How to Mount Disk Image (*.img) File on Linux

In some cases, we need to mount disk image to modify O/S files. There are many cases I used and remember one of them during the ODA VM Cloning process to get zero down time I change the IP configuration to not get IP conflict.

 

Here is the steps

 

[root@ittutorial test]# losetup -f

/dev/loop0

 

[root@ittutorial test]# losetup /dev/loop0 System.img

[root@ittutorial test]# kpartx -a /dev/loop0

[root@ittutorial test]# vgscan

Reading all physical volumes. This may take a while…

Found volume group “vg_crpapp” using metadata type lvm2

 

 [root@ittutorial test]# vgchange -ay vg_crpapp

2 logical volume(s) in volume group “vg_crpapp” now active

 

[root@ittutorial test]# ls -lrt /dev/mapper/vg_crpapp*

brw-rw—- 1 root disk 252, 67 Nov  5 16:32 /dev/mapper/vg_crpapp-lv_swap

brw-rw—- 1 root disk 252, 66 Nov  5 16:32 /dev/mapper/vg_crpapp-lv_root

 

[root@ittutorial test]# mkdir /image

[root@ittutorial test]# mount /dev/mapper/vg_crpapp-lv_root /CRP2/

vi /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE=Ethernet

BOOTPROTO=none

IPADDR=1.1.1.2

PREFIX=24

GATEWAY=1.1.1.1

DEFROUTE=yes

IPV4_FAILURE_FATAL=yes

IPV6INIT=no

NAME=”eth0″

UUID=60ba15ca-4460-40bf-9ae5-c041539f83ad

ONBOOT=yes

DEVICE=eth0

USERCTL=no

LAST_CONNECT=1471983821

Cihan Gedik

I am currently working as Senior Oracle Application Database Administrator. I have experienced many EBS database upgrade, migrations, Fresh EBS installations, Solaris to Linux, Windows to Linux replatform migration projects in medium and large companies and also experienced core database migration projects for one of the biggest bank of Katar.With my colleagues we decided to run this platform to share our knowledge and also create network in all over the world.

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