buildroot如何挂载一个QCOW2的文件系统

[jasonzhang-jlq]

执行如下命令，buildroot能正常启动和登录
LD_LIBRARY_PATH=./host/lib ./host/csky-qemu/bin/qemu-system-riscv64 -M virt -kernel fw_jump.elf -device loader,file=Image,addr=0x80200000 -append "rootwait root=/dev/vda ro" -drive file=rootfs.ext2,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 -nographic -smp 1
在上述命令后，添加如下参数，目的是能在/dev/disk/by-uuid下有相应磁盘进行后续mount，但实际上没有
-drive format=qcow2,file=lava-guest.qcow2,if=virtio,media=disk,id=lavates
相同的参数，在fedora上能挂载成功
qemu-system-riscv64 -machine virt -cpu rv64 -nographic -net nic,model=virtio,macaddr=52:54:00:12:34:59 -net user -m 1024 -monitor none -smp 4 -m 2048 -object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-device,rng=rng0 -device virtio-blk-device,drive=hd0 -device virtio-net-device,netdev=usernet -netdev user,id=usernet,hostfwd=tcp::3333-:22 -bios Fedora-Developer-Rawhide-20200108.n.0-fw_payload-uboot-qemu-virt-smode.elf -drive format=raw,id=hd0,file=Fedora-Developer-Rawhide-20200108.n.0-sda.raw -drive format=qcow2,file=lava-guest.qcow2,media=disk,if=virtio,id=lavatest