Date: Thu, 13 Aug 2009 13:00:13 +0900 (JST) From: Kawaguti Ginga <ginga-freebsd@ginganet.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/137713: installer partition editor generates insane label Message-ID: <20090813040013.B078B5D47@athena.ginganet.org> Resent-Message-ID: <200908130420.n7D4K2Av023379@freefall.freebsd.org>
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>Number: 137713
>Category: bin
>Synopsis: installer partition editor generates insane label
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Aug 13 04:20:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Kawaguti Ginga
>Release: FreeBSD 8-BETA2
>Organization:
ginganet.org
>Environment:
System: FreeBSD 8.0-BETA2 FreeBSD 8.0-BETA2 amd64
Seems to happen not only on 8-current but 7-stable also.
(I haven't checked 6-stable)
>Description:
FreeBSD installer (invoked from bootable DVD)'s disklabel editor
creates odd disk label.
One example disklabel created by installer for 18GB HDD is shown below.
| FreeBSD# # fdisk -s da0
| /dev/da0: 2231 cyl 255 hd 63 sec
| Part Start Size Type Flags
| 1: 63 35840952 0xa5 0x80
| FreeBSD# bsdlabel da0s1
| # /dev/da0s1:
| 8 partitions:
| # size offset fstype [fsize bsize bps/cpg]
| a: 2097152 63 4.2BSD 0 0 0
| b: 2097152 2097215 swap
| c: 35840952 63 unused 0 0 # "raw" part, don't edit
| d: 4194304 4194367 4.2BSD 0 0 0
| e: 27452344 8388671 4.2BSD 0 0 0
| partition c: partition extends past end of unit
| bsdlabel: partition c doesn't start at 0!
| bsdlabel: An incorrect partition c may cause problems for standard system utilities
| partition e: partition extends past end of unit
* fdisk: no problem.
* bsdlabel:
+ c partition has offset:63, which SHOULD be 0.
+ If using offset:63, *SIZE* of c-partition
should be 63 less than fdisk-partition(slice) size.
+ last partition(in this example, "e" partition) is *OVERSIZED*.
size:27452344 + offset:8388671 = 35841015
=> size of this partition penetrates the slice boundary.
>How-To-Repeat:
For the previous example,
I've created "maximum slice size in fdisk partition".
Then created:
1. "1g" partition,
2. "1g" swap
3. "2g" partition
4. rest of the size(just entered the value shown in disklabel-editor's prompt)
(only 1 FreeBSD slice for HDD, no DOS/Windows slice)
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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