qemu: aarch64 + ubuntu image
Working example
0.Prepare
创建临时目录，后续所有操作在此目录进行
mkdir -p ~/tmp/qemu-test
cd ~/tmp/qemu-test
1.安装qemu
ubuntu可以使用apt install.
通用的方式从源代码进行编译：
wget https://download.qemu.org/qemu-7.0.0.tar.xz
tar xvJf qemu-7.0.0.tar.xz
cd qemu-7.0.0
# 如果出现python相关错误，使用./configure --python=/usr/local/bin/python3
./configure
make
# 将编译好的文件复制到~/installed/qemu-7.0.0/bin
mkdir -p ~/installed/qemu-7.0.0/bin
cp -R ~/tmp/qemu-test/qemu-7.0.0/build ~/installed/qemu-7.0.0/bin
export PATH=$PATH:~/installed/qemu-7.0.0/bin
https://www.qemu.org/download/
2.下载资源
cd ~/tmp/qemu-test
curl -sLo QEMU_EFI_2.fd https://github.com/rohan-qemu/firmware/raw/master/bios/QEMU_EFI.fd
wget https://cloud-images.ubuntu.com/releases/22.04/release/ubuntu-22.04-server-cloudimg-arm64.img
# 备份ubuntu-22.04-server-cloudimg-arm64.img
# 后面会被qemu修改
cp ubuntu-22.04-server-cloudimg-arm64.img ubuntu-22.04-server-cloudimg-arm64.img.orig
bios
https://futurewei-cloud.github.io/ARM-Datacenter/qemu/how-to-launch-aarch64-vm/
# download QEMU_EFI.fd
# borrow from https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4
wget https://releases.linaro.org/components/kernel/uefi-linaro/latest/release/qemu64/QEMU_EFI.fd
3.生成img
qemu-img create ubuntu-image.img 20G
生成user-data image
https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4
cat > cloud.txt <<'EOF'
#cloud-config
users:
- name: oznu
ssh-authorized-keys:
- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC...
sudo: ['ALL=(ALL) NOPASSWD:ALL']
groups: sudo
shell: /bin/bash
EOF
# cloud-localds: apt install cloud-image-utils
cloud-localds --disk-format qcow2 user-data-qcow2.img cloud.txt
4.使用virt-customize更改img的password
注意：如果你没有ubuntu环境，你可以使用virtualbox安装ubuntu虚拟机之后执行这个命令
https://serverascode.com/2018/06/26/using-cloud-images.html
# 安装: sudo apt install guestfs-tools
sudo virt-customize -a ubuntu-22.04-server-cloudimg-arm64.img --root-password password:1111
注: --root-password还有file:SOMEFILE的格式。
5. 启动
qemu-system-aarch64 \
-nographic \
-machine virt \
-m 1024M \
-cpu cortex-a57 \
-bios ./qemu-7.0.0/QEMU_EFI_2.fd \
-device virtio-blk-device,drive=image \
-drive if=none,file=ubuntu-22.04-server-cloudimg-arm64.img,id=image \
-device virtio-blk-device,drive=cloud \
-drive if=none,file=user-data-qcow2.img,id=cloud \
-device virtio-blk-device,drive=hd1 \
-drive if=none,file=ubuntu-image.img,id=hd1,format=raw \
-net user,id=user0,hostfwd=tcp::30022-:22 \
-net nic \
-L ~/installed/qemu-7.0.0/pc-bios/ \
-vnc :3
如果报错找不到efi，添加-L ~/installed/qemu-7.0.0/pc-bios/, 注意目录指向你的安装目录.
