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Tool to create sparse debian based disk images for virtual hosts
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pombredanne/vdisk
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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 holding a a partition table, the grub boot loader and a filesystem containing the base system. 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 Functionality ============= 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. 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. License & Credits ================= This software is released under the GNU GPL, see COPYING for details. It is authored by John-John Tedro <udoprog@spotify.com>, Noa Resare <noa@spotify.com> and Lars-Erik Stenholm <lasse@spotify.com>. Copyright is held by Spotify AB.
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