Date: Sat, 23 Jun 2007 15:55:49 +0200 From: Ferruccio Zamuner <nonsolosoft@diff.org> To: freebsd-geom@freebsd.org Cc: nonsolosoft@diff.org Subject: gmirror and offset Message-ID: <467D2665.4030903@diff.org>
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/dev/ad4 has running FreeBSD 6.2-RELEASE from where:
r1# dd if=/dev/zero of=/dev/ad6 bs=512 count=79
79+0 records in
79+0 records out
40448 bytes transferred in 0.012255 secs (3300543 bytes/sec)
r1# /usr/sbin/sysinstall
to create ad6s1, ad6s2, ad6s3 and made ad6s1 "active"
r1# fdisk /dev/ad6
******* Working on device /dev/ad6 *******
parameters extracted from in-core disklabel are:
cylinders=232581 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=232581 heads=16 sectors/track=63 (1008 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 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 167766732 (81917 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 167766795, size 2104515 (1027 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 169871310, size 64565235 (31525 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 254/ sector 63
The data for partition 4 is:
<UNUSED>
r1# bsdlabel ad6s1
# /dev/ad6s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 167766732 0 unused 0 0 # "raw" part, don't edit
I want to create a mirror on ad6s1:
r1# gmirror label -h -v -b split -s 4096 gm0 ad6s1
Metadata value stored on ad6s1.
Done.
r1# gmirror load
r1# bsdlabel /dev/mirror/gm0
# /dev/mirror/gm0:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 167766732 63 unused 0 0 # "raw" part, don't edit
partition c: partition extends past end of unit
bsdlabel: partition c doesn't start at 0!
bsdlabel: partition c doesn't cover the whole unit!
bsdlabel: An incorrect partition c may cause problems for standard system utilities
What have I done wrong?
I've tried to edit bsdlabel:
r1# bsdlabel -e /dev/mirror/gm0
and when I'm in the editor I find:
-----
# /dev/mirror/gm0:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 234441632 16 unused 0 0
c: 167766732 63 unused 0 0 # "raw" part, don't edit
-----
Then I modify it to:
-----
# /dev/mirror/gm0:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 2097152 0 4.2BSD 0 0 0
c: 167766732 0 unused 0 0 # "raw" part, don't edit
e: 12582912 2097152 4.2BSD 0 0 0
f: 20971520 14680064 4.2BSD 0 0 0
g: 14680064 35651584 4.2BSD 0 0 0
h: 117435084 50331648 4.2BSD 0 0 0
-----
BUT bsdlabel writes:
-----
partition c: partition extends past end of unit
bsdlabel: partition c doesn't cover the whole unit!
bsdlabel: An incorrect partition c may cause problems for standard system utilities
partition h: partition extends past end of unit
re-edit the label? [y]:
-----
How can I fix it?
Bye, \fer
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