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virsh -c qemu:///system edit 来修改虚拟机配置virsh -c qemu:///system start 来启动虚拟机来测试配置是否生效
https://unix.stackexchange.com/questions/591252/libvirt-how-to-pass-qemu-command-line-args-now-libvirt-schemas-is-404https://libvirt.org/drvqemu.html#qemucommand