81355c4124
A huge problem with latency sensitive baremetal worklaods is interrupts being triggered spuriously. Unfortunately when we start with cloud images, often they default to logging to a serial console which means every write is an interrupt, which is far from ideal and can result in packet loss and service degredation quite quickly. So instead, if the console logging has been disabled, and no virtual terminal has been defined, we now strip the console entries from the resulting image. In testing with Centos9 Stream, with booting a VM, the console in this scenario jumps to the framebuffer once started, and after thousands of lines being written to the console, even with delays, locally I'm at 219 interrupts, with a bulk of the entries coming from before I interacted with the console (~135 from just boot). Change-Id: Id9b19c4d9804b88e6db05a20e26c8264bb357734
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=bionic disk-image-create -o ubuntu-bionic.qcow2 vm ubuntuwill create a bootable Ubuntu Bionic 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.