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You can launch an instance directly from an image that has been copied to a persistent volume. Create a volume that is large enough to store an unzipped image. Create an image. For details, see Creating images manually in the OpenStack Virtual Machine Image Guide. Launch an instance. Attach the volume to the instance. Assuming that the attached volume is mounted as /dev/vdb, use one of the following commands to copy the image to the attached volume: For a raw image: $ cat IMAGE >/dev/vdb Alternatively, use dd. For a non-raw image: $ qemu-img convert -O raw IMAGE /dev/vdb For a *.tar.bz2 image: $ tar xfjO IMAGE >/dev/vdb Because only detached volumes are available for booting, detach the volume. Now, you can launch an instance from an image that has been copied to the volume. The instance is booted from the volume, which is provided by nova-volume through iSCSI. To launch an instance from the volume, see .