HI:
I know this topic already exist in this forum but not exactly with my problem.
I want to duplicate a disk , my source disk is like 2gb size, while the new disk is like 36 gb size.
The problems:

When I use the command dd it fails, I think because the disk sizes, and the sizes of the sectors.´I can´t find any smaller disk!!!

I can use any ignite tools because I have 10.20, and I can´t upgrade to 11, because I have and application that only runs in 10.20

CAn any one help me? does dd has an extra option for different disk sizes??
Thanks alot.

What do you mean by duplicating a disk ?. Does it mean duplicating data in a disk ?. If the latter is the case, you may use MirrorUX to have a mirror copy made of all the lvols on the disk to the 36 GB drive.

OR

Just create a testVG on the 36GB drives and give all the filesystems a "/duplicate" prefix on the new disk and do a cp -R or cpio -pxdm.

Regds,

Kaps

Yes I want to duplicate the data on the disk, but is an operating system disk ( including the boot part), Do you think if I use cp -R to duplicate it, then I can use and I can boot with it?
Also I am tryng to duplicate a disk that is 36 GB of size but currently It only has 4 GB of data. But when I use the "dd" command it takes like 20 hours to duplicate it. What can i do to make it faster?
Thanks

pmoren, a plain cp -R will copy files across, but a boot disk has a lot more than just a bunch of files. Things like the LIF area, the boot block and such will not get copied across. You won't be able to boot from that disk.

You can still use cp -R, but it has very high risk associated with this. Being a boot disk , you will need to re-define the BDRA.

Easiest would be to go for Mirror UX [ It is a priced product ]

Regds,

Kaps

Thank you guys for your answers.
I have this procedure which instead of duplicating all the disk it duplicates volume group by volume group. It is very good because it saves a lot time ( I cant stop my servers for long periods) I did it with smaller disk and it worked very good, but now that I am tryng to duplicate one disk of 4 gigas into a 36 gigas its fails, I guess this happens because the volume group size is bad defined.

THIS IS THE ORIGINAL PROCEDURE THAT GIVE ME HP:
1) Initialize the disk and make it bootable
pvcreate -B /dev/rdsk/c1t6d0
Note: the -B parameter tells pvcreate that this will be a bootable
disk.
mkboot /dev/dsk/c1t6d0
mkboot -a "hpux" /dev/rdsk/c1t6d0
2) Create the volume group
mkdir /dev/vg01
mknod /dev/vg01/group c 64 0x010000
vgcreate /dev/vg01 /dev/dsk/c1t6d0
NOTA : puede ser necesario utilizar esta opcion para limitar el volum group a 4 megas:
vgcreate -s 8 /dev/vg01 /dev/dsk/c0t0d0


