Le 29/03/2011 21:56, Erwan RENIER a e''crit :> Le 29/03/2011 10:12, Peter LindstrXXm a e''crit :
>>
>> Hi all!
>>
>> I''m looking for a working tutorial on how to install Xen 4.0
on
>> Debian 6. I''ve googled and found several ones that
didn''t work 100%.
>> So my hope goes to you guys.
>>
>> Sincerely,
>> Peter
>>
> well, it''s pretty straight forward as i remember :
>
> The easiest way is to install xen-linux-system-2.6-xen-amd64 with apt
> ( i suppose you''re on a 64 kernel version )
>
> It will install all the needed packages.
>
Seems not finaly , here''s the complete list if needed :
apt-get install libxenstore3.0 linux-image-2.6.32-5-xen-amd64
xen-hypervisor-4.0-amd64 xen-linux-system-2.6-xen-amd64
xen-linux-system-2.6.32-5-xen-amd64 xen-qemu-dm-4.0 xen-utils-4.0
xen-utils-common xenstore-utils xenwatch
> Edit /etc/xen/xend-config.sxp :
> uncomment this line if you want to bridge your DomUs on the host :
> # (network-script network-bridge)
> uncomment/add this line if you want to use vnc without password by
> default :
> (vncpasswd '''')
> ignore the line wich say the bridge will be named xenbr0, it''s not
> true anymore, it now rename the interface eth0 in peth0 and create a
> bridge named eth0
> Reboot... tada!
> :)
>
> here''s a sample from grub.cfg ( grub2 ) :
>
> menuentry ''Debian GNU/Linux, with Linux 2.6.38-rc8-konradxen+ and
XEN 4.0.2-rc3-pre'' --class debian --class gnu-linux --class gnu --class
os --class xen {
> insmod part_msdos
> insmod ext2
> set root=''(hd0,msdos5)''
> search --no-floppy --fs-uuid --set
6149b0be-4294-49c5-871f-7195a3333cc8
> echo ''Chargement de Linux 2.6.38-rc8-konradxen+
...''
> multiboot /xen-4.0.2-rc3-pre.gz placeholder dom0_max_vcpus=1
dom0_vcpus_pin
> module /vmlinuz-2.6.38-rc8-konradxen+ placeholder
root=/dev/mapper/vg0-root ro quiet
> echo ''Chargement du disque me''moire initial
...''
> module /initrd.img-2.6.38-rc8-konradxen+
> }
>
> verify it works by typing :
> xentop
>
> if it don''t :
>
> ls /proc/xen/
> you should see :
> capabilities privcmd xenbus
> if not : add this line in /etc/fstab :
> xenfs /proc/xen xenfs defaults 0 1
> and execute
> mount -a
>
> if /dev/xen/evtchn doesn''t exists add this line in /etc/modules
> xen-evtchn
> and execute
> modprobe xen-evtchn
>
> if there''s no process xend
> udate-rc.d xend defaults
> /etc/init.d/xend/start
>
> For DomUs : well it depends on what kind of DomU you want.
>
> I didn''t use a manager to create DomUs, but directly made the
config
> files ( you have to put them in /etc/xen ).
> Here''s two example :
>
> pvops : /etc/xen/p2p.cfg
>
> name = "p2p"
> kernel = "vmlinuz-2.6.38-rc6-lio"
> ramdisk = "initrd.img-2.6.38-rc6-lio"
> root = "/dev/mapper/pvops-root"
> memory = "512"
> #disk = [ ''phy:vg0/p2p,sda,w'' ,
''phy:/dev/loop0,ioemu:hdc:cdrom,r'' ]
> disk = [ ''phy:vg0/p2p,xvda,w'' ,
''phy:vg0/mmd,xvdb1,w'' ]
> #boot = ''c''
> vif = [ ''bridge=eth0'' ]
> vfb = [ ''type=vnc,vnclisten=0.0.0.0'' ]
> keymap = ''fr''
> serial = ''pty''
> vcpus = 2
> on_reboot = ''restart''
> on_crash = ''restart''
>
> full virtualized host ( the same DomU ) :
>
> name = "p2p"
> kernel = ''/usr/lib/xen/boot/hvmloader''
> builder = ''hvm''
> device_model = ''/usr/lib/xen-4.0/bin/qemu-dm''
> memory = "512"
> #disk = [ ''phy:vg0/p2p,xvda,w'' ,
''phy:/dev/loop0,ioemu:hdc:cdrom,r'' ]
> disk = [ ''phy:vg0/p2p,xvda,w'' ,
''phy:vg0/mmd,xvdb1,w'' ]
> boot = ''c''
> vif = [ ''bridge=eth0'' ]
> vfb = [ ''type=vnc,vnclisten=0.0.0.0'' ]
> keymap = ''fr''
> serial = ''pty''
> vcpus = 2
> on_reboot = ''restart''
> on_crash = ''restart''
