aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/ia64/xen.txt
blob: c61a99f7c8bbeefa2d96ef6b9fe3ff5c67e135fb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
       Recipe for getting/building/running Xen/ia64 with pv_ops
       --------------------------------------------------------

This recipe describes how to get xen-ia64 source and build it,
and run domU with pv_ops.

============
Requirements
============

  - python
  - mercurial
    it (aka "hg") is an open-source source code
    management software. See the below.
    http://www.selenic.com/mercurial/wiki/
  - git
  - bridge-utils

=================================
Getting and Building Xen and Dom0
=================================

  My environment is;
    Machine  : Tiger4
    Domain0 OS  : RHEL5
    DomainU OS  : RHEL5

 1. Download source
    # hg clone http://xenbits.xensource.com/ext/ia64/xen-unstable.hg
    # cd xen-unstable.hg
    # hg clone http://xenbits.xensource.com/ext/ia64/linux-2.6.18-xen.hg

 2. # make world

 3. # make install-tools

 4. copy kernels and xen
    # cp xen/xen.gz /boot/efi/efi/redhat/
    # cp build-linux-2.6.18-xen_ia64/vmlinux.gz \
      /boot/efi/efi/redhat/vmlinuz-2.6.18.8-xen

 5. make initrd for Dom0/DomU
    # make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
      O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
    # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
      2.6.18.8-xen --builtin mptspi --builtin mptbase \
      --builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \
      --builtin ehci-hcd

================================
Making a disk image for guest OS
================================

 1. make file
    # dd if=/dev/zero of=/root/rhel5.img bs=1M seek=4096 count=0
    # mke2fs -F -j /root/rhel5.img
    # mount -o loop /root/rhel5.img /mnt
    # cp -ax /{dev,var,etc,usr,bin,sbin,lib} /mnt
    # mkdir /mnt/{root,proc,sys,home,tmp}

    Note: You may miss some device files. If so, please create them
    with mknod. Or you can use tar instead of cp.

 2. modify DomU's fstab
    # vi /mnt/etc/fstab
       /dev/xvda1  /            ext3    defaults        1 1
       none        /dev/pts     devpts  gid=5,mode=620  0 0
       none        /dev/shm     tmpfs   defaults        0 0
       none        /proc        proc    defaults        0 0
       none        /sys         sysfs   defaults        0 0

 3. modify inittab
    set runlevel to 3 to avoid X trying to start
    # vi /mnt/etc/inittab
       id:3:initdefault:
    Start a getty on the hvc0 console
       X0:2345:respawn:/sbin/mingetty hvc0
    tty1-6 mingetty can be commented out

 4. add hvc0 into /etc/securetty
    # vi /mnt/etc/securetty (add hvc0)

 5. umount
    # umount /mnt

FYI, virt-manager can also make a disk image for guest OS.
It's GUI tools and easy to make it.

==================
Boot Xen & Domain0
==================

 1. replace elilo
    elilo of RHEL5 can boot Xen and Dom0.
    If you use old elilo (e.g RHEL4), please download from the below
    http://elilo.sourceforge.net/cgi-bin/blosxom
    and copy into /boot/efi/efi/redhat/
    # cp elilo-3.6-ia64.efi /boot/efi/efi/redhat/elilo.efi

 2. modify elilo.conf (like the below)
    # vi /boot/efi/efi/redhat/elilo.conf
     prompt
     timeout=20
     default=xen
     relocatable

     image=vmlinuz-2.6.18.8-xen
             label=xen
             vmm=xen.gz
             initrd=initrd-2.6.18.8-xen.img
             read-only
             append=" -- rhgb root=/dev/sda2"

The append options before "--" are for xen hypervisor,
the options after "--" are for dom0.

FYI, your machine may need console options like
"com1=19200,8n1 console=vga,com1". For example,
append="com1=19200,8n1 console=vga,com1 -- rhgb console=tty0 \
console=ttyS0 root=/dev/sda2"

=====================================
Getting and Building domU with pv_ops
=====================================

 1. get pv_ops tree
    # git clone http://people.valinux.co.jp/~yamahata/xen-ia64/linux-2.6-xen-ia64.git/

 2. git branch (if necessary)
    # cd linux-2.6-xen-ia64/
    # git checkout -b your_branch origin/xen-ia64-domu-minimal-2008may19
    (Note: The current branch is xen-ia64-domu-minimal-2008may19.
    But you would find the new branch. You can see with
    "git branch -r" to get the branch lists.
    http://people.valinux.co.jp/~yamahata/xen-ia64/for_eagl/linux-2.6-ia64-pv-ops.git/
    is also available. The tree is based on
    git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 test)


 3. copy .config for pv_ops of domU
    # cp arch/ia64/configs/xen_domu_wip_defconfig .config

 4. make kernel with pv_ops
    # make oldconfig
    # make

 5. install the kernel and initrd
    # cp vmlinux.gz /boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU
    # make modules_install
    # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img \
      2.6.26-rc3xen-ia64-08941-g1b12161 --builtin mptspi \
      --builtin mptbase --builtin mptscsih --builtin uhci-hcd \
      --builtin ohci-hcd --builtin ehci-hcd

========================
Boot DomainU with pv_ops
========================

 1. make config of DomU
   # vi /etc/xen/rhel5
     kernel = "/boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU"
     ramdisk = "/boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img"
     vcpus = 1
     memory = 512
     name = "rhel5"
     disk = [ 'file:/root/rhel5.img,xvda1,w' ]
     root = "/dev/xvda1 ro"
     extra= "rhgb console=hvc0"

 2. After boot xen and dom0, start xend
   # /etc/init.d/xend start
   ( In the debugging case, # XEND_DEBUG=1 xend trace_start )

 3. start domU
   # xm create -c rhel5

=========
Reference
=========
- Wiki of Xen/IA64 upstream merge
  http://wiki.xensource.com/xenwiki/XenIA64/UpstreamMerge

Written by Akio Takebe <takebe_akio@jp.fujitsu.com> on 28 May 2008