
>sectors/track: 63
>tracks/cylinder: 255
>sectors/cylinder: 16065
>cylinders: 2234
>sectors/unit: 35889147
>rpm: 15000
>interleave: 1
>trackskew: 0
>cylinderskew: 0
>headswitch: 0 # milliseconds
>track-to-track seek: 0 # milliseconds
>drivedata: 0
>
>8 partitions:
># size offset fstype [fsize bsize bps/cpg]
> a: 1048576 0 4.2BSD 2048 16384 8
> b: 2097152 1048576 4.2BSD 2048 16384 28552
> c: 35889147 0 unused 0 0 # "raw" part,
> don't edit
> d: 16777216 3145728 4.2BSD 2048 16384 28552
> e: 8388608 19922944 4.2BSD 2048 16384 28552
> f: 2097152 28311552 4.2BSD 2048 16384 28552
> g: 2097152 30408704 4.2BSD 2048 16384 28552
> h: 3383291 32505856 4.2BSD 2048 16384 28552
>
>
>...This is on a FreeBSD 5.4 machine with a Fuji 15K 18GB scsi drive.
>
>Does this disklabel look right? (28553 bps/cpg?)
I just checked the source for newfs, and my previous reply was
correct. Here's the relevant code that put's that number in the label:
if (pp != NULL) {
pp->p_fstype = FS_BSDFFS;
pp->p_fsize = sblock.fs_fsize;
pp->p_frag = sblock.fs_frag;
pp->p_cpg = sblock.fs_fpg;
}
The last line is the one that inserts that number. sblock.fs_fpg is the
number of frags per cylinder grounp.
-Glenn
>thanks!
>
>
>
>
>--
>J.D. Bronson
>Information Services
>Aurora Health Care - Milwaukee, Wisconsin
>Office: 414.978.8282 // Fax: 414.314.8787
>
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