Hi!
I have this doub.
Look this scenario.
ServerA
I run this in terminal. This is the output.
---------------------
ServerB
I run this in terminal. This is the output.
*SITUATION*
- ServerA is running in
/dev/sda
/dev/sda1
/dev/sda2
- ServerB is running in
/dev/sdb
/dev/sdb1
/dev/sdb2
I made a backup of entire disk of ServerA:
dd if=/dev/sda of=/media/usb/fulldisk.img
Perfect.
Now, I want to restore that image to ServerB.
dd if=/media/usb/fulldisk.img of=/dev/sdb
Perfect.
*The problem*
The ServerB now is identical to ServerA, BUT, BUT...the fulldisk.img is backup of /dev/sda (ServerA) that means, the image inside, have /etc/fstab configured to work using /dev/sda NOT /dev/sdb... So, if I restore the image and try to boot ServerB, the boot will fail because is going to try to run from /dev/sda BUT now is NOT /dev/sda, is /dev/sdb!!
How can I solve this?
I have this doub.
Look this scenario.
ServerA
I run this in terminal. This is the output.
Code:
[root@ServerA ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
3.0G 2.7G 68M 98% /
/dev/sda1 190M 17M 164M 10% /boot
tmpfs 236M 81M 156M 35% /dev/shm
[root@ServerA ~]#ServerB
I run this in terminal. This is the output.
Code:
[root@ServerB ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
3.0G 2.7G 68M 98% /
/dev/sdb1 190M 17M 164M 10% /boot
tmpfs 236M 81M 156M 35% /dev/shm
[root@ServerB ~]#*SITUATION*
- ServerA is running in
/dev/sda
/dev/sda1
/dev/sda2
- ServerB is running in
/dev/sdb
/dev/sdb1
/dev/sdb2
I made a backup of entire disk of ServerA:
dd if=/dev/sda of=/media/usb/fulldisk.img
Perfect.
Now, I want to restore that image to ServerB.
dd if=/media/usb/fulldisk.img of=/dev/sdb
Perfect.
*The problem*
The ServerB now is identical to ServerA, BUT, BUT...the fulldisk.img is backup of /dev/sda (ServerA) that means, the image inside, have /etc/fstab configured to work using /dev/sda NOT /dev/sdb... So, if I restore the image and try to boot ServerB, the boot will fail because is going to try to run from /dev/sda BUT now is NOT /dev/sda, is /dev/sdb!!
How can I solve this?