282 lines
9.9 KiB
Markdown
282 lines
9.9 KiB
Markdown
# 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
|
||
```
|
||
|
||
提示需要 83FE14C957E82BD9 密钥：
|
||
|
||
```sh
|
||
# 注意不要加 sudo
|
||
gpg --recv-keys 83FE14C957E82BD9
|
||
gpg --lsign-key 83FE14C957E82BD9
|
||
gpg --finger 83FE14C957E82BD9
|
||
```
|
||
|
||
## 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" <the ddoott ridikulus ddoott rat aatt geemmayil ddoott ccoomm>
|
||
## 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" <kantras - gmail com>
|
||
|
||
_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
|
||
}
|
||
```
|