Date: Mon, 16 Mar 1998 05:59:33 -0800 (PST) From: "Michael V. Harding" <mvh@netcom.com> To: ast@marabu.ch Cc: current@FreeBSD.ORG, stable@FreeBSD.ORG Subject: Re: HEADS UP / disk slicing: a MAKEDEV deficiency for slices>0 ? Message-ID: <199803161359.FAA00815@netcom1.netcom.com> In-Reply-To: <199803152315.AAA25361@marabu.marabu.ch> (message from Adrian Steinmann on Mon, 16 Mar 98 00:15:25 %2B0100) References: <199803152315.AAA25361@marabu.marabu.ch>
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I'll concur on this one - with dual boot machines, FreeBSD is often on
the second disk or second partitionm - this is why we saw boot fail.
Not too hard to fixe once you know what you are doing, but it was
awkward because I couldn't even check the FAQ until I got the system
running again.
I don't know if this is because I have two disks, also, but when I did
an upgrade in place to 2.2.6 it ate the entire disk. I'm afraid to
use anything but CVSUP now. Luckily I did have the important stuff
backed up...
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From: Adrian Steinmann <ast@marabu.ch>
Date: Mon, 16 Mar 98 00:15:25 +0100
cc: stable@FreeBSD.ORG
X-Organization: Steinmann Consulting, Apollostrasse 21, 8032 Zurich
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I have been watching the escalation of this HEADS UP and must admit
that I've become more confused than I was before. So I will add some
more confusion myself ;-)
It seems that, for now, 'make world' in -stable sets -DROOTSLICE_HUNT
to maintain downward compatibility in the mount source files. Good.
It also appears, though, that /dev/MAKEDEV only makes the [a-h]
partitions for s0, so this might be why some people are having
problems booting with their "new /etc/fstab" (in fact, I believe
this would happen when their root partition is not on slice 0).
I've tracked this feature of MAKEDEV back to revision 1.76:
$ co -r1.76 -p MAKEDEV,v |grep s0h
MAKEDEV,v --> standard output
revision 1.76
for slicepartname in s0h s1 s2 s3 s4
$ co -r1.75 -p MAKEDEV,v |grep s0h
MAKEDEV,v --> standard output
revision 1.75
Where we read this comment:
revision 1.76
date: 1995/03/04 12:22:14; author: bde; state: Exp; lines: +56 -70
For sd, vn and wd:
Support sliced devices better. E.g.:
`sh MAKEDEV sd0' creates [r]sd0 and [r]sd0s[1-4] as well as [r]sd0[a-h]
(the extra devices created by default won't hurt apart from wasting inodes).
`sh MAKEDEV sd0s1[a-h]' creates [r]sd0s1[a-h] (any partition creates all).
`sh MAKEDEV sd0s5' creates [r]sd0s5.
Support unit numbers 0-31 (was 0-6).
Note, in particular, that '(cd /dev; ./MAKEDEV all)' will not make
the [a-h] partitions on any slices > 0.
Maybe it's time to change the line
for slicepartname in s0h s1 s2 s3 s4
to
for slicepartname in s0h s1h s2h s3h s4h
so that /dev/MAKEDEV makes the [a-h] /dev entries for all slices?
Adrian
_________________________________________________________________________
Dr. Adrian Steinmann Steinmann Consulting Apollostrasse 21 8032 Zurich
Tel +41 1 380 30 83 Fax +41 1 380 30 85 Mailto:ast@marabu.ch
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