Clone entire system
Michael Gargiullo
mgargiullo at warpdrive.net
Thu Apr 1 19:05:56 UTC 2004
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Rock Pomerleau
> Sent: Thursday, April 01, 2004 9:27 AM
> To: redhat-list at redhat.com
> Subject: Clone entire system
>
> Hi everyone,
>
> I installed rhes 2.1 on the scsi disk 72gig. I would like to clone it
> on a 36 gig instead. So I created partition on the new 36gig disk,
> dumped partitons from 72gig to the new 36 gig. I moved the new disk to
> another but similar computer, and tried to boot from the new disk. It
> did'nt work. It is impossilble to boot from the new disk. I booted in
> rescue and I saw the new disk with all the stuffs on it.
>
> I certainly forgot something.
>
>
> Partition table of 72 gig
> fdisk -l /dev/cciss/c0d0
>
> Disk /dev/cciss/c0d0: 255 heads, 32 sectors, 17433 cylinders
> Units = cylinders of 8160 * 512 bytes
>
> Device Boot Start End Blocks Id System
> /dev/cciss/c0d0p1 * 1 13 53024 83 Linux
> /dev/cciss/c0d0p2 14 514 2044080 82 Linux swap
> /dev/cciss/c0d0p3 515 17433 69029520 83 Linux
>
> Partition table of 36 gig
> fdisk -l /dev/cciss/c0d1
>
> Disk /dev/cciss/c0d2: 255 heads, 32 sectors, 8716 cylinders
> Units = cylinders of 8160 * 512 bytes
>
> Device Boot Start End Blocks Id System
> /dev/cciss/c0d1p1 * 1 13 53024 83 Linux
> /dev/cciss/c0d1p2 14 514 2044080 82 Linux swap
> /dev/cciss/c0d1p3 515 8716 33464160 83 Linux
>
> TIA!
Mount the new disk. Then RSYNC from old to new. Don't rsync the /mnt
or /proc directories. create these 2 directories on new disk.
use e2label to label the partitions
I'm guessing on your partition structure
e2label /dev/cciss/c0d1p1 /boot
e2label /dev/cciss/c0d1p3 /
shutdown, and make the 36Gb drive the only drive. boot with either a
boot disk or the cd using > linux rescue.
chroot to the system image, and run grub-install
you should be able to reboot without a boot disk.
This method works for me with rh8, rh9, rhel3, and fedora
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