Date: Tue, 3 Jan 2006 15:30:08 -0800 From: Brent Hostetler <brenthostetler@gmail.com> To: freebsd-geom@freebsd.org Subject: Problems setting up gmirror of live system Message-ID: <aadbc3580601031530i2458cca7r622b55a6b1d6036@mail.gmail.com>
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######
Hello,
I am rebuilding my home server which is used to host files via Samba to wi=
n XP
clients throughout my house. The server is central storage for user files, =
mp3,
video's, etc. The current machine is running FreeBSD 5.4 with gvinum to gl=
ue
together 4 disks to one large disk.
I have ran out of space and decided to upgrade to FreeBSD 6.0, add
some more disks
and add some mirroring and get away from gvinum since documentation is lack=
ing.
Disks to use:
(2) 200 gig SATA ( same drives )
(2) 160 gig PATA ( different drives )
(2) 120 gig PATA ( same drives )
(2) 120 gig PATA ( same drives )
Idea would be to mirror the pairs and then concat or stripe the
mirrors into a large
partition to mount to /usr/home. I believe I can stack the Geom
classes correct so
this should be possible?
A small portion of the first mirror would be used for the o/s partions
and would be
mirrored as well.
I decided to start with a fresh install on the pair of 160 gig drives
and try to get
the mirroring going first.
I believe something went wrong in step 2.2. The output of 2.7 and 2.8
should be the
same, correct? I'm not sure where I messed up.. Any help appreciated.
Also if I am
going about this the wrong way suggestions appreciated.
Thanks.
Brent H.
#######
1.0 Install fresh system: Freebsd 6.0
1.1 files# uname -a
FreeBSD files.hostetler.ws 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu
Nov 3 09:36:13
UTC 2005 root@x64.samsco.home:/usr/obj/usr/src/sys/GENERIC i386
1.2 files# dmesg | grep ad\[0-9\]
ad4: 152627MB <WDC WD1600JB-00GVA0 08.02D08> at ata2-master UDMA100
ad6: 152627MB <Seagate ST3169923A 8.01> at ata3-master UDMA100
Trying to mount root from ufs:/dev/ad4s1a
1.3 files# fdisk -s /dev/ad4
/dev/ad4: 310101 cyl 16 hd 63 sec
Part Start Size Type Flags
1: 63 312576642 0xa5 0x80
1.4 files# bsdlabel ad4s1
# /dev/ad4s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 1048576 0 4.2BSD 2048 16384 8
b: 3096576 1048576 swap
c: 312576642 0 unused 0 0 # "raw"
part, don't edit
d: 10485760 4145152 4.2BSD 2048 16384 28552
e: 4194304 14630912 4.2BSD 2048 16384 28552
f: 83886080 18825216 4.2BSD 2048 16384 28552
g: 209865346 102711296 4.2BSD 2048 16384 28552
1.5 files# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/ad4s1a 496M 55M 401M 12% /
/dev/ad4s1d 4.8G 12K 4.5G 0% /tmp
/dev/ad4s1f 39G 1.1G 35G 3% /usr
/dev/ad5s1g 97G 22K 89G 0% /usr/home
/dev/ad4s1e 1.9G 1.9M 1.8G 0% /var
2.0 Follow steps at: http://people.freebsd.org/~rse/mirror
2.1 files# dd if=3D/dev/zero of=3D/dev/ad6 bs=3D512 count=3D79
79+0 records in
79+0 records out
40448 bytes transferred in 0.016785 secs (2409750 bytes/sec)
2.2 files# fdisk -v -B -I /dev/ad6
******* Working on device /dev/ad6 *******
fdisk: invalid fdisk partition table found
parameters extracted from in-core disklabel are:
cylinders=3D310101 heads=3D16 sectors/track=3D63 (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=3D310101 heads=3D16 sectors/track=3D63 (1008 blks/cyl)
Information from DOS bootblock is:
1: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 312581745 (152627 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 852/ head 15/ sector 63
2: <UNUSED>
3: <UNUSED>
4: <UNUSED>
fdisk: Geom not found
2.3 files# gmirror label -v -n -b round-robin pair0s1 /dev/ad6s1
Metadata value stored on /dev/ad6s1.
Done.
2.4 files# gmirror load
2.5 files# tail /var/log/messages
Jan 3 14:51:52 files su: bch to root on /dev/ttyp0
Jan 3 14:57:11 files kernel: GEOM_MIRROR: Device pair0s1 created
(id=3D1777907344).
Jan 3 14:57:11 files kernel: GEOM_MIRROR: Device pair0s1: provider
ad6s1 detected.
Jan 3 14:57:11 files kernel: GEOM_MIRROR: Device pair0s1: provider
ad6s1 activated.
Jan 3 14:57:11 files kernel: GEOM_MIRROR: Device pair0s1: provider
mirror/pair0s1 launched.
2.6 files# bsdlabel -w -B /dev/mirror/pair0s1
2.7 files# fdisk -s /dev/ad6
/dev/ad6: 310101 cyl 16 hd 63 sec
Part Start Size Type Flags
1: 63 312581745 0xa5 0x80
2.8 files# fdisk -s /dev/ad4
/dev/ad4: 310101 cyl 16 hd 63 sec
Part Start Size Type Flags
1: 63 312576642 0xa5 0x80
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