[fedora-virt] vm from fc13 ro rhel/CentOS 5

[Kashyap Chamarthy]

On 07/23/2010 01:45 PM, Gianluca Cecchi wrote:
> On Thu, Jul 22, 2010 at 11:54 AM, Kashyap Chamarthy <kchamart at redhat.com
> <mailto:kchamart at redhat.com>> wrote:
>
>
>     FWIW, the below worked for me while trying to migrate vms from one
>     host to another(in my case,both RHEL5.5). I used 'virsh' (from libvirt)
>
>     1) 'virsh dumpxml <domain (or) id>'--this will dump the  guest
>     machine info. into XML.
>     2) copy your qcow2 image disk from host1 to host2.
>     3) 'virsh define <xml file>'  for the dumped xml  files from step 1)
>
>     Now you should be good to start/run the above guest on your host2
>     (running kvm..)
>
>     /kashyap
>
>
> yes, the vm was a CentOS 5.5 os.
> It worked like a charm.

glad that it worked..

/kashyap


> I made a dump from a previous rh el 5 vm already existent on the rh el
> 5.5 host, using it as baseline for differences.
> And this is diff output between xml dump in FC13 and the modified
> version to have it imported by rh el 5.5
> (btw I changed memory size from 1Gb to 2Gb as I passed from my laptop to
> an enterprise 16Gb based server...)
>
> #diff f13out.xml rhel55in.xml
> < <name>op</name>
> < <memory>2097152</memory>
> < <currentMemory>2097152</currentMemory>
> ---
>  > <name>o11p</name>
>  > <uuid>8030a286-d41c-d692-648a-4d0aad122bdd</uuid>
>  > <memory>1048576</memory>
>  > <currentMemory>1048576</currentMemory>
> 7c8
> < <type arch='x86_64' machine='pc'>hvm</type>
> ---
>  > <type arch='x86_64' machine='fedora-13'>hvm</type>
> 8a10
>  > <boot dev='cdrom'/>
> 14a17,20
>  > <cpu match='exact'>
>  > <model>core2duo</model>
>  > <feature policy='force' name='x2apic'/>
>  > </cpu>
> 20c26
> < <emulator>/usr/libexec/qemu-kvm</emulator>
> ---
>  > <emulator>/usr/bin/qemu-kvm</emulator>
> 23c29
> < <source file='/VMDATA/o11p.img'/>
> ---
>  > <source file='/var/lib/libvirt/images/c55.img'/>
>
>
> I only had to change then network parameters in vm os.
> In virt-manager I also removed the audio card.
> I was then also able to apply "yum update" to this new vm and it runs
> quite good.
> Thanks,
> Gianluca