Vi`blog · 唯音 » 虚拟机 http://www.viyin.net 岂能尽如人意，但求无愧于心 Mon, 14 Nov 2011 15:43:49 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 在 Linux 上通过 Xen运行 FreeBSD http://www.viyin.net/2010/05/linux-xen-freebsd.html http://www.viyin.net/2010/05/linux-xen-freebsd.html#comments Fri, 07 May 2010 15:17:58 +0000 vi http://www.viyin.net/?p=725 　™ hypervisor 是一个开放源代码的并行虚拟化产品， 并由商业的 XenSource 公司提供支持。 在这种系统中，客户操作系统称为 domU 域， 而宿主系统则称为 dom0。 在 Linux 上运行 虚拟机实例的第一步， 是安装用于 Linux dom0 的 。 在这个例子中， 宿主系统采用的发行版本是 Slackware Linux
在 Linux dom0 上安装 Xen 3
1.从 XenSource 下载 Xen 3.0

从 http://www.xensource.com/ 下载 xen-3.0.4_1-src.tgz。

2.解压缩源代码包

# cd xen-3.0.4_1-src
# KERNELS=”linux-2.6-xen0 linux-2.6-xenU” make world
# make install
注意: 为 dom0 重新编译内核：

# cd xen-3.0.4_1-src/linux-2.6.16.33-xen0
# make menuconfig
# make
# make install
对于较早版本的 Xen，可能需要指定 make ARCH=xen menuconfig
3.在 Grub 的 menu.lst 中增加一个对应的菜单项

编辑 /boot/grub/menu.lst 并在其中增加下列配置：

title Xen-3.0.4
root (hd0,0)
kernel /boot/xen-3.0.4-1.gz dom0_mem=262144
module /boot/vmlinuz-2.6.16.33-xen0 root=/dev/hda1 ro
4.重新启动计算机并进入 Xen

首先， 编辑 /etc/xen/xend-config.sxp，并在其中增加下列配置：

(network-script ‘network-bridge netdev=eth0′)
接下来就可以运行 Xen 了：

# /etc/init.d/xend start
# /etc/init.d/xendomains start
现在 dom0 已经开始运行：

# xm list
Name ID Mem VCPUs State Time(s)
Domain-0 0 256 1 r—– 54452.9
22.2.2.2 FreeBSD 7-CURRENT domU
　　从 http://www.fsmware.com/ 下载用于 Xen 3.0 的 FreeBSD domU 内核。

•kernel-current

•mdroot-7.0.bz2

•xmexample1.bsd

　　将配置文件 xmexample1.bsd 放到 /etc/xen/ 并修改与内核及磁盘映像位置有关的配置项。下面是一个示范的例子：

kernel = “/opt/kernel-current”
memory = 256
name = “freebsd”
vif = [ '' ]
disk = [ 'file:/opt/mdroot-7.0,hda1,w' ]
#on_crash = ‘preserve’
extra = “boot_verbose”
extra += “,boot_single”
extra += “,kern.hz=100″
extra += “,vfs.root.mountfrom=ufs:/dev/xbd769a”
　　其中， mdroot-7.0.bz2 应是未压缩的。

　　接下来， 您需要修改 kernel-current 中的 __xen_guest 小节， 并加入 Xen 3.0.3 所需要的 VIRT_BASE：

# objcopy kernel-current -R __xen_guest
# perl -e ‘print “LOADER=generic,GUEST_OS=freebsd,GUEST_VER=7.0,XEN_VER=xen-3.0,BSD_SYMTAB,VIRT_BASE=0xC0000000\x00″‘ > tmp
# objcopy kernel-current –add-section __xen_guest=tmp
# objdump -j __xen_guest -s kernel-current

kernel-current: file format elf32-i386

Contents of section __xen_guest:
0000 4c4f4144 45523d67 656e6572 69632c47 LOADER=generic,G
0010 55455354 5f4f533d 66726565 6273642c UEST_OS=freebsd,
0020 47554553 545f5645 523d372e 302c5845 GUEST_VER=7.0,XE
0030 4e5f5645 523d7865 6e2d332e 302c4253 N_VER=xen-3.0,BS
0040 445f5359 4d544142 2c564952 545f4241 D_SYMTAB,VIRT_BA
0050 53453d30 78433030 30303030 3000 SE=0xC0000000.
　　现在可以创建并运行 domU 了：

