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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 containing a partition table, a boot loader (grub) and a partition with the base system. vdisk builds a sparse image and mounts it to a loopback device for convenient access. This allows for easy manipulation of these inside of a chroot, effectively allowing for bootstrapping a virtual base system without having to fire up a virtual machine. Installation ============ 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 Usage ===== 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 EC2 ===== 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. Important Files =============== vdisk.yaml - Contains configuration for how to create your virtual disk. This should be recreated in your project and modified to suit your needs. License & Credits ================= This software is released under the Apache 2 license, see LICENSE.txt for details. It is authored by John-John Tedro <email@example.com>, Noa Resare <firstname.lastname@example.org> and Lars-Erik Stenholm <email@example.com>. Copyright is held by Spotify AB.