--- /dev/null
+/bindings
+/history
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<div id="titlepage">
+ <p class="title">
+ virt-resize, virt-sparsify, virt-customize, virt-sysprep, virt-builder
+ </p>
+ <p><author>
+ Richard W.M. Jones <br/>
+ <small>rjones @ redhat.com</small>
+ </author></p>
+ <p>
+ <b>libguestfs</b> is a library and set of tools for manipulating
+ virtual machine disk images.
+ </p>
+ <p>
+ This talk is about the <b>virt-tools</b> which build on this
+ library to provide many useful abstractions.
+ </p>
+</div>
--- /dev/null
+*
+!.gitignore
\ No newline at end of file
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+remember 'qemu-img info fedora-22.qcow2'
+remember 'virt-df -a fedora-22.qcow2 -h'
+remember 'qemu-img create -f qcow2 fedora-22-bigger.qcow2 10G'
+remember 'virt-resize fedora-22.qcow2 fedora-22-bigger.qcow2 --expand sda3'
+remember 'virt-df -a fedora-22-bigger.qcow2 -h'
+
+echo "Running virt-resize"
+
+cd 1000-virt-resize.d
+terminal
--- /dev/null
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+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker6345)"
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+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-weight:normal;font-size:20px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan7113"
+ x="144"
+ y="164.36221">deleted/unused space in the guest</tspan></text>
+ <text
+ sodipodi:linespacing="125%"
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+ x="144.71428"
+ style="font-style:normal;font-weight:normal;font-size:20px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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+</svg>
--- /dev/null
+*
+!.gitignore
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>Thin provisioning</h1>
+
+<object height="80%" width="99%"
+ data="2000-thin-provisioning.svg"
+ type="image/svg+xml">
+ <img src="2000-thin-provisioning.svg">
+</object>
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+
+remember 'qemu-img info fedora-22.img'
+remember 'du -sh fedora-22.img'
+remember 'virt-df -a fedora-22.img -h'
+remember 'virt-sparsify --inplace fedora-22.img'
+remember 'qemu-img info fedora-22.img'
+remember 'du -sh fedora-22.img'
+
+echo "Running virt-sparsify"
+
+cd 2000-virt-sparsify.d
+terminal
--- /dev/null
+*
+!.gitignore
\ No newline at end of file
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-customize</h1>
+
+<ul>
+<li> Install, upgrade packages.
+<li> Inject files, directories, SSH keys.
+<li> Set root, user passwords.
+<li> Edit files.
+<li> Run scripts.
+<li> Add firstboot (RunOnce) scripts.
+<li> Set hostname, timezone.
+<li> File operations (delete, link, chmod, mkdir, etc.)
+<li> Attach to RHN.
+</ul>
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+
+remember 'virt-customize -a fedora-22.img --install gcc,gdb --root-password password:123456 --edit /etc/selinux/config:s/^SELINUX=.*/SELINUX=permissive/'
+remember 'virt-cat -a fedora-22.img /etc/selinux/config'
+
+echo "Running virt-customize"
+
+cd 3000-virt-customize.d
+terminal
--- /dev/null
+*
+!.gitignore
\ No newline at end of file
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+
+remember 'virt-sysprep -a fedora-22.img'
+remember 'virt-sysprep --list-operations'
+
+echo "Running virt-sysprep"
+
+cd 4000-virt-sysprep.d
+terminal
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-builder: Preparing templates</h1>
+
+<p style="text-align: center">
+virt-install <br/>
+↓ <br/>
+virt-sysprep <br/>
+↓ <br/>
+virt-sparsify <br/>
+↓ <br/>
+xz compress <br/>
+↓ <br/>
+Online template repository <br/>
+<small>(<a href="http://libguestfs.org/download/builder/">http://libguestfs.org/download/builder</a>)</small>
+</p>
--- /dev/null
+*
+!.gitignore
\ No newline at end of file
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+
+remember 'virt-builder -l'
+remember 'virt-builder --notes rhel-7.1'
+
+echo "virt-builder"
+
+cd 5000-virt-builder.d
+terminal
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-builder: Running</h1>
+
+<p style="text-align: center">
+Download a template <br/>
+↓ <br/>
+xz uncompress <br/>
+↓ <br/>
+virt-resize <br/>
+↓ <br/>
+virt-customize <br/>
+↓ <br/>
+Disk image ready to boot
+</p>
--- /dev/null
+#!/bin/bash -
+
+source functions
+
+# History.
