我在我的 ARM Chromebook 上运行 Debian bookworm，型号为“xe303c12”，并且我已经重新编译了内核以启用 KVM，所以现在我的系统听起来像这样：
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
$ uname -a
Linux chromarietto 5.4.244-stb-cbe
#8 SMP PREEMPT Sat Aug 19 22:19:32 UTC 2023 armv7l GNU/Linux
$ uname -r
5.4.244-stb-cbe
$ kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
$ qemu-system-arm --version
QEMU emulator version 5.1.0 (v5.1.0-dirty)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
$ python3 --version
Python 3.11.2
我已经从源代码安装了 libvirt 9.7.0、qemu 5.1 和 virt-manager，最终目标是能够将 qemu、kvm 和 libvirt 连接在一起，为 Arm 32 位虚拟化 FreeBSD 13.2。如果你问我为什么我从源代码重新编译了所有内容，我的答案会很复杂，但简而言之，由于某种未知的原因，它会报告如下错误：
"Warning : Failed to set up UEFI /
The Libvirt version does not support UEFI /
Install options are limited"
所以，我走了最复杂的路线：从头开始编译所有内容。
下面我把我所遵循的整个过程贴出来，这样你就可以很好地理解哪里出了问题。
$ apt build-dep libvirt
$ git clone https://github.com/libvirt/libvirt.git
Cloning into 'libvirt'...
$ cd libvirt
$ meson setup build
$ ninja -C build
$ ninja -C build install
$ which virsh
/usr/local/bin/virsh
$ which libvirtd
/usr/local/sbin/libvirtd
$ apt install libgtk-3-dev libpulse-dev libgbm-dev libspice-protocol-dev \
libspice-server-dev libusb-1.0-0-dev libepoxy-dev libfdt-dev
$ git clone -b v5.1.0 http://git.qemu.org/qemu.git
$ cd qemu-v5.1.0
$ git submodule add -f https://git.kernel.org/pub/scm/utils/dtc/dtc.git dtc
$ ./configure --disable-werror --target-list=arm-softmmu \
--enable-opengl --enable-gtk --enable-kvm --enable-guest-agent \
--enable-spice --audio-drv-list="oss pa" --enable-libusb \
--enable-trace-backend=simple --enable-debug
$ make
$ make install
$ git clone https://github.com/virt-manager/virt-manager.git
$ apt install gobject-introspection libosinfo-1.0-0 libosinfo-1.0-dev \
gir1.2-libosinfo-1.0 libvirt-glib-1.0-dev
$ cd virt-manager
$ ./setup.py configure --prefix=/usr/local
$ sudo ./setup.py install
$ sudo usermod -a -G libvirt root
$ sudo usermod -a -G libvirtd root
$ sudo usermod -a -G libvirt-qemu libvirt-qemu
$ sudo usermod -a -G libvirt marietto
$ sudo adduser libvirt-qemu
$ sudo groupadd --system libvirt
$ sudo groupadd --system libvirt-qemu
$ sudo newgrp libvirt-qemu
$ newgrp libvirt
$ /usr/local/sbin# libvirtd &
[1] 2875
$ /usr/local/sbin# virtqemud &
info : libvirt version: 9.7.0 info :
hostname: chromarietto error : virPidFileAcquirePathFull:409
Failed to acquire pid file : /var/local/run/libvirt/qemu/driver.pid
Resource temporarily unavailable error : virStateInitialize:672 :
Initialization of QEMU state driver failed
Failed to acquire pid file : /var/local/run/libvirt/qemu/driver.pid
Resource temporarily unavailable error : daemonRunStateInit:617 :
Driver state initialization failed
$ /usr/local/sbin# ps ax | grep libvirt
2875 pts/0 Sl 0:00 libvirtd
$ /usr/local/sbin# ps ax | grep virtqemu
nothing
If I do the opposite way :
$ /usr/local/sbin# virtqemud &
$ /usr/local/sbin# ps ax | grep virtqemu
3041 pts/0 Sl 0:00 virtqemud
$ /usr/local/sbin# libvirtd &
info : libvirt version: 9.7.0 info :
hostname: chromarietto
error : virPidFileAcquirePathFull:409
Failed to acquire pid file : /var/local/run/libvirt/qemu/driver.pid
Resource temporarily unavailable
virStateInitialize:672 : Initialization of QEMU state driver failed
Failed to acquire pid file : /var/local/run/libvirt/qemu/driver.pid
Resource temporarily unavailable daemon
RunStateInit:617 : Driver state initialization failed
$ /usr/local/sbin# ps ax | grep virtqemu
3041 pts/0 Sl 0:00 virtqemud
$ /usr/local/sbin# ps ax | grep libvirt
nothing
简而言之：当我启动 libvirt 然后启动 virtqemu 时，第一个不会自行关闭，但第二个会自行关闭；当我启动 virtqemud 然后启动 libvirt 时，第一个不会自行关闭，但第二个会自行关闭；所以，这两个进程彼此不兼容，但它们应该同时运行，否则 virt-manager 将根本无法工作，我将无法运行任何虚拟机。