xen-vtx-unstable

annotate README @ 6774:4d899a738d59

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author cl349@firebug.cl.cam.ac.uk
date Tue Sep 13 15:05:49 2005 +0000 (2005-09-13)
parents a83ac0806d6b
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iap10@706 9
iap10@706 10 University of Cambridge Computer Laboratory
kaf24@2849 11 3 November 2004
iap10@706 12
mwilli2@2762 13 http://www.cl.cam.ac.uk/netos/xen/
iap10@706 14
kaf24@2849 15 What is Xen?
kaf24@2849 16 ============
iap10@706 17
kaf24@2781 18 Xen is a Virtual Machine Monitor (VMM) originally developed by the
iap10@1061 19 Systems Research Group of the University of Cambridge Computer
kaf24@2781 20 Laboratory, as part of the UK-EPSRC funded XenoServers project.
kaf24@2849 21 Xen is freely-distributable Open Source software, released under the
kaf24@2849 22 GNU GPL.
iap10@706 23
kaf24@2781 24 The 2.0 release offers excellent performance, hardware support and
kaf24@2781 25 enterprise-grade features such as live migration. Linux 2.6, 2.4 and
kaf24@2781 26 NetBSD 2.0 are already available for Xen, with more operating system
kaf24@2781 27 ports on the way.
kaf24@1557 28
kaf24@2849 29 This file contains some quick-start instructions to install Xen on
kaf24@2849 30 your system. For full documentation, see the Xen User Manual. If this
kaf24@2849 31 is a pre-built release then you can find the manual at:
kaf24@2849 32 dist/install/usr/share/doc/xen/pdf/user.pdf
kaf24@2849 33 If you have a source release, then 'make -C docs' will build the
kaf24@2849 34 manual at docs/pdf/user.pdf.
kaf24@2849 35
kaf24@2849 36 Quick-Start Guide - Pre-Built Binary Release
kaf24@2849 37 ============================================
kaf24@2849 38
kaf24@2849 39 [NB. Unless noted otherwise, all the following steps should be
kaf24@2849 40 performed with root privileges.]
kaf24@2849 41
kaf24@2849 42 1. Install the binary distribution onto your filesystem:
kaf24@5556 43
kaf24@2849 44 # sh ./install.sh
kaf24@5556 45
kaf24@2849 46 Amongst other things, this will install Xen and XenLinux kernel
kaf24@2849 47 files in /boot, kernel modules and Python packages in /lib, and
kaf24@2849 48 various control tools in standard 'bin' directories.
kaf24@1557 49
kaf24@2849 50 2. Configure your bootloader to boot Xen and an initial Linux virtual
kaf24@2849 51 machine. Note that Xen currently only works with GRUB: less common
kaf24@2849 52 alternatives such as LILO are *not* supported. You can most likely
kaf24@2849 53 find your GRUB menu file at /boot/grub/menu.lst: edit this file to
kaf24@2849 54 include an entry like the following:
kaf24@5556 55
cl349@5225 56 # title Xen 2.0 / XenLinux 2.6
cl349@5225 57 # kernel /boot/xen-2.0.gz dom0_mem=<mem-kb> console=vga
cl349@5225 58 # module /boot/vmlinuz-2.6-xen0 root=<root-dev> ro console=tty0
kaf24@5556 59
kaf24@2849 60 For <mem-kb> you should specify the amount of memory, in kilobytes,
kaf24@2849 61 to allocate for use by your initial XenLinux virtual machine. Note
kaf24@2849 62 that Xen itself reserves about 32MB memory for internal use, which
kaf24@2849 63 is not available for allocation to virtual machines.
kaf24@2849 64 For <root-dev>, specify your usual root partition (e.g., /dev/hda1).
kaf24@2849 65
cl349@5225 66 3. Reboot your system and select the "Xen 2.0 / XenLinux 2.6" menu
kaf24@2849 67 option. After booting Xen, XenLinux will start and your
kaf24@2849 68 initialisation scripts should execute in the usual way.