+
+remember 'virt-builder rhel-7.1'
+remember 'virt-builder rhel-7.1 --install gcc --selinux-relabel'
+remember 'virt-builder rhel-7.1 --size 20G'
+remember 'virt-df -a rhel-7.1.img -h'
+
+echo "Running virt-builder"
+
+cd 5000-virt-builder.d
+terminal
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>virt-builder: Distro metadata</h1>
+
+<table>
+<tr>
+<td width="30%" valign="top">
+
+<div style="
+ border: 1px solid black;
+ font-size: 40%;
+">
+<p style="text-align: center">
+virt-install <br/>
+↓ <br/>
+virt-sysprep <br/>
+↓ <br/>
+virt-sparsify <br/>
+↓ <br/>
+xz compress <br/>
+↓ <br/>
+Online template repository <br/>
+<small>(<a href="http://libguestfs.org/download/builder/">http://libguestfs.org/download/builder</a>)</small>
+</p>
+</div>
+
+</td>
+<td width="55%" valign="top">
+
+<pre style="
+ width: 40%;
+ font-size: 80%;
+ margin-left: 3em;
+">
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+[centos-6.6]
+name=CentOS 6.6
+arch=x86_64
+file=CentOS-6.6-x86_64-Cloud.raw.xz
+checksum[sha512]=fc403ea3555a560...
+format=raw
+size=6442450944
+compressed_size=199265736
+expand=/dev/sda3
+
+-----BEGIN PGP SIGNATURE-----
+</pre>
+
+</td>
+</tr>
+</table>
+
+<p style="text-align: center;">
+virt-builder can pull templates from multiple
+repositories.
+</p>
--- /dev/null
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<link rel="stylesheet" href="style.css" type="text/css"/>
+<script src="code.js" type="text/javascript"></script>
+
+<h1>More information</h1>
+
+<ul>
+<li> Project page and sources: <br>
+<a href="http://libguestfs.org/"><b><big>lib<small> </small>guest<small> </small>fs.org</big></b></a>
+<li> <a href="http://libguestfs.org/virt-resize.1.html">http://libguestfs.org/virt-resize.1.html</a>
+<li> <a href="http://libguestfs.org/virt-sparsify.1.html">http://libguestfs.org/virt-sparsify.1.html</a>
+<li> <a href="http://libguestfs.org/virt-customize.1.html">http://libguestfs.org/virt-customize.1.html</a>
+<li> <a href="http://libguestfs.org/virt-sysprep.1.html">http://libguestfs.org/virt-sysprep.1.html</a>
+<li> <a href="http://libguestfs.org/virt-builder.1.html">http://libguestfs.org/virt-builder.1.html</a>
+<li> Available in all major Linux distros:
+Fedora ≥ 11, RHEL ≥ 6.0,
+Debian, Ubuntu, SUSE, Arch, Gentoo, etc etc.
+<li> Used widely by Red Hat customers
+<li> Developers and testers at Red Hat: <br/>
+Pino Toscano,
+Shahar Havivi,
+Arik Hadas,
+Tingting Zheng,
+Junqin Zhou,
+Hu Zhang,
+Wei Shi,
+Lingfei Kong,
+John Eckersberg.
+</ul>
--- /dev/null
+virt-resize, virt-sparsify, virt-customize, virt-sysprep, virt-builder
+----------------------------------------------------------------------
+
+Audience:
+
+ - Interested in manipulating disk images.
+ - May be familiar with disk images, formats, but may not be.
+ - Not developers.
+
+
+1000: Resizing a disk image
+----------------------------------------------------------------------
+
+Show a disk image, use 'qemu-img info' to get data about it.
+
+ $ qemu-img info fedora-22.qcow2
+
+--> Format
+--> Size : virtual and physical may not be related
+
+What the guest would see when booted up:
+
+ $ virt-df -a fedora-22.qcow2 -h
+
+Always use 'qemu-img info', not 'ls -l'.
+
+What if the guest needs more space?
+There are various ways to resize a disk image:
+
+ - Just make the container bigger ('qemu-img resize' or even 'truncate').
+ But the partitions won't get bigger. [illustrate with picture]
+
+ - Run a tool inside the guest, like parted. It won't usually work
+ if the disk is mounted.
+
+ - Run a tool alongside the guest, but still in a VM, eg. PartitionMagic,
+ GParted Live.
+
+ - Use virt-resize on the host for offline resizing.
