vm image -> Xen or OracleVM

존에 VMware 상에서 운영하던 VM(Virtual Machine) guest image를,

xen 기반(Oracle VM을 포함한...)의 가상화 플랫폼에서 사용할 수 있도록 convert 하는 방법이다.

1. 여러개로 나뉘어진 파일을 한개로 합하기. (create a single, growable virtual disk (type 0))

[root@sdyang LOBI.5.0.01]# ls

LOBI.5.0.01.nvram      LOBI.5.0.01-s008.vmdk  LOBI.5.0.01.vmx

LOBI.5.0.01-s001.vmdk  LOBI.5.0.01-s009.vmdk  LOBI.5.0.01.vmxf

LOBI.5.0.01-s002.vmdk  LOBI.5.0.01-s010.vmdk  vmware-0.log

LOBI.5.0.01-s003.vmdk  LOBI.5.0.01-s011.vmdk  vmware-1.log

LOBI.5.0.01-s004.vmdk  LOBI.5.0.01-s012.vmdk  vmware-2.log

LOBI.5.0.01-s005.vmdk  LOBI.5.0.01-s013.vmdk  vmware.log

LOBI.5.0.01-s006.vmdk  LOBI.5.0.01.vmdk

LOBI.5.0.01-s007.vmdk  LOBI.5.0.01.vmsd

[root@sdyang LOBI.5.0.01]# time vmware-vdiskmanager -r LOBI.5.0.01.vmdk -t 0 V2V_LOBI.5.0.01.vmdk

Using log file /tmp/vmware-root/vdiskmanager.log

Creating a monolithic growable disk 'V2V_LOBI.5.0.01.vmdk'

  Convert: 100% done.

Virtual disk conversion successful.

real    8m3.429s

user    0m2.014s

sys     0m36.017s

[root@sdyang LOBI.5.0.01]# ls -la V2V*

-rw------- 1 root root 7120158720 2008-07-28 11:41 V2V_LOBI.5.0.01.vmdk

2. Oracle VM Server로 copy 하기..

[root@sd-ovmhost2 ~]# mkdir /OVS/running_pool/V2V_LOBI

[root@sdyang LOBI.5.0.01]# scp V2V_LOBI.5.0.01.vmdk root@sd-ovmhost2:/OVS/runnin_pool/V2V_LOBI/

The authenticity of host 'sd-ovmhost2 (10.179.110.61)' can't be established.

RSA key fingerprint is 67:e0:e3:e2:e5:2b:ff:4f:45:08:7a:ff:4d:c9:62:5f.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'sd-ovmhost2,10.179.110.61' (RSA) to the list of known hosts.

root@sd-ovmhost2's password: 

V2V_LOBI.5.0.01.vmdk                          100% 6790MB   9.2MB/s   12:19 

3. VMware single disk를 qemu-img를 이용하여 raw image로 변환하기.

[root@sd-ovmhost2 V2V_LOBI]# qemu-img convert -f vmdk V2V_LOBI.5.0.01.vmdk -O raw V2V_LOBI.5.0.01.img

4. Virtual Machine config file 만들기

[root@sd-ovmhost2 V2V_LOBI]# cat vm.cfg

acpi = 1

apic = 1

builder = 'hvm'

device_model = '/usr/lib/xen/bin/qemu-dm'

disk = ['file:/OVS/running_pool/V2V_LOBI/V2V_LOBI.5.0.01.img,hda,w',

',hdc:cdrom,r',

]

kernel = '/usr/lib/xen/boot/hvmloader'

memory = '384'

name = 'V2V_LOBI'

on_crash = 'restart'

on_poweroff = 'destroy'

on_reboot = 'restart'

pae = 1

serial = 'pty'

vcpus = 2

vif = ['bridge=xenbr1,mac=00:16:3E:5B:12:59,type=ioemu']

vnc = 1

vncconsole = 1

vnclisten = '0.0.0.0'

vncpasswd = 'oracle'

vncunused = 1

5. start 하기

[root@sd-ovmhost2 V2V_LOBI]# xm creat vm.cfg

[root@sd-ovmhost2 V2V_LOBI]# xm list

Name                                        ID   Mem VCPUs      State   Time(s)

Domain-0                                     0   582     2     r-----  27433.5

V2V_LOBI                                    21   384     2     -b----     27.7

OVM Manager에서 관리하기 위해서는,

OVM Manager 접속해서, Resources -> Virtual Machine Images -> Import 해서 사용하면 된다.

VMware 와 OVM 사이의 몇가지 차이점으로 인해 첫번째 부팅시 설정을 해야 하는 경우가 있다.

특히 X-Windows를 사용함에 있어서 VGA Card Model의 변경으로 인해서,

runlevel 5로 부팅시 오류가 날 수 있다. 물론 system-config-display로 해결가능하다..