diff --git a/Software/System/Virtualization/Xen/Xen_安装与配置.md b/Software/System/Virtualization/Xen/Xen_安装与配置.md new file mode 100644 index 0000000..7e0d112 --- /dev/null +++ b/Software/System/Virtualization/Xen/Xen_安装与配置.md @@ -0,0 +1,272 @@ +# Xen 安装与配置 + +Xen 分为 Xen Hypervisor、Dom 0 和 Dom U。针对 Xen Hypervisor 需要提供引导配置，针对 Dom U 需要提供虚拟机配置。 + +## 安装 + +在 ArchLinux/Manjaro 上通过 yaourt 进行安装。 + +```sh +yaourt -S xen +``` + +## 参考引导配置文件 + +在 ArchLinux/Manjaro 上安装完 Xen 后，在 /etc/grub.d/09_xen 为 Xen Hypervisor 的参考引导配置文件（基于 Grub），内容如下： + +```sh +#!/usr/bin/env bash + +## +## grub-mkconfig helper script specific to Arch Linux +## Contributed by "Keshav Amburay" +## Updated on 08 February 2014 +## +## Script based on do_grub_config() function in Arch Linux Archboot ISO Installer/Setup script +## Some parts taken from /etc/grub.d/10_linux script shipped by GRUB(2) upstream +## +## This script can be freely distributed and/or modified +## under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This script is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## + +## Adapted for use with the xen AUR package, to ensure feature comparity +## Modified by "David Sutton" + +_FUNC_GRUB_FILE_PRESENT() { + + [[ -z "${GRUB_PLATFORM}" ]] && GRUB_PLATFORM="x86" + + if [[ "${GRUB_PLATFORM}" == "x86" ]]; then + check="--is-x86-linux32" + elif [[ "${GRUB_PLATFORM}" == "i386-xen-pae" ]]; then + check="--is-i386-xen-pae-domu" + elif [[ "${GRUB_PLATFORM}" == "x86_64-xen" ]]; then + check="--is-x86_64-xen-domu" + else + check="--is-${GRUB_PLATFORM}-linux" + fi + + case "${GRUB_PLATFORM}" in + x86) + list="$(for i in "${GRUB_ROOT}"/boot/vmlinuz-linux* ; do + if grub_file_is_not_garbage "${i}" && "${grub_file}" ${check} "${i}" ; then echo -n "${i} " ; fi + done)" ;; + *) + list="$(for i in "${GRUB_ROOT}"/boot/vmlinuz-linux* ; do + if grub_file_is_not_garbage "${i}" && "${grub_file}" ${check} "${i}" ; then echo -n "${i} " ; fi + done)" ;; + esac +} + +set -e + +prefix="/usr" +exec_prefix="${prefix}" +datarootdir="/usr/share" +datadir="${datarootdir}" +sysconfdir="/etc" + +. "${datarootdir}/grub/grub-mkconfig_lib" + +. "${sysconfdir}/default/grub" + +export XEN_HYPERVISOR_CMDLINE="xsave=1" +export XEN_LINUX_CMDLINE="console=tty0" + +[[ -r "${sysconfdir}/xen/grub.conf" ]] && . "${sysconfdir}/xen/grub.conf" + +[[ -z "${XEN_LINUX_CMDLINE_OVERRIDE}" ]] && XEN_LINUX_CMDLINE_OVERRIDE="0" + +export TEXTDOMAIN="grub" +export TEXTDOMAINDIR="${datarootdir}/locale" + +CLASS="--class xen --class arch-linux --class arch --class gnu-linux --class gnu --class os" + +[[ "${grub_file}" != "" ]] && _FUNC_GRUB_FILE_PRESENT + +BOOT_PART_FS_UUID="$(${grub_probe} --target="fs_uuid" "/boot" 2>/dev/null)" +BOOT_PART_HINTS_STRING="$(${grub_probe} --target="hints_string" "/boot" 2>/dev/null || true)" +BOOT_PART_FS="$(${grub_probe} --target="fs" "/boot" 2>/dev/null)" + +ROOT_PART_GRUB_DEVICE="$(${grub_probe} --target=device / || true)" +ROOT_PART_FS="$(${grub_probe} --device ${ROOT_PART_GRUB_DEVICE} --target=fs 2> /dev/null || echo "unknown")" + +if [[ "${GRUB_LINUX_ROOT_DEVICE}" == "" ]]; then + + case "${ROOT_PART_FS}" in + btrfs) + rootsubvol="$(make_system_path_relative_to_its_root /)" + rootsubvol="${rootsubvol#/}" + if [[ "${rootsubvol}" != "" ]]; then + GRUB_LINUX_ROOT_DEVICE="subvol=${rootsubvol}" + fi + ;; + zfs) + rpool="$(${grub_probe} --device ${GRUB_DEVICE} --target=fs_label 2>/dev/null || true)" + bootfs="$(make_system_path_relative_to_its_root / | sed -e "s,@$,,")" + GRUB_LINUX_ROOT_DEVICE="ZFS=${rpool}${bootfs}" + ;; + esac + + if [[ "${GRUB_DEVICE_UUID}" == "" ]] || \ + [[ "${GRUB_DISABLE_LINUX_UUID}" == "true" ]] || \ + [[ ! -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" ]] || \ + uses_abstraction "${GRUB_DEVICE}" lvm ; then + GRUB_LINUX_ROOT_DEVICE="${GRUB_DEVICE}" + else + GRUB_LINUX_ROOT_DEVICE="UUID=${GRUB_DEVICE_UUID}" + fi +fi + +[[ "${GRUB_LINUX_PARAMS}" == "" ]] && GRUB_LINUX_PARAMS="${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}" +if [[ "${XEN_LINUX_CMDLINE_OVERRIDE}" == "0" ]]; then + GRUB_LINUX_PARAMS="${GRUB_LINUX_PARAMS} ${XEN_LINUX_CMDLINE}" +else + GRUB_LINUX_PARAMS="${XEN_LINUX_CMDLINE}" +fi + +xen_list=`for i in /boot/xen-*.gz /xen-*.gz ; do + if grub_file_is_not_garbage "$i" ; then echo -n "$i "; fi +done` + +while [ "x$xen_list" != "x" ] ; do + xen=`version_find_latest $xen_list` + echo "Found Xen hypervisor image: $xen" >&2 + XEN_BASENAME=`basename $xen` + XEN_VERSION=`echo $XEN_BASENAME | sed -e "s,^[^0-9]*-,,g" | sed -e "s,.gz,,g"` + + for _KERNEL_ in ${list} ; do + + echo "Found linux image: ${_KERNEL_}" >&2 + + basename="$(basename "${_KERNEL_}")" + dirname="$(dirname "${_KERNEL_}")" + REAL_DIR="$(make_system_path_relative_to_its_root "${dirname}")" + + _KERNEL_FILE_="$(echo ${_KERNEL_} | sed 's,/boot/,,g')" + _KERNEL_PKG_="pkg-$(echo ${_KERNEL_FILE_} | sed 's,vmlinuz-,,g')" + + _INITRAMFS_="${_KERNEL_FILE_/vmlinuz-/initramfs-}.img" + + if [[ -e "/boot/${_INITRAMFS_}" ]]; then + + echo "Found initramfs image: /boot/${_INITRAMFS_}" >&2 + + cat << EOF + +menuentry "Xen ${XEN_VERSION} / Arch Linux ${_KERNEL_PKG_} kernel" ${CLASS} { + $(save_default_entry) + if [ x\$feature_all_video_module = xy ]; then + insmod all_video + fi + set gfxpayload=keep + insmod ${BOOT_PART_FS} + if [ x\$feature_platform_search_hint = xy ]; then + search --no-floppy --fs-uuid --set=root ${BOOT_PART_HINTS_STRING} ${BOOT_PART_FS_UUID} + else + search --no-floppy --fs-uuid --set=root ${BOOT_PART_FS_UUID} + fi + echo '$(printf "Loading Xen %s ..." ${XEN_VERSION})' + multiboot2 ${REAL_DIR}/${XEN_BASENAME} ${XEN_HYPERVISOR_CMDLINE} + echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel ...' + module2 ${REAL_DIR}/${_KERNEL_FILE_} root=${GRUB_LINUX_ROOT_DEVICE} rw ${GRUB_LINUX_PARAMS} + echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel initramfs ...' + module2 ${REAL_DIR}/${_INITRAMFS_} +} + +EOF + fi + + _INITRAMFS_FALLBACK_="${_KERNEL_FILE_/vmlinuz-/initramfs-}-fallback.img" + + if [[ -e "/boot/${_INITRAMFS_FALLBACK_}" ]]; then + + echo "Found fallback initramfs image: /boot/${_INITRAMFS_FALLBACK_}" >&2 + + cat << EOF + +menuentry "Xen ${XEN_VERSION} / Arch Linux ${_KERNEL_PKG_} kernel (fallback initramfs)" ${CLASS} { + $(save_default_entry) + if [ x\$feature_all_video_module = xy ]; then + insmod all_video + fi + set gfxpayload=keep + insmod ${BOOT_PART_FS} + if [ x\$feature_platform_search_hint = xy ]; then + search --no-floppy --fs-uuid --set=root ${BOOT_PART_HINTS_STRING} ${BOOT_PART_FS_UUID} + else + search --no-floppy --fs-uuid --set=root ${BOOT_PART_FS_UUID} + fi + echo '$(printf "Loading Xen %s ..." ${XEN_VERSION})' + multiboot2 ${REAL_DIR}/${XEN_BASENAME} ${XEN_HYPERVISOR_CMDLINE} + echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel ...' + module2 ${REAL_DIR}/${_KERNEL_FILE_} root=${GRUB_LINUX_ROOT_DEVICE} rw ${GRUB_LINUX_PARAMS} + echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel fallback initramfs ...' + module2 ${REAL_DIR}/${_INITRAMFS_FALLBACK_} +} + +EOF + fi + + if [[ ! -e "/boot/${_INITRAMFS_}" ]] && [[ ! -e "/boot/${_INITRAMFS_FALLBACK_}" ]]; then + cat << EOF + +menuentry "Xen ${XEN_VERSION} / Arch Linux ${_KERNEL_PKG_} kernel (no initramfs)" ${CLASS} { + $(save_default_entry) + if [ x\$feature_all_video_module = xy ]; then + insmod all_video + fi + set gfxpayload=keep + insmod ${BOOT_PART_FS} + if [ x\$feature_platform_search_hint = xy ]; then + search --no-floppy --fs-uuid --set=root ${BOOT_PART_HINTS_STRING} ${BOOT_PART_FS_UUID} + else + search --no-floppy --fs-uuid --set=root ${BOOT_PART_FS_UUID} + fi + echo '$(printf "Loading Xen %s ..." ${XEN_VERSION})' + multiboot2 ${REAL_DIR}/${XEN_BASENAME} ${XEN_HYPERVISOR_CMDLINE} + echo 'Loading Arch Linux ${_KERNEL_PKG_} kernel ...' + module2 ${REAL_DIR}/${_KERNEL_FILE_} root=${GRUB_LINUX_ROOT_DEVICE} rw ${GRUB_LINUX_PARAMS} +} + +EOF + fi + + done + + xen_list=`echo $xen_list | tr ' ' '\n' | grep -vx $xen | tr '\n' ' '` +done +``` + +## 一个简化的配置参考 + +一个简化的 Grup 引导配置文件如下，其中 xen-4.12.1.gz 为 Xen Hypervisor，vmlinuz-4.9-x86_64 为支持 Xen 的 Dom 0 Linux Kernel，initramfs-4.9-x86_64.img 为 RAM Disk。注意当前的根为“/boot”而非“/”。"xsave=1" "dom0_max_vcpus=1" "dom0_mem=1024M" 为 Xen Hypervisor，vmlinuz 的 Command Line Options。root=UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx rw quiet udev.log_priority=3 为 Dom 0 Kernel Command Line Options。 + +```sh +menuentry "Xen / Arch Linux kernel" --class manjaro --class gnu-linux --class gnu --class os { + savedefault + load_video + set gfxpayload=keep + insmod gzio + insmod part_msdos + insmod ext2 + set root='hd0,msdos1' + if [ x$feature_platform_search_hint = xy ]; then + search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx + else + search --no-floppy --fs-uuid --set=root xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx + fi + multiboot2 /xen-4.12.1.gz "xsave=1" "dom0_max_vcpus=1" "dom0_mem=1024M" + echo 'Loading kernel ...' + module2 /vmlinuz-4.9-x86_64 root=UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx rw quiet udev.log_priority=3 + echo 'Loading initial ramdisk ...' + module2 --nounzip /initramfs-4.9-x86_64.img +} +```