Mounting and converting vdi and qcow2 image files

1. Convert VirtualBox VDI disk file for use with KVM
$ qemu-img convert -O qcow2 diskname.vdi newdiskname.qcow2

2. Mounting raw disk images
# losetup /dev/loop0 image.img
# kpartx -a /dev/loop0
# mount /dev/mapper/loop0p1 /mnt/image

3. Mount qcow2 disk images

# modprobe nbd max_part=63
# qemu-nbd -c /dev/nbd0 image.img
# mount /dev/nbd0p1 /mnt/image

Optional: LVM
Scaning for LVM on disk images:

# vgscan
# vgchange -ay VolGroupName
# mount /dev/VolGroupName/LogVolName /mnt/image

Finishing:

# umount /mnt/image
# vgchange -an VolGroupName
# killall qemu-nbd
# kpartx -d /dev/loop0
# losetup -d /dev/loop0




From: http://jaysonrowe.blogspot.com.br/2011/10/convert-virtualbox-vdi-disk-for-use.html
From: http://alexeytorkhov.blogspot.com.br/2009/09/mounting-raw-and-qcow2-vm-disk-images.html

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