[Users] Move single vmdk (or else) disk into oVirt/RHEV

[Ayal Baron]

Thanks for the comprehensive answer!
One small nit - I would create the disk thin and not preallocated on nfs to avoid the lengthy 'dd'.

----- Original Message -----
> In the mean time I can share my successful one-shot experience with a
> WIndows XP VM.
> 
> Coming from Fedora 16 with Qemu/KVM as in its virt-preview repo
> qemu-kvm-0.15.1-8.fc16.x86_64
> 
> Windows XP ran as a VM, managed by virt-manager and already
> configured
> with virtio disk and network and qxl video adapter, accessed from F16
> with virt-viewer (0.4.1-3.fc16.x86_64)
> 
> I bought a 64Gb SSD disk that I put as the boot disk of a so newly
> installed and now flying Fedora 18.
> The original and old SATA first disk is now the second one.
> 
> Cpu is AMD Athlon(tm) II X4 630 Processor
> memory is 6Gb
> 
> Installed oVirt 3.2 beta in all-in-one configuration.
> /DATA is an oVirt local storage domain on the SSD disk root file
> system
> /data is a mount point on the old SATA disk.
> Under /data/virtstoragef16 I had the original storage pool for
> Qemu/KVM on fedora 16
> 
> - winxp original source disk
> # qemu-img info /data/virtstoragef16/winxp.img
> image: /data/virtstoragef16/winxp.img
> file format: raw
> virtual size: 11G (11811160064 bytes)
> disk size: 10G
> 
> - In oVirt I create a winxp desktop with one 11G virtio disk
> configured as preallocated and a virtio nic. Display configured with
> spice. I don't boot it
> 
> I notice during disk creation the oVirt managed dd command
> vdsm      5909  1661  4 00:03 ?        00:00:01 /usr/bin/dd
> if=/dev/zero
> of=/rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> bs=1048576 seek=0 skip=0 conv=notrunc count=11264 oflag=direct
> 
> At the end:
> # qemu-img info
> /DATA/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> image:
> /DATA/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> file format: raw
> virtual size: 11G (11811160064 bytes)
> disk size: 11G
> 
> - I create a time reference file
> This because in the disk image oVirt directory there are also
> metadata files
> 
> # ll
> /rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/
> total 11535368
> -rw-rw----. 1 vdsm kvm 11811160064 Feb 16 00:04
> e8ffd032-c159-4df9-a552-015b3f748482
> -rw-rw----. 1 vdsm kvm     1048576 Feb 16 00:04
> e8ffd032-c159-4df9-a552-015b3f748482.lease
> -rw-r--r--. 1 vdsm kvm         274 Feb 16 00:04
> e8ffd032-c159-4df9-a552-015b3f748482.meta
> 
> # touch -r
> /DATA/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> /tmp/testfile
> 
> I don't know if this is important, but just for consistence
> 
> - copy source to target
> /usr/bin/dd if=/data/virtstoragef16/winxp.img
> of=/rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> bs=1048576 seek=0 skip=0 conv=notrunc oflag=direct
> 
> - change timestamp of the overwritten disk
> touch -r /tmp/testfile
> /rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> 
> - verify
> # qemu-img info
> /rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> image:
> /rhev/data-center/65c9777e-23f1-4f04-8cea-e7c8871dc88b/0a8035e6-e41d-40ff-a154-e0a374f264b2/images/3b0d1e0f-d31a-4828-bb6c-8238ccc077ae/e8ffd032-c159-4df9-a552-015b3f748482
> file format: raw
> virtual size: 11G (11811160064 bytes)
> disk size: 11G
> 
> - start vm
> On webadmin: VM winxp is down. Exit message: [Errno 16] Device or
> resource busy: '/tmp/tmpxqZZDI'.
> 
> [root at tekkaman ~]# ll /tmp/tmpxqZZDI/
> total 0
> 
> Probably locked even if I never started the Windows XP VM yet...
> 
> - reboot of my pc
> 
> - activate ISO_DOMAIN
> and on this one I put an iso with spice-guest-tools-0.3.exe
> 
> 
> - start VM
> I'm able to connect to spice console from webadmin and I suddenly get
> hw discovery / change hw window asking for drivers
> I leave the windows there and instead I connect the CD and run
> spice-guest-tools-0.3.exe
> All goes well and I reboot my VM
> 
> In device manager I don't get any ? or problems related to devices.
> Video resolution is ok at 1680x1050 as it is the max in my monitor
> Audio is ok, tried with the already installed skype btw asking for an
> update, so the virtio network is also ok.
> 
> So for one shot migration it works, at least with my start and end
> environments.
> 
> Gianluca
>