3) Find the size of each logical volume in vg00
vgdisplay -v /dev/vg00 | more
look at LV Size (Mbytes) for each logical volume and note it.
Note: this example will use these value:
lvol1 84M
lvol2 256M
lvol3 140M
lvol4 500M
lvol5 64M
lvol6 20M
lvol7 500M
lvol8 500M
Note: The size of the new logical volumes needs to be exactly the
same as the size of the logical volumes on the primary root disk.
4) Create the first 3 logical volumes contiguous (needed by the system)
lvol1:
lvcreate -L 84 -C y -r n /dev/vg01
lvol2:
lvcreate -L 256 -C y -r n /dev/vg01
lvol3:
lvcreate -L 140 -C y -r n /dev/vg01
5) Now create the other logical volumes
lvol4:
lvcreate -L 500 /dev/vg01
lvol5:
lvcreate -L 64 /dev/vg01
lvol6:
lvcreate -L 20 /dev/vg01
lvol7:
lvcreate -L 500 /dev/vg01
lvol8:
lvcreate -L 500 /dev/vg01
6) Copy each logical volume except the swap which is usually lvol2.
dd if=/dev/vg00/rlvol1 of=/dev/vg01/rlvol1 bs=1024k
dd if=/dev/vg00/rlvol3 of=/dev/vg01/rlvol3 bs=1024k
dd if=/dev/vg00/rlvol4 of=/dev/vg01/rlvol4 bs=1024k
dd if=/dev/vg00/rlvol5 of=/dev/vg01/rlvol5 bs=1024k
dd if=/dev/vg00/rlvol6 of=/dev/vg01/rlvol6 bs=1024k
dd if=/dev/vg00/rlvol7 of=/dev/vg01/rlvol7 bs=1024k
dd if=/dev/vg00/rlvol8 of=/dev/vg01/rlvol8 bs=1024k
7) Verify the integrity of all the new volume except swap.
Note: The following lines are base on a system with vxfs
filesystems except for /stand (lvol1) which needs to be hfs.
fsck -F hfs /dev/vg01/rlvol1
fsck -F vxfs /dev/vg01/rlvol3 (NOTA puede ser que la opcion correcta se hfs en lugar vxfs , al menos asi funciona)
fsck -F vxfs /dev/vg01/rlvol4
fsck -F vxfs /dev/vg01/rlvol5
fsck -F vxfs /dev/vg01/rlvol6
fsck -F vxfs /dev/vg01/rlvol7
fsck -F vxfs /dev/vg01/rlvol8
8) Now configure the Boot Data Reserved Area (BDRA)
Note: The following commands assume that /stand is lvol1,
swap is lvol2 and / is lvol3
lvlnboot -b /dev/vg01/lvol1 /dev/vg01
lvlnboot -r /dev/vg01/lvol3 /dev/vg01
lvlnboot -s /dev/vg01/lvol2 /dev/vg01
lvlnboot -d /dev/vg01/lvol2 /dev/vg01
9) Modify the fstab file on the new disk.
a) If /tmp_mnt doesn't exist create it
mkdir /tmp_mnt
b) Mount the new root filesystem on /tmp_mnt
mount /dev/vg01/lvol3 /tmp_mnt
c) change to etc directory on the new disk.
cd /tmp/etc
d) Modify all occurence of vg00 in the fstab for vg01
sed "s/vg00/vg01/" fstab > fstab.out
mv fstab fstab.BAK
mv fstab.out fstab
e) Unmount the new root filesystem
cd /
umount /tmp_mnt


WHEN I TRY TO DO, THIS IS THE LOG:

pvcreate -B /dev/rdsk/c0t0d0
mkboot /dev/dsk/c0t0d0
mknod /dev/vg06/group c 64 0x010000

vgcreate /dev/vg01 /dev/dsk/c0t4d0
Increased the number of physical extents per physical volume to 8750.
vgcreate: Volume group "/dev/vg01" could not be created:
File too large

( here is where is the problem, so I should change the default size using 8, but I guess it is not correct)

vgcreate -e 2048 /dev/vg01 /dev/dsk/c0t4d0
Increased the number of physical extents per physical volume to 8750.
vgcreate: Volume group "/dev/vg01" could not be created:
File too large
# vgcreate -s 8 /dev/vg01 /dev/dsk/c0t4d0
Increased the number of physical extents per physical volume to 4375.
Volume group "/dev/vg01" has been successfully created.
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf

( then when I try to create the logical volumen exactly the same size of the original, it fails)

lvcreate -L 100 -C y -r n /dev/vg01
Warning: rounding up logical volume size to extent boundary at size "104" MB.
Logical volume "/dev/vg01/lvol1" has been successfully created with
character device "/dev/vg01/rlvol1".
Logical volume "/dev/vg01/lvol1" has been successfully extended.
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.con