# xm create /etc/xen/xmexample1.bsd -c
Using config file “/etc/xen/xmexample1.bsd”.
Started domain freebsd
WARNING: loader(8) metadata is missing!
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 7.0-CURRENT #113: Wed Jan 4 06:25:43 UTC 2006
kmacy@freebsd7.gateway.2wire.net:/usr/home/kmacy/p4/freebsd7_xen3/src/sys/i386-xen/compile/XENCONF
WARNING: DIAGNOSTIC option enabled, expect reduced performance.
Xen reported: 1796.927 MHz processor.
Timecounter “ixen” frequency 1796927000 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 1.80GHz (1796.93-MHz 686-class CPU)
Origin = “GenuineIntel” Id = 0xf29 Stepping = 9
Features=0xbfebfbff DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0×4400>
real memory = 265244672 (252 MB)
avail memory = 255963136 (244 MB)
xc0: on motherboard
cpu0 on motherboard
Timecounters tick every 10.000 msec
[XEN] Initialising virtual ethernet driver.
xn0: Ethernet address: 00:16:3e:6b:de:3a
[XEN]
Trying to mount root from ufs:/dev/xbd769a
WARNING: / was not properly dismounted
Loading configuration files.
No suitable dump device was found.
Entropy harvesting: interrupts ethernet point_to_point kickstart.
Starting file system checks:
/dev/xbd769a: 18859 files, 140370 used, 113473 free (10769 frags, 12838 blocks, 4.2% fragmentation)
Setting hostname: demo.freebsd.org.
lo0: flags=8049 mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0×2
inet 127.0.0.1 netmask 0xff000000
Additional routing options:.
Mounting NFS file systems:.
Starting syslogd.
/etc/rc: WARNING: Dump device does not exist. Savecore not run.
ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/X11R6/lib /usr/local/lib
a.out ldconfig path: /usr/lib/aout /usr/lib/compat/aout /usr/X11R6/lib/aout
Starting usbd.
usb: Kernel module not available: No such file or directory
Starting local daemons:.
Updating motd.
Starting sshd.
Initial i386 initialization:.
Additional ABI support: linux.
Starting cron.
Local package initialization:.
Additional TCP options:.
Starting background file system checks in 60 seconds.

Sun Apr 1 02:11:43 UTC 2007

FreeBSD/i386 (demo.freebsd.org) (xc0)

login:
　　现在 domU 应该能运行 FreeBSD 7.0-CURRENT 内核了：

# uname -a
FreeBSD demo.freebsd.org 7.0-CURRENT FreeBSD 7.0-CURRENT #113: Wed Jan 4 06:25:43 UTC 2006
kmacy@freebsd7.gateway.2wire.net:/usr/home/kmacy/p4/freebsd7_xen3/src/sys/i386-xen/compile/XENCONF i386
　　接下来可以在 domU 中配置网络了。 FreeBSD domU 会使用一种称做 xn0 的专用网络接口：

# ifconfig xn0 10.10.10.200 netmask 255.0.0.0
# ifconfig
xn0: flags=843 mtu 1500
inet 10.10.10.200 netmask 0xff000000 broadcast 10.255.255.255
ether 00:16:3e:6b:de:3a
lo0: flags=8049 mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0×2
inet 127.0.0.1 netmask 0xff000000
　　在 dom0 Slackware 上 会出现一些 Xen 专用的网络接口：

