778d007150
Currently diskimage-builder supports two ways to specify the image size. One is defining a fixed image size using DIB_IMAGE_SIZE, the other one is auto-detection while adding a security margin of 60% as free space. This means when building larger images (e.g. >100GB) with unknown size upfront we end up with much wasted space, IO and network traffic when uploading the images to several cloud providers. This can be optimized by adding a third way by defining DIB_IMAGE_EXTRA_SIZE to specify the free space in GB. This makes it possible to easily build images of varying sizes while still minimizing the overhead by keeping the free space constant to e.g. 1GB. Change-Id: I114c739d11d0cfe3b8d8abc6df5ff989edfb67f2
Image building tools for OpenStack
diskimage-builder is a flexible suite of components for
building a wide-range of disk images, filesystem images and ramdisk
images for use with OpenStack.
This repository has the core functionality for building such images, both virtual and bare metal. Images are composed using elements; while fundamental elements are provided here, individual projects have the flexibility to customise the image build with their own elements.
For example:
$ DIB_RELEASE=trusty disk-image-create -o ubuntu-trusty.qcow2 vm ubuntuwill create a bootable Ubuntu Trusty based qcow2
image.
diskimage-builder is useful to anyone looking to produce
customised images for deployment into clouds. These tools are the
components of TripleO that are
responsible for building disk images. They are also used extensively to
build images for testing OpenStack itself, particularly with nodepool.
Platforms supported include Ubuntu, CentOS, RHEL and Fedora.
Full documentation, the source of which is in
doc/source/, is published at:
Copyright
Copyright 2012 Hewlett-Packard Development Company, L.P. Copyright (c) 2012 NTT DOCOMO, INC.
All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.