NetBSD Problem Report #29211
From www@netbsd.org Thu Feb 3 09:32:26 2005
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Date: Thu, 3 Feb 2005 09:32:26 +0000 (UTC)
From: spam@pianocast.net
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To: gnats-bugs@netbsd.org
Subject: Old partition name limits on kernel "config" directive
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>Number: 29211
>Category: kern
>Synopsis: Old partition name limits on kernel "config" directive
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Feb 03 09:33:00 +0000 2005
>Last-Modified: Thu Feb 03 11:09:01 +0000 2005
>Originator: Dave B
>Release: 2.0
>Organization:
>Environment:
NetBSD xxxxxx 2.0_STABLE NetBSD 2.0_STABLE (XXXXXX) #0: Tue Jan 25 12:51:25 EST 2005 netbsd@xxxxxx:/usr/src/sys/arch/i386/compile/XXXXXX i386
>Description:
Under a recent i386 netbsd-2 checkout (and maybe under earlier RELs,
although I happened to notice it under 2.0) the name limit on
partitions in the
config <exec_name> root on <rootdev> [stuff]
directive of kernel config files doesn't appear to support the updated
16 partition-per-drive limit. In other words, the statement
config netbsd root on sd0o
results in an error ("invalid root device name `sd0o'"), whereas if
one sets up sd0h with geometry identical to that of sd0o, this one,
config netbsd root on sd0h
will succeed. I'm guessing that it's because h is in the first 8
partitions and o is not?
>How-To-Repeat:
Try to make a kernel with a root fs hard-coded to a partition with a letter above "h", e.g.:
config netbsd root on wd0i
>Fix:
re-assign partitions in your disklabel so a lower-lettered partition maps to where your root fs is
>Audit-Trail:
From: Quentin Garnier <cube@cubidou.net>
To: gnats-bugs@netbsd.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
netbsd-bugs@netbsd.org
Subject: Re: kern/29211: Old partition name limits on kernel "config" directive
Date: Thu, 3 Feb 2005 12:08:07 +0100
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On Thu, Feb 03, 2005 at 09:33:00AM +0000, spam@pianocast.net wrote:
> >Number: 29211
> >Category: kern
> >Synopsis: Old partition name limits on kernel "config" directive
[...]
> >Description:
> Under a recent i386 netbsd-2 checkout (and maybe under earlier RELs,
> although I happened to notice it under 2.0) the name limit on
> partitions in the
>=20
> config <exec_name> root on <rootdev> [stuff]
>=20
> directive of kernel config files doesn't appear to support the updated
> 16 partition-per-drive limit. In other words, the statement
>=20
> config netbsd root on sd0o
>=20
> results in an error ("invalid root device name `sd0o'"), whereas if
> one sets up sd0h with geometry identical to that of sd0o, this one,
>=20
> config netbsd root on sd0h
>=20
> will succeed. I'm guessing that it's because h is in the first 8
> partitions and o is not?
This is because config(8) doesn't know about the kludgy way we assign
minors to partitions on i386.
A workaround would be to do
config netbsd root on major 4 minor 524294
Right now I don't see a clean way to correct that issue. Introducing
MD code in config(8) would be gross.
--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"When I find the controls, I'll go where I like, I'll know where I want
to be, but maybe for now I'll stay right here on a silent sea."
KT Tunstall, Silent Sea, Eye to the Telescope, 2004.
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