# ifconfig
eth0 Link encap:Ethernet HWaddr 00:07:E9:A0:02:C2
inet addr:10.10.10.130 Bcast:0.0.0.0 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:815 errors:0 dropped:0 overruns:0 frame:0
TX packets:1400 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:204857 (200.0 KiB) TX bytes:129915 (126.8 KiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:99 errors:0 dropped:0 overruns:0 frame:0
TX packets:99 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9744 (9.5 KiB) TX bytes:9744 (9.5 KiB)

peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:1853349 errors:0 dropped:0 overruns:0 frame:0
TX packets:952923 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2432115831 (2.2 GiB) TX bytes:86528526 (82.5 MiB)
Base address:0xc000 Memory:ef020000-ef040000

vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:1400 errors:0 dropped:0 overruns:0 frame:0
TX packets:815 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:129915 (126.8 KiB) TX bytes:204857 (200.0 KiB)

vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:157 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:140 (140.0 b) TX bytes:158 (158.0 b)

xenbr1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:112 (112.0 b) TX bytes:0 (0.0 b)
# brctl show
bridge name bridge id STP enabled interfaces
xenbr1 8000.feffffffffff no vif0.1
peth0
vif1.0

]]> http://www.viyin.net/2010/05/linux-xen-freebsd.html/feed 0 xen安装配置 http://www.viyin.net/2010/03/xen.html http://www.viyin.net/2010/03/xen.html#comments Mon, 29 Mar 2010 04:52:07 +0000 vi http://www.viyin.net/?p=716 初次配置，我装了X11和VNCSERVER(vnc配置)。图形界面方便些。

1.安装xen
# yum -y install *
安装XEN需要的服务
# yum -y install kernel-xen*
安装管理程序
#yum -y install virt-manager

2.修改/etc/grub.conf ，用XEN内核启动

3.virt-manager管理界面


4.新建虚拟机
安装源我用了NFS搭建


网卡选择桥接

总览

xen虚拟机配置文件,第一次装好后，复制几个虚拟机，然改配置文件就好了

  1. [root@as xen]# pwd
  2. /etc/xen
  3. [root@as xen]# ls
  4. auto       vi1  xend-config.sxp          xmexample1     xmexample.vti
  5. qemu-ifup  vi2  xend-pci-permissive.sxp  xmexample2
  6. scripts    vi3  xend-pci-quirks.sxp      xmexample.hvm
  7. [root@as xen]# cat vi1
  8. name = "vi1"
  9. uuid = "8d251f04-80ff-9309-b525-33309522c256"
  10. maxmem = 512
  11. memory = 256
  12. vcpus = 4
  13. bootloader = "/usr/bin/pygrub"
  14. on_poweroff = "destroy"
  15. on_reboot = "restart"
  16. on_crash = "restart"
  17. vfb = [ "type=vnc,vncunused=1,keymap=en-us" ]
  18. disk = [ "tap:aio:/var/lib/xen/images/vi1.img,xvda,w" ]
  19. vif = [ "mac=00:16:36:7b:5c:61,bridge=xenbr0,script=vif-bridge" ]
  20. [root@as xen]# cat vi2
  21. name = "vi2"
  22. uuid = "8d251f04-80ff-9309-b525-33309522c257"
  23. maxmem = 512
  24. memory = 256
  25. vcpus = 4
  26. bootloader = "/usr/bin/pygrub"
  27. on_poweroff = "destroy"
  28. on_reboot = "restart"
  29. on_crash = "restart"
  30. vfb = [ "type=vnc,vncunused=1,keymap=en-us" ]
  31. disk = [ "tap:aio:/var/lib/xen/images/vi2.img,xvda,w" ]
  32. vif = [ "mac=00:16:36:7b:5c:62,bridge=xenbr0,script=vif-bridge" ]
]]> http://www.viyin.net/2010/03/xen.html/feed 3 虚拟机中ADSL拨号 http://www.viyin.net/2010/02/virtual-adsl.html http://www.viyin.net/2010/02/virtual-adsl.html#comments Sat, 06 Feb 2010 11:51:15 +0000 vi http://www.viyin.net/?p=641 前段时间饱受换IP之苦，又是装花生壳，又是做NAT，不仅烦，速度还不快，还要等几分钟新的解析生效。。

目前这样做效果蛮舒服的。真实机器做静态NAT，再开个虚拟机拨号，不会断线，不用等解析了。

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