Dump partitions to new drive

To clone an existing install to a new drive the file systems must be dumped to the new drive. First, partition the new disk so that the data has a place to go.

fdisk /dev/sdb

Note: The server may need a reboot to see the new partition table

After the drive is ready you can use this script.

#!/bin/bash

NEWDRIVE=sdb
OLDDRIVE=sda

# Create mount points
mkdir /mnt/${NEWDRIVE}{1,2,5,6,7,8}

# Create file systems
PARTS="1 2 5 6 7 8"
for part in $PARTS; do mkfs -t ext3 /dev/${NEWDRIVE}${part}; done

# Mount them
for part in $PARTS; do mount -t ext3 /dev/${NEWDRIVE}${part} /mnt/${NEWDRIVE}${part}; done

# Transfer each partition
cd /mnt/${NEWDRIVE}1
dump -0uan -f - /boot | restore -r -f -
cd /mnt/${NEWDRIVE}2
dump -0uan -f - /usr | restore -r -f -
cd /mnt/${NEWDRIVE}5
dump -0uan -f - /var | restore -r -f -
cd /mnt/${NEWDRIVE}6
dump -0uan -f - /tmp | restore -r -f -
cd /mnt/${NEWDRIVE}7
dump -0uan -f - / | restore -r -f -
cd /mnt/${NEWDRIVE}8
dump -0uan -f - /home | restore -r -f -

# Apply labels
e2label /dev/${NEWDRIVE}1 /boot
e2label /dev/${NEWDRIVE}2 /usr
e2label /dev/${NEWDRIVE}5 /var
e2label /dev/${NEWDRIVE}6 /tmp
e2label /dev/${NEWDRIVE}7 /
e2label /dev/${NEWDRIVE}8 /home

e2label /dev/${OLDDRIVE}1 /boot-old
e2label /dev/${OLDDRIVE}2 /usr-old
e2label /dev/${OLDDRIVE}5 /var-old
e2label /dev/${OLDDRIVE}6 /tmp-old
e2label /dev/${OLDDRIVE}7 /-old
e2label /dev/${OLDDRIVE}8 /home-old

/sbin/grub --no-floppy --batch << EOF
root (hd1,0)
setup (hd1)
EOF

echo "Dumping file systems done."

echo "grub --no-floppy"
echo "root (hd1,0)"
echo "setup (hd1)"