+
+ $ qemu-img create -f qcow2 fedora-22-bigger.qcow2 10G
+ $ virt-resize fedora-22.qcow2 fedora-22-bigger.qcow2 --expand sda3
+ $ virt-df -a fedora-22-bigger.qcow2 -h
+
+virt-resize is quite flexible: For example you could give /dev/sda1
+500 MB and give the rest to /dev/sda3, or you could tell virt-resize
+to put the new space into an extra partition.
+
+Also works for Windows.
+
+
+2000: Sparsifying a disk image
+----------------------------------------------------------------------
+
+Show a fully allocated disk image, this time with 'ls -lh':
+
+ $ qemu-img info fedora-22.img
+ $ du -sh fedora-22.img
+ $ virt-df -a fedora-22.img -h
+
+Sparsify it in place:
+
+ $ virt-sparsify --inplace fedora-22.img
+ $ qemu-img info fedora-22.img
+ $ du -sh fedora-22.img
+
+Explain the two modes for sparsification.
+
+Also works for Windows.
+
+
+3000: Customizing a disk image
+----------------------------------------------------------------------
+
+The situation is that you have an existing guest operating system, and
+you want to _offline_ install packages, set the root password, inject
+files, set the hostname, or about a dozen other things.
+
+ $ virt-customize -a fedora-22.img --install gcc,gdb --root-password password:123456 --edit /etc/selinux/config:s/^SELINUX=.*/SELINUX=permissive/
+ $ virt-cat -a fedora-22.img /etc/selinux/config
+
+Also works for a limited range of operations on Windows. On Windows,
+most work is done using "firstboot" batch files that run once at the
+next boot.
+
+
+4000: Sysprepping a disk image
+----------------------------------------------------------------------
+
+SYSPREP.EXE is a Microsoft proprietary program for preparing a Windows
+system for duplication. It removes the identity of the system.
+
+We borrow the name of this program for the next tool, virt-sysprep,
+which does a similar job for Linux systems, turning them into
+templates from which you can clone further guests. This is a tool
+you'll probably either use all the time or never need to use at all.
+
+ $ virt-sysprep -a fedora-22.img
+
+It runs on the guest in-place.
+
+It performs a serious of sysprepping operations, which you can read
+about in the manual.
+
+There are some operations which are not enabled by default:
+
+ $ virt-sysprep --list-operations
+
+You'll want to read the manual before using this.
+
+This deletes the SSH host keys, because you wouldn't want those to be
+duplicated across clones. But it can't set up a fresh random seed for
+each clone. For that you need to set a random seed after the clone,
+using virt-customize. Virt-builder which I'll talk about next also
+sets a fresh random seed automatically.
+
+
+5000: Building a disk image
+----------------------------------------------------------------------
+
+Show a diagram of the whole process and how the tools are related.
+
+ preparing templates for virt-builder
+ virt-install ---> sysprep ---> sparsify ---> compress ---> templates
+ (OS installer) repository
+
+ running virt-builder as an end user
+ download a template ---> uncompress ---> resize/format ---> customize ---> result
+ or a cloud image
+
+
+ $ virt-builder -l
+ $ virt-builder --notes rhel-7.1
+ $ virt-builder rhel-7.1
+
+Speed is important!
+
+Any virt-customize options can be used:
+
+ $ virt-builder rhel-7.1 --install gcc --selinux-relabel
+
+If you use the --size option, virt-resize is invoked which takes a bit
+longer:
+
+ $ virt-builder rhel-7.1 --size 20G
+ $ virt-df -a rhel-7.1.img -h
+
+virt-builder only builds disk images. It doesn't run them or upload
+them into glance.
+
+Other tools have been built around virt-builder.
--- /dev/null
+This is a talk about particular virt tools (virt-resize,
+virt-sparsify, virt-customize, virt-sysprep, virt-builder) which I
+gave privately to Red Hat colleagues (December 2015) and then recorded
+for QEMU's Hangouts on Air programme.
--- /dev/null
+# -*- shell-script -*-
+
+# Colour ls.
+if [ -f /etc/profile.d/colorls.sh ]; then . /etc/profile.d/colorls.sh; fi
+
+# Fancy prompt colours (see
+# https://wiki.archlinux.org/index.php/Color_Bash_Prompt)
+promptcol='\e[0;32m' ;# colour for the prompt
+commandcol='\e[1;31m' ;# colour for the typed command
+outputcol='\e[0m' ;# colour for command output
+
+export PS1="\n\[$promptcol\]\$ \[$commandcol\]"
+
+trap 'echo -ne "$outputcol"' DEBUG
+
+# Load key bindings (if any).
