Date: Sun, 24 Jun 2001 18:00:13 -0700 (PDT) From: Phil Homewood <pdh@lineo.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/28164: [PATCH] crashdump can trash disklabel/other partitions Message-ID: <200106250100.f5P10D532167@freefall.freebsd.org>
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The following reply was made to PR kern/28164; it has been noted by GNATS.
From: Phil Homewood <pdh@lineo.com>
To: Bruce Evans <bde@zeta.org.au>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/28164: [PATCH] crashdump can trash disklabel/other partitions
Date: Mon, 25 Jun 2001 10:58:16 +1000
Phil Homewood wrote:
> Second attachment is a disklabel of the disk containing the dumpdev.
> The critical size for da1s2b is 524298 blocks; at that size the dump
> works, but at 524297 blocks it trashes the label.
I forgot to mention: da1s2 is, of course, the second slice on the
disk, if that makes any difference:
******* Working on device /dev/da1 *******
parameters extracted from in-core disklabel are:
cylinders=17501 heads=64 sectors/track=32 (2048 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=17501 heads=64 sectors/track=32 (2048 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 32, size 524256 (255 Meg), flag 0
beg: cyl 0/ sector 1/ head 1;
end: cyl 255/ sector 32/ head 63
The data for partition 2 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 524288, size 35317760 (17245 Meg), flag 0
beg: cyl 256/ sector 1/ head 0;
end: cyl 1023/ sector 32/ head 63
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
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