>
> If you want to install from an iso :
>
> mount the iso on a loop device :
> losetup /dev/loop0 /root/debian-sq-di-rc1-amd64-netinst.iso
> add it to your config file (the commented line )
> change boot=''c'' to by boot=''d''
> after the install remove it from the config and unmount it :
> losetup -d /dev/loop0
>
> to launch a vm :
> xm create p2p.cfg
> to hard stop it ( better to halt in the guest ) :
> xm destroy p2p.cfg
>
> _Note for pvops :_
>
> You have to use a xen kernel and initrd that you put in /boot of Dom0
> ( you can use the one from Dom0 too )
> You just have to copy /lib/modules/<kernel-version> into the guest
> As you can see i used lvm for disk devices the full path is
> /dev/vg0/p2p, you can remove /dev for devices ( i m not sure it''s
> mandatory )
> if you want to connect to the console change this line in inittab :
> 1:2345:respawn:/sbin/getty 38400 tty1
> by
> 1:2345:respawn:/sbin/getty 38400 hvc0
> you will be able to see wat''s hapenning by using
''-c'' option on boot
> or ''xm console p2p'' after
>
>
> _if you want to make lvm or partitions in the guest :_
>
> create a dos table and the partitions :
> fdisk -l /dev/vg0/p2p
> Device Boot Start End Blocks Id
System
> /dev/vg0/p2p1 1 61 487424 82 Linux
swap / Solaris
> /dev/vg0/p2p2 * 61 1045 7899136 8e Linux LVM
>
> _if you want to use debootstrap to install on those partitions : _
>
> here we use losetup again :
> rmmod loop
> modprobe loop max_part=63
> losetup /dev/loop0 /dev/vg0/p2p
>
> you will now have :
> /dev/loop0p1
> /dev/loop0p2
>
> pvcreate /dev/loop0p2
> vgcreate pvops /dev/loop0p2
> vgscan
> vgchange -ay ( maybe unecessary the first time because there no lv yet )
>
> create your logical volumes and mount your logical volumes for use
> with debootstrap
> exemple :
> mount /dev/pvops/root /mnt/chroot
> cd /mnt/chroot
> mkdir usr var dev proc home tmp sys
> mount /dev/pvops/var /mnt/chroot/var
> mount /dev/pvops/usr /mnt/chroot/usr
> mount /dev/pvops/home /mnt/chroot/home
> mount /dev/pvops/tmp /mnt/chroot/tmp
> mount -o bind /proc /mnt/chroot/proc
> mount -o bind /dev /mount/chroot/dev
> mount -o bind /dev/pts /mount/chroot/dev/pts
> mount -o bind /dev/shm /mount/chroot/dev/pts
> mount -o bind /sys /mount/chroot/sys
>
> install with debootstrap ( see manual/howto )
> cp -rp /lib/modules/<kernel-version>
/mnt/chroot/lib/modules/<kernel-version>
> chroot /mnt/chroot
> configure :
> /etc/network/interfaces
> /etc/fstab
> /etc/hosts
> /etc/resolv.conf
> /etc/hostname
> /etc/inittab ( for hvc0 )
>
> exit
> umount all your partitions
> vgchange -an pvops
> losetup -d /dev/loop0
>
> and boot the vm :
> cd /etc/xen
> xm create p2p.cfg -c
>
>
> _Note for full virtualized host : _
>
> You must have a complete working system on the guest filesystem (
> kernel, grub, etc, ... )
>
> _Note for both : _
>
> the disk devices created appears as xvda ,xvdb, etc
> you can add a filesystem as a partition if you want : ( see xvdb1 in
> the config )
>
> if you use vnc it will increment the port from 9001 as you add VMs,
> you connect to it by using Dom0 IP
> you call also use the extra options vncdisplay=10 ( for port 9010 )
>
> you can set a vnc password for a specific vm : vncpasswd=idontknow
> full exemple :
> vfb = [
''type=vnc,vnclisten=0.0.0.0,vncdisplay=10,vncpasswd=idontknow''
]
> if you want to mount the same fs in different DomUs ( for clustered
> filesystems ) add ''!'' in the config :
''phy:vg0/mmd,xvdb1,w*!*''
>
> The end.
>
> I thought it was short...
>
>
>
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