Date: Wed, 15 Mar 95 19:31:42 MST From: terry@cs.weber.edu (Terry Lambert) To: phk@ref.tfs.com (Poul-Henning Kamp) Cc: rgrimes@gndrsh.aac.dev.com, current@FreeBSD.org Subject: Re: newfs: sectors per cylinder (4096) disagrees with disk label (36) Message-ID: <9503160231.AA16164@cs.weber.edu> In-Reply-To: <199503160023.QAA08809@ref.tfs.com> from "Poul-Henning Kamp" at Mar 15, 95 04:23:59 pm
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> >From these three I determine that there is only a weak, if any, relation > between the geometry(disklabel) and geometry(filesystem). > > I don't see any point in having the device-drivers even know about geometry, > considering that LFS for instance doesn't care a hoot, and I will strongly > work to get the ties already in place broken. 1. Physical volume spanning. Like AIX, it is useful to have a logical partition on which you actually build your file system capable of spanning one or more phical partitions on one or more physical drives. 2. Ability to mount partitions using different physical layout strategies between machines running the same OS. Ie: a DEC Alpha Syquest disk on a 386 box. To name two. 8-). Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.
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