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On Mon, Dec 13, 2004 at 02:45:51PM +0100, Florian Stoehr wrote:
> Hi,
>=20
> just wondering what the cpg/sgs means in disklabel?
>=20
> I split a 6 GB slice into two slices with disklabel -e and then
>=20
> newfs -b 8192 -f 1024 /dev/rsd0a (and 0f)
>=20
> the cpg/sgs changed from "29" to "46xxx".

=46rom "man 5 disklabel":
	(which describes the disk label data structure, as opposed to=20
	the "man 8 disklabel", which describes the disklabel command)

    union {
	u_int16_t cpg;  /* UFS: FS cylinders per group */
	_int16_t sgs;  /* LFS: FS segment shift */
    } __partition_u1;
    #define p_cpg   __partition_u1.cpg
    #define p_sgs   __partition_u1.sgs

Further information of the cpg parameter can be found in man newfs, of the
sgs parameter in man newfs_lfs.=20

newfs consults thedisk label to find out what values to use, if you don't=
=20
give it explicit values, then writes the used values back to the label.

Regards,
	-is

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