https://docs.01.org/clearlinux/latest/get-started/virtual-machine-install/kvm.html#install-qemu-kvm
====== 初始安裝 ======
1,下載
    -clear-34500-kvm.img.xz 
    -OVMF.fd 
    -OVMF_CODE.fd 
    -OVMF_VARS.fd 
    -start_qemu.sh \\
2,unxz clear-34500-kvm.img.xz \\
3,chmod u+x start_qemu.sh \\
4,./start_qemu.sh clear-34500-kvm.img \\
5,改好 ssh, X11forwarding.
<code>
# systemctl edit sshd.socket
  [Socket]
  ListenStream=
  ListenStream=22
# systemctl daemon-reload
# systemctl restart sshd.socket
# vi /etc/ssh/sshd_config
  PermitRootLogin yes
  AllowTcpForwarding yes
  X11UseLocalhost yes
  X11DisplayOffset 10
  X11Forwarding yes
  subsystem sftp /usr/libexec/sftp-server
</code>
在 host 可以看到 qemu 的 clearOS 的 sshd listen on 10022:<code>
05-11 21:07 [root@kiosk430 ~]# netstat -anlpt |grep qemu
tcp        0      0 0.0.0.0:10022           0.0.0.0:*               LISTEN      458036/qemu-system- 
tcp        0      0 0.0.0.0:12375           0.0.0.0:*               LISTEN      458036/qemu-system- </code>
在 start-qemu.sh 中定義了 port 轉接：<code>
  -netdev user,id=mynet0,hostfwd=tcp::${VMN}0022-:22,hostfwd=tcp::${VMN}2375-:2375 \</code>
在 host 可以用 10022 連接 kvm 的 :22
  [feuer@kiosk430 ClearOS]$ ssh -p 10022 root@127.0.0.1
在 vm 中使用 "poweroff" 將系統關機。\\
----
====== 圖形界面 ======
修改 start_qemu.sh<file>
qemu-system-x86_64 \
    -enable-kvm \

{UEFI_BIOS} \
    -smp sockets=1,cpus=4,cores=2 -cpu host \
    -m 4096 \
    -vga qxl \
    -nographic \
    -spice port=5924,disable-ticketing \
    -usb \
    -device usb-tablet,bus=usb-bus.0 \
    -drive file="$IMAGE",if=virtio,aio=threads,format=raw \
    -netdev user,id=mynet0,hostfwd=tcp::${VMN}0022-:22,hostfwd=tcp::${VMN}2375-:2375 \
    -device virtio-net-pci,netdev=mynet0 \
    -debugcon file:debug.log -global isa-debugcon.iobase=0x402 $@</file>

重新下載開機檔案：<file>
rm -v OVMF*.fd
curl -O https://cdn.download.clearlinux.org/image/OVMF.fd
curl -O https://cdn.download.clearlinux.org/image/OVMF_CODE.fd
curl -O https://cdn.download.clearlinux.org/image/OVMF_VARS.fd
</file>
擴充 vm 硬碟空間：
  [feuer@kiosk430 ClearOS]$ qemu-img resize -f raw clear-34500-kvm.img +10G
  Image resized.
啟動 vm:
  ./start_qemu_spice.sh clear-34500-kvm.img
在 host 執行 "ip a" 可以看到 vm 的 ip:<code>
  6: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:25:d0:b7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever</code>

執行 remote-viewer spice 來進入 vm :
  [feuer@kiosk430 ClearOS]$ remote-viewer spice://192.168.122.1:5924

===== Resize the last partition of the virtual disk =====

登入，在 vm 中執行："swupd bundle-add storage-utils"

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===== Install GDM =====
執行 "swupd bundle-add desktop-autostart"
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在 vm 中執行 "reboot" ，就會開啟 gdm 登入。
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