1 Libguestfs is tools and a library for accessing and modifying guest
2 disk images. For more information see the home page:
6 For discussion, development, patches, etc. please use the mailing
9 http://www.redhat.com/mailman/listinfo/libguestfs
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15 - recent QEMU >= 0.13 with virtio-serial support
17 - kernel >= 2.6.34 with virtio-serial support enabled. virtio-block
18 and virtio-serial support are not required but highly recommended.
20 - febootstrap >= 3.0 (recommended >= 3.3)
21 *NB*: febootstrap 2.x WILL NOT WORK
22 febootstrap 3.x is distro-independent, and is required on
23 Debian and other distros too
25 - XDR, rpcgen (on Linux these are provided by glibc)
27 - pcre (Perl Compatible Regular Expressions C library) (optional)
29 - libmagic (the library that corresponds to the 'file' command) (optional)
35 - Augeas (http://augeas.net/) (optional)
39 - squashfs-tools (mksquashfs only)
41 - genisoimage / mkisofs
43 - hivex >= 1.2.1 (http://libguestfs.org/download)
45 - (Optional) Berkeley DB 'db_dump' and 'db_load' utilities
46 (db4-utils or db4.X-util or similar)
48 - (Optional) FUSE to build the FUSE module
50 - perldoc (pod2man, pod2text, pod2html) to generate the manual pages
51 and other documentation.
53 - (Optional) Readline to have nicer command-line editing in guestfish.
55 - (Optional) xmllint to validate virt-inspector RELAX NG schema
57 - (Optional) OCaml if you want to rebuild the generated files, and
58 also to build the OCaml bindings
60 - (Optional) Perl if you want to build the perl bindings
62 - (Optional) Python if you want to build the python bindings
64 - (Optional) Ruby, rake if you want to build the ruby bindings
66 - (Optional) Java, JNI, jpackage-utils if you want to build the java
69 - (Optional) GHC if you want to build the Haskell bindings
71 - (Optional) Perl Sys::Virt module.
73 - (Optional) Perl Win::Hivex module.
75 - (Optional) Perl Pod::Usage module.
77 - (Optional) Perl Test::More module (from perl Test::Simple).
79 - (Optional) Perl String::ShellQuote module.
81 - (Optional, but highly recommended) perl-libintl for translating perl code.
83 - (Optional) po4a for translating manpages and POD files.
85 - (Optional) PHP, phpize if you want to build the PHP bindings
87 Running ./configure will check you have all the requirements installed
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94 Then make the daemon, library and root filesystem:
99 Finally run the tests:
103 If everything works, you can install the library and tools by running
104 this command as root:
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112 By far the most common problem is with broken or incompatible
115 Different versions of qemu have problems booting the appliance for
116 different reasons. This varies between versions of qemu, and Linux
117 distributions which add their own patches.
119 If you find a problem, you could try using your own qemu built from
120 source (qemu is very easy to build from source), with a 'qemu
121 wrapper'. Qemu wrappers are described in the guestfs(3) manpage.
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127 By default the configure script will look for qemu-kvm (KVM support).
128 You will need a reasonably recent processor for this to work. KVM is
129 much faster than using plain Qemu.
131 You may also need to enable KVM support for non-root users, by following
134 http://www.linux-kvm.org/page/FAQ#How_can_I_use_kvm_with_a_non-privileged_user.3F
136 On some systems, this will work too:
140 On some systems, the chmod will not survive a reboot, and you will
141 need to make edits to the udev configuration.
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147 Previous versions of libguestfs required something called "vmchannel".
148 Vmchannel is a special device given to virtual machines which allows
149 them to communicate in some way with the host, often (but not always)
150 without using a traditional network device. In reality, there is no
151 one thing called "vmchannel". This idea has been reimplemented
152 several times under the name vmchannel, and other hypervisors have
153 their own incompatible implementation(s) too.
155 In libguestfs <= 1.0.71, we required a specific vmchannel which is
156 properly known as "guestfwd" and has been upstream in qemu since here:
158 http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html
160 In libguestfs >= 1.0.71 we don't require any vmchannel implementation,
161 as long as qemu has been compiled with support for SLIRP (user mode
162 networking, or "-net user"), which is almost always the case.
164 In libguestfs >= 1.5.4 we switched again to using qemu's virtio-serial
165 and removed all the other vmchannels and the SLIRP channel.
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171 In libguestfs >= 1.7.19 the supermin appliance is the default and only
172 supported form of appliance. For more information see febootstrap
173 (http://people.redhat.com/~rjones/febootstrap/).
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179 On my machines I can usually rebuild the appliance in around 3
180 minutes. If it takes much longer for you, use a local distro mirror
183 To use squid to cache yum downloads, read this first:
184 https://lists.dulug.duke.edu/pipermail/yum/2006-August/009041.html
185 (In brief, because yum chooses random mirrors each time, squid doesn't
186 work very well with default yum configuration. To get around this,
187 choose a Fedora mirror which is close to you, set this with
188 './configure --with-mirror=[...]', and then proxy the whole lot
189 through squid by setting http_proxy environment variable).
191 You will also need to substantially increase the squid configuration
193 http://fedoraproject.org/wiki/Using_Mock_to_test_package_builds#Using_Squid_to_Speed_Up_Mock_package_downloads
196 Porting to other Linux distros / non-Linux
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199 libguestfs itself should be fairly portable to other Linux
200 distributions. Non-Linux ports are trickier, but we will accept
201 patches if they aren't too invasive.
203 The main porting issues are with the dependencies needed to build the
204 appliance. You will need to port the febootstrap first
205 (http://people.redhat.com/~rjones/febootstrap/).
208 Copyright and license information
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211 Copyright (C) 2009-2010 Red Hat Inc.
213 The library is distributed under the LGPLv2+. The programs are
214 distributed under the GPLv2+. Please see the files COPYING and
215 COPYING.LIB for full license information.