Helper tool to build debian based virtual disks.
vdisk is a tool to create a debian system suitable for use by a virtualization technology such as kvm/qemu. The output image is is a sparse file holding a a partition table, the grub boot loader and a filesystem containing the base system.
vdisk is designed to run in Debian GNU/Linux and the standard configuration builds a Debian Squeeze image.
vdisk depends on a few packages being installed on the system where images are built. This can be accomplished by running the following command:
apt-get install kpartx parted lvm2 python-argparse
vdisk builds sparse images and mounts them to loopback devices for convenient access.
This allows for easy manipulation of these images inside of a chroot, effectively letting allow for setup of a virtual base system without having to run a virtual machine.
All of the following commands must be run as root on a linux host.
vdisk expects a configuration file in the current working directory called vdisk.yaml, an example should be distributed with this package.
Build a fresh image and bootstrap a base system to it.
bin/vdisk foo.img create bin/vdisk foo.img bootstrap
Install required packages, and prepare image for booting.
bin/vdisk foo.img install [selections]
Try it out.
bin/vdisk foo.img enter
When you have a successfully installed a system, try it out using a virtual machine or an emulator like qemu.
qemu-system-x86_64 -hda foo.img -monitor stdio
You must include /boot/grub/menu.lst it in your vdisk.yaml. Simple example:
default 0 timeout 3 title EC2 root (hd0,0) kernel /vmlinuz root=/dev/mapper/VolFoo-root ro initrd /initrd.img
Depending on your kernel you might also need to create /etc/initramfs-tools/modules with xenblk and xennet modules, vdisk will execute update-initramfs as the final step.
vdisk.yaml - Contains configuration for how to create your virtual disk.
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
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