kaf24@2849 69
kaf24@2849 70 Quick-Start Guide - Source Release
kaf24@2849 71 ==================================
kaf24@2849 72
kaf24@2849 73 First, there are a number of prerequisites for building a Xen source
kaf24@2849 74 release. Make sure you have all the following installed, either by
kaf24@2849 75 visiting the project webpage or installing a pre-built package
kaf24@2849 76 provided by your Linux distributor:
kaf24@2849 77 * GCC (preferably v3.2.x or v3.3.x; older versions are unsupported)
kaf24@2849 78 * GNU Make
kaf24@2849 79 * GNU Binutils
kaf24@2849 80 * Development install of libcurl (e.g., libcurl-dev)
kaf24@2849 81 * Development install of zlib (e.g., zlib-dev)
kaf24@2849 82 * Development install of Python v2.2 or later (e.g., python-dev)
kaf24@2849 83
kaf24@2849 84 [NB. Unless noted otherwise, all the following steps should be
kaf24@2849 85 performed with root privileges.]
kaf24@5556 86
kaf24@5556 87 1. Download and untar the source tarball file. This will be a
kaf24@5556 88 file named xen-unstable-src.tgz, or xen-$version-src.tgz.
kaf24@5556 89 You can also pull the current version from the SCMS
kaf24@5556 90 that is being used (Bitkeeper, scheduled to change shortly).
kaf24@5556 91
kaf24@5556 92 # tar xzf xen-unstable-src.tgz
kaf24@5556 93
kaf24@5556 94 Assuming you are using the unstable tree, this will
kaf24@5556 95 untar into xen-unstable. The rest of the instructions
kaf24@5556 96 use the unstable tree as an example, substitute the
kaf24@5556 97 version for unstable.
kaf24@5556 98
kaf24@5556 99 2. cd to xen-unstable (or whatever you sensibly rename it to).
kaf24@5556 100 The Linux (2.4 and 2.6), netbsd and freebsd kernel source
kaf24@5556 101 trees are in the $os-$version-xen-sparse directories.
kaf24@5556 102
kaf24@5556 103 On Linux:
kaf24@5556 104
kaf24@5556 105 3. For the very first build, or if you want to destroy existing
kaf24@5556 106 .configs and build trees, perform the following steps:
kaf24@5556 107
kaf24@5556 108 # make world
kaf24@5556 109 # make install
kaf24@5556 110
kaf24@5742 111 This will create the directories linux-2.6-xen0/ and
kaf24@5742 112 linux-2.6-xenU/ after first cleaning everything. It will
kaf24@5556 113 create and install into the dist/ directory which is the
kaf24@5556 114 default install location. It will build the xen binary
kaf24@5742 115 (xen.gz), the boot images for dom0 and an unprivileged
kaf24@5742 116 guest kernel (vmlinuz-2.6.x-xen0 and vmlinuz-2.6.x-xenU
kaf24@5556 117 respectively), the tools and the documentation.
kaf24@5556 118
kaf24@5556 119 4. To rebuild an existing tree without modifying the config:
kaf24@5556 120 # make dist
kaf24@5556 121
kaf24@5556 122 This will build and install xen, kernels, tools, and
kaf24@5556 123 docs into the local dist/ directory.
kaf24@5556 124
kaf24@5556 125 5. To rebuild a kernel with a modified config:
kaf24@5556 126
kaf24@5742 127 # cd linux-2.6-xen0 # or linux-2.6-xenU
kaf24@5556 128 # make ARCH=xen menuconfig # or xconfig
kaf24@5556 129 # cd ..
kaf24@5556 130 # make dist
kaf24@5556 131 # make install
kaf24@5556 132
kaf24@5742 133 You can copy your own config into linux-2.6-xen0 first.
kaf24@5556 134 Alternatively, you can also copy your config file to
kaf24@5556 135 dist/install/boot/config-$version-xen0/U. This is picked up
kaf24@5556 136 when a make dist is done. Include the ARCH=xen directive for
kaf24@5556 137 all make commands when building the kernels.
kaf24@5556 138
kaf24@5556 139 6. To see a full list of targets and a brief description, type:
kaf24@5556 140 # make help
kaf24@5556 141
kaf24@5556 142 7. Edit your grub.conf file as described above to have an
kaf24@5556 143 appropriate entry for your new kernel.