如果界面卡在EFI stub这里，请确保QEMU_EFI_2.fd不是默认的qemu自带的文件，而是前面下载的内容。
5.使用root登录，密码:1111
使用ssh登录
证书
在虚拟机上，更改/etc/ssh/sshd_config, 使其包含PubkeyAuthentication yes
然后重启服务：
vim /etc/ssh/sshd_config
...
sudo systemctl restart sshd.service
生成key/pub密钥对，然后将pub复制到~/.ssh/authroized_keys中:
ssh-keygen -t rsa -f ~/.ssh/id_rsa_qemu
cat ~/.ssh/id_rsa_qemu.pub >> ~/.ssh/authorized_keys
将key复制到host上，改变其权限，然后登录：
...copy the content to ~/.ssh/id_rsa_qemu...
chmod g-rw ~/.ssh/id_rsa_qemu
chmod o-rw ~/.ssh/id_rsa_qemu
ssh -p 30022 -i ~/.ssh/id_rsa_qemu [email protected]
复制文件：
scp -p 30022 -i ~/.ssh/id_rsa_qemu [email protected]
密码（不行）
在虚拟机上，更改/etc/ssh/sshd_config, 使其包含PasswordAuthentication yes
然后重启服务：
sudo systemctl restart sshd.service
登录：
ssh -vvv -p 30022 [email protected]
挂载目录
qemu-system-aarch64 \
...
-virtfs local,path=/Users/xhd2015,mount_tag=host0,security_model=mapped,id=host0 \
...
Historical Reference
Setup
https://futurewei-cloud.github.io/ARM-Datacenter/qemu/how-to-launch-aarch64-vm/
# download QEMU_EFI.fd
# borrow from https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4
wget https://releases.linaro.org/components/kernel/uefi-linaro/latest/release/qemu64/QEMU_EFI.fd
Setup 2(latest)
https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4
Ubuntu Boot
https://askubuntu.com/questions/281763/is-there-any-prebuilt-qemu-ubuntu-image32bit-online/1081171#1081171
ssh-able
https://gist.github.com/oznu/ac9efae7c24fd1f37f1d933254587aa4
qemu-system-aarch64 -m 1024 -smp 2 -cpu cortex-a57 -M virt -nographic \
-pflash flash0.img \
-pflash flash1.img \
-drive if=none,file=ubuntu-16.04-server-cloudimg-arm64-uefi1.img,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-drive if=none,id=cloud,file=cloud.img \
-device virtio-blk-device,drive=cloud \
-netdev user,id=user0 -device virtio-net-device,netdev=user0 \
-redir tcp:2222::22
-redir已经不再支持, 使用hostfwd=hostip:hostport-guestip:guestport:
qemu-system-aarch64 -m 1024 -smp 2 -cpu cortex-a57 -M virt -nographic \
-pflash flash0.img \
-pflash flash1.img \
-drive if=none,file=ubuntu-16.04-server-cloudimg-arm64-uefi1.img,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-drive if=none,id=cloud,file=cloud.img \
-device virtio-blk-device,drive=cloud \
-netdev user,id=user0,hostfwd=tcp::30022-:22 \
-device virtio-net-device,netdev=user0 \
-net nic
root password
https://serverascode.com/2018/06/26/using-cloud-images.html
sudo virt-customize -a bionic-server-cloudimg-amd64.img --root-password password:coolpass
注: --root-password还有file:SOMEFILE的格式。
ubuntu 2022 img
https://cloud-images.ubuntu.com/releases/22.04/release/
Error:failed to find romfile “efi-virtio.rom”
添加-L ~/installed/qemu-7.0.0/pc-bios/
qemu-system-aarch64 -nographic -machine virt,gic-version=max -m 512M -cpu max -smp 4 \
-L ~/installed/qemu-7.0.0/pc-bios/ \
-netdev user,id=vnet,hostfwd=:127.0.0.1:0-:22 -device virtio-net-pci,netdev=vnet \
-drive file=ubuntu-image.img,if=none,id=drive0,cache=writeback -device virtio-blk,drive=drive0,bootindex=0 \
-drive file=mini.iso,if=none,id=drive1,cache=writeback -device virtio-blk,drive=drive1,bootindex=1 \
-drive file=flash0.img,format=raw,if=pflash -drive file=flash1.img,format=raw,if=pflash
退出qemu
C-a然后x