+bind -f $talkdir/bindings
--- /dev/null
+# -*- shell-script -*-
+# This creates some standard functions. See also $talkdir/bashrc
+# which runs in the same bash context as the terminal.
+
+# Place any local environment variables and settings in "local".
+if [ -f local ]; then source local; fi
+
+# Environment variables.
+export HISTFILE=$talkdir/history
+export PATH=$talkdir:$PATH
+export EDITOR="emacs -nw"
+
+# Ditch libvirt for stability :-(
+export LIBGUESTFS_BACKEND=direct
+
+# remember <command> <args ...>
+#
+# This function does two things: (1) It adds the command and arguments
+# to the shell history, so that commands can be recalled using up
+# arrow or reverse search. (2) It makes a function key recall the
+# command. The first command is assigned to F2, the second to F3 and
+# so forth.
+
+rm -f $HISTFILE
+touch $HISTFILE
+rm -f $talkdir/bindings
+touch bindings
+
+fnum=2
+keys=(- OP OQ OR OS '[15~' '[17~' '[18~' '[19~' '[20~' '[21~')
+
+remember ()
+{
+ echo "$@" >> $HISTFILE
+ echo \"\\e${keys[$fnum]}\":\"\\C-k \\C-u"$@"\" >> $talkdir/bindings
+ ((fnum++))
+}
+
+terminal ()
+{
+ chmod -w $HISTFILE
+ /bin/bash --rcfile $talkdir/bashrc "$@"
+}
--- /dev/null
+#!/bin/bash -
+# Run the talk.
+
+set -e
+
+# Avoid GNOME keyring stupidity
+export GNOME_KEYRING_CONTROL=
+export GNOME_KEYRING_PID=
+
+# Clean up everything.
+find -name '*~' -delete
+rm -f [1-9]000-*.d/*
+
+# No proxy.
+#unset http_proxy
+#unset https_proxy
+#unset ftp_proxy
+
+# Get everything into the cache.
+guestfish -a /dev/null run || exit 1
+
+# If not 'quick mode', create the initial images.
+if [ "$1" != "--quick" ]; then
+ pushd 1000-virt-resize.d
+ virt-builder --format qcow2 fedora-22
+ popd
+
+ pushd 2000-virt-sparsify.d
+ qemu-img convert ../1000-virt-resize.d/fedora-22.qcow2 -O raw -o preallocation=falloc fedora-22.img
+ popd
+
+ pushd 3000-virt-customize.d
+ qemu-img convert ../1000-virt-resize.d/fedora-22.qcow2 -O raw fedora-22.img
+ popd
+
+ pushd 4000-virt-sysprep.d
+ qemu-img convert ../1000-virt-resize.d/fedora-22.qcow2 -O raw fedora-22.img
+ popd
+
+ pushd 5000-virt-builder.d
+ popd
+fi
+
+# Run techtalk.
+#techtalk-pse
+~/d/techtalk-pse/techtalk-pse
--- /dev/null
+/* Red Hat red is rgb(204,0,0). */
+
+body {
+ background: url(redhat.png) no-repeat;
+ background-position: 98% 0;
+ /* font-size: 28pt; */ /* For max */
+ font-size: 20pt; /* For 1024x768 */
+ /* font-family: liberation, helvetica; */
+ font-family: helvetica;
+}
+
+body td, body th { /* why?? */
+ font-size: 24pt;
+ padding-bottom: 8px;
+}
+
+h1 {
+ color: rgb(204,0,0);
+ /*font-size: 48px;*/
+ font-size: 40px;
+ top: 8;
+ left: 0;
+ border-bottom: 2px solid rgb(204,0,0);
+}
+
+b {
+ color: rgb(204,0,0);
+}
+
+div#titlepage {
+ margin-top: 100px;
+ text-align: center;
+}
+
+div#titlepage p.title {
+ color: rgb(204,0,0);
+ font-weight: bold;
+ font-size: 48px;
+}
+
+div#titlepage author {
+ font-size: 36px;
+}
+
+/* Code */
+pre.code {
+ margin-left: 1em;
+ background: #eee;
+}
+
+code {
+ color: rgb(204,0,0);
+}
+
+/* Bullet points */
+li {
+ padding-bottom: 16px;
+}
+
+/* Logo */
+img#fish {
+ position: absolute;
+ top: 128px;
+ right: 32px;
+ width: 200px;
+ /*height: 256px;*/
+}
\ No newline at end of file
git.annexia.org / libguestfs-talks.git / commitdiff
