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 on 28 May 2008