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MicroVM

  • 是什么？
    • QEMU 受 Firecracker 启发开发的一种机器类型
    • 最小化 - 不支持 PCI 和 ACPI
    • 适用于短期运行 Guest
  • QEMU microvm
# with Legacy
qemu-system-x86_64 -M microvm \
   -enable-kvm -cpu host -m 512m -smp 2 \
   -kernel vmlinux -append "earlyprintk=ttyS0 console=ttyS0 root=/dev/vda" \
   -nodefaults -no-user-config -nographic \
   -serial stdio \
   -drive id=test,file=test.img,format=raw,if=none \
   -device virtio-blk-device,drive=test \
   -netdev tap,id=tap0,script=no,downscript=no \
   -device virtio-net-device,netdev=tap0

# no Legacy
qemu-system-x86_64 \
   -M microvm,x-option-roms=off,pit=off,pic=off,isa-serial=off,rtc=off \
   -enable-kvm -cpu host -m 512m -smp 2 \
   -kernel vmlinux -append "console=hvc0 root=/dev/vda" \
   -nodefaults -no-user-config -nographic \
   -chardev stdio,id=virtiocon0 \
   -device virtio-serial-device \
   -device virtconsole,chardev=virtiocon0 \
   -drive id=test,file=test.img,format=raw,if=none \
   -device virtio-blk-device,drive=test \
   -netdev tap,id=tap0,script=no,downscript=no \
   -device virtio-net-device,netdev=tap0