Start rescue
1.Check and Note backup start time
# date
2. Insert Red Hat Enterprise Linux 4 AS(Update5) installation CD into CD-ROM
3. Reboot
# shutdown -r now
4. After reboot, type “linux rescue” (start rescue) and press enter key in prompt on the screen below.
boot:linux rescue
5. A screen to choose language is displayed. Choose “English”. Press tab key to move focus onto “OK”, and press enter key.
6. A screen to choose keyboard appears. Choose “Your Keybord Type”.
7. A screen to specify if network is used is displayed. Choose “No”.
8. A screen to specify if existing system image should be mounted on /mnt/sysimage appears. Choose “Skip”.
9. Shell is executed with below message output and prompt is displayed.
When finished please exit from the shell
and your system will reboot
-/bin/sh-3.00#
System backup
a. Check target host
1. Mount /dev/sda1
mkdir /mnt/sda1
mount /dev/sda1 /mnt/sda1
If root partition resides on LVM
scan for VGs in system
# lvm vgscanactivate VGs
# lvm vgchange -aydisplay VGs
# lvm lvs
Make and mount the directories
# mkdir -p /mnt/vg_{root,opt}
#mount /dev/VolGroup00/LogVol00 /mnt/vg_root
#mount /dev/VolGroup00/LogVol01 /mnt/vg_opt
2. Check host name
# cat /mnt/sda1/etc/sysconfig/network
HOSTNAME=****(or ****)
Check message above is displayed
b. Copy shells for backup
1. Copy shells for back up to /tmp
#cp –p /mnt/sda6/backup/BAK_***backup.sh /tmp
2. Unmount /dev/sda1
#umount /dev/sda1 /mnt/sda1
c. System backup
1. Insert tape for backup (original) into tape drive
2.Execute shell for backup
#cd /tmp
#./BAK_***backup.sh
3. When backup is completed, press eject buttom and remove the tape from drive
4. Insert tape for backup (copy) into tape drive
5. Execute shell for backup
#cd /tmp
#./BAK_***backup.sh
7. When backup is completed, press eject button and remove the tape from drive
d. System restart
1. Take Red Hat Enterprise Linux 4 AS(Update7) installation CD out from CD-ROM drive
2. Restart system
#exit