lvcreate -L 256 -C y -r n /dev/vg01
Logical volume "/dev/vg01/lvol2" has been successfully created with
character device "/dev/vg01/rlvol2".
Logical volume "/dev/vg01/lvol2" has been successfully extended.
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
# lvcreate -L 3
# lvcreate -L 3980 -C y -r n /dev/vg01 (ESTE LO CREO MAS GRANDE POR SI SE REDUCE POR EL TAMAÑO DE LOS EXTENDS)
Warning: rounding up logical volume size to extent boundary at size "3984" MB.
Logical volume "/dev/vg01/lvol3" has been successfully created with
character device "/dev/vg01/rlvol3".
Logical volume "/dev/vg01/lvol3" has been successfully extended.
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
# lvcreate -L 20 /dev/vg01
Warning: rounding up logical volume size to extent boundary at size "24" MB.
Logical volume "/dev/vg01/lvol4" has been successfully created with
character device "/dev/vg01/rlvol4".
Logical volume "/dev/vg01/lvol4" has been successfully extended.
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf

Despues copie los discos
dd if=/dev/vg00/rlvol1 of=/dev/vg01/rlvol1 bs=1024k
100+0 records in
100+0 records out
# dd if=/dev/vg00/rlvol3 of=/dev/vg01/rlvol3 bs=1024k
3700+0 records in
3700+0 records out
dd if=/dev/vg00/rlvol4 of=/dev/vg01/rlvol4 bs=1024k
20+0 records in
20+0 records out


despues checo la integridad de los volumenes
fsck -F hfs /dev/vg01/rlvol1
** /dev/vg01/rlvol1
** Last Mounted on /stand
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
25 files, 0 icont, 33403 used, 66266 free (18 frags, 8281 blocks)
***** MARKING FILE SYSTEM CLEAN *****

***** FILE SYSTEM WAS MODIFIED *****
al checar el filesystem 3 marco algunos errores:
# fsck -F hfs /dev/vg01/rlvol3
** /dev/vg01/rlvol3
** Last Mounted on /
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
UNREF FILE I=88222
OWNER=root MODE=100664
SIZE=20 MTIME=Nov 17 00:04 2005
CLEAR? y

UNREF FILE I=88257
OWNER=root MODE=100600
SIZE=17846 MTIME=Nov 17 00:04 2005
CLEAR? y

UNREF FILE I=88258
OWNER=root MODE=100600
SIZE=456072 MTIME=Nov 17 00:05 2005
CLEAR? y

FREE INODE COUNT WRONG IN SUPERBLK
FIX? y

** Phase 5 - Check Cyl groups
475 BLK(S) MISSING
BAD CYLINDER GROUPS
FIX? y

** Phase 6 - Salvage Cylinder Groups
76198 files, 0 icont, 3072806 used, 633891 free (10491 frags, 77925 blocks)
***** MARKING FILE SYSTEM CLEAN *****

***** FILE SYSTEM WAS MODIFIED *****
#
# fsck -F hfs /dev/vg01/rlvol4
** /dev/vg01/rlvol4
** Last Mounted on /home
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
6 files, 0 icont, 332 used, 19529 free (33 frags, 2437 blocks)
***** MARKING FILE SYSTEM CLEAN *****

***** FILE SYSTEM WAS MODIFIED *****
#
Hago las ligas del master boot
lvlnboot -b /dev/vg01/lvol1 /dev/vg01
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
# lvlnboot -r /dev/vg01/lvol3 /dev/vg01
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
# lvlnboot -s /dev/vg01/lvol2 /dev/vg01
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
# lvlnboot -d /dev/vg01/lvol2 /dev/vg01
Volume Group configuration for /dev/vg01 has been saved in /etc/lvmconf/vg01.conf
#
por ultimo cambio la tabla:
# pwd
/tmp_mnt/etc
# sed "s/vg00/vg01/" fstab > fstab.out
# mv fstab fstab.BAK
# mv fstab.out fstab

Then I try to boot whit my new disk. If the original disk still connected it boots and works, if is not connected,the boot fails.Even if I put the new disk in the same SCSI direction than the original, it doesnt boot.
Do you know how can i define the size of a volume group?
long post.... I hope you can help me.
Thanks, bye