Migrating a virtual machine from Oracle VM Server 2.2 to Oracle VM Server 3.4
Environment
Oracle VM server release 2.2.2
Oracle VM server release 3.4.3
VMs: Redhat/Oracle Linux 5,6,7.
Importing VM2 to VM3 Template
Shutdown VM in v2 environment.
Locate System.img
and vm.cfg, e.g.
pwd
/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/running_pool/184_dtoocl10
ll
total 69206016
-rw------- 1 root root
53687091200 Feb 10 2012 OPTORACLE.img
-rw------- 1 root root
17179869184 Feb 10 2012 System.img
-rw------- 1 root root 778 Jul
5 11:24 vm.cfg
-rw------- 1 root root 666 Feb 10 2012 vm.cfg.orig
Backup vm.cfg
cp vm.cfg vm.cfg.backup
Modify vm.cfg and remove all disks except System.img. Other
disks will be imported separately, I just don’t want them to be included in a
template, to keep the template small.
disk =
['file:/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/running_pool/184_dtoocl10/System.img,xvda,w',
'file:/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/running_pool/184_dtoocl10/OPTORACLE.img,xvdb,w',
'file:/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/sharedDisk/PIRUAT.img,xvdc,w!',
'file:/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/sharedDisk/PIRBUAT_ARCHIVE.img,xvdd,w!',
]
Check/Kill IPtables
Share the current directory
python -m SimpleHTTPServer 80
Serving HTTP on 0.0.0.0 port
80 ...
Go to VM3 Manager and Import
VM Template. All disks mentioned in vm.cfg must be included in the URLs if
you didn’t delete them from vm.cfg.
Rename the template from System.img to something like dtoocl10_template_vm2,
if migrating more than one VM otherwise you’ll have multiple templates with the
same name.
Rename the Virtual Disk from System.img to something like template_dtoocl10_System.img
On VM2 hypervisor:
Kill SimpleHTTPServer
Restore vm.cfg
cp vm.cfg.backup vm.cfg
cp: overwrite `vm.cfg'? y
Locate other virtual disks, likely in “sharedDisk”, e.g.
/var/ovs/mount/B0CAFC70A7DB489C973D9819396703F7/sharedDisk
Go to that directory and share it
python -m SimpleHTTPServer 80
Serving HTTP on 0.0.0.0 port
80 ...
Go to VM3 Manager and Import
Virtual Disk.
Rename the virtual disk if needed.
Kill SimpleHTTPServer
Creating VM
Rename the VM
Set Operating System
Setup network at Networks
tab
Add other virtual disks at Disks tab, e.g. /opt/oracle or DB disk.
Rename SYSTEM virtual disk, and other disks if needed.
Modify vm.cfg
file with extra='S' to boot in Single user mode.
Start the VM in Single user mode.
Launch Console.
Check that the disks are mounted
Change IP address
in /etc/hosts
Change IP address
and Gateway in /etc/sysconfig/network-scripts/ifcfg-eth0 (Oracle
Linux 5 in this case)
Shutdown the VM
Update DNS entry
Remove extra=’S’ from vm.cfg
Start the VM
SSH to the VM and check DB and Apps. (You might need ipconfig /flushdns)
Cleaning up
Remove imported templates.
