From owner-freebsd-current Thu Mar 16 08:27:47 1995 Return-Path: current-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id IAA12328 for current-outgoing; Thu, 16 Mar 1995 08:27:47 -0800 Received: from cs.weber.edu (cs.weber.edu [137.190.16.16]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id IAA12322 for ; Thu, 16 Mar 1995 08:27:45 -0800 Received: by cs.weber.edu (4.1/SMI-4.1.1) id AA23319; Thu, 16 Mar 95 09:21:24 MST From: terry@cs.weber.edu (Terry Lambert) Message-Id: <9503161621.AA23319@cs.weber.edu> Subject: Re: newfs: sectors per cylinder (4096) disagrees with disk label (36) To: phk@ref.tfs.com (Poul-Henning Kamp) Date: Thu, 16 Mar 95 9:21:23 MST Cc: rgrimes@gndrsh.aac.dev.com, current@FreeBSD.org In-Reply-To: <199503160333.TAA09321@ref.tfs.com> from "Poul-Henning Kamp" at Mar 15, 95 07:33:13 pm X-Mailer: ELM [version 2.4dev PL52] Sender: current-owner@FreeBSD.org Precedence: bulk > > Basically, there need to be devices that access the raw disk (machine > > specific) which are used to access the DOS partitions from user space > > and to mount (using a clone) do partitions without a device being > > dedicated to the DOS partition. > > No. The slice code will do this the right way. On device in /dev > for each logical area of the disk. I think the number of devices that would be needed to describe all extended partitions on a fully segregated drive would make this impossible. Consider: # of SCSI controllers * # of SCSI devices per bus * # of SCSI LUNs * # of partitions (regular and extended) * # of BSD slices per partition At the very least, this would require a move to 32 bit minor numbers, even if each controller got it's own major number. Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.