VirtualBox中CentOS 8虚拟机部署OpenStack Yoga版Compute服务启动失败求助

我正在VirtualBox里的CentOS 8虚拟机上部署OpenStack Yoga版本的Compute服务，严格跟着官方安装指南操作，但启动相关服务时出现了错误。

我执行了以下命令查看服务状态：

systemctl status libvirtd.service openstack-nova-compute.service

得到的错误输出如下：

● libvirtd.service - Virtualization daemon
Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
Active: inactive (dead) since Fri 2023-11-03 21:17:08 MSK; 1min 22s ago
Docs: man:libvirtd(8)
      https://libvirt.org
Main PID: 2529 (libvirtd)
Tasks: 19 (limit: 32768)
Memory: 14.8M
CGroup: /system.slice/libvirtd.service
        └─2529 /usr/sbin/libvirtd --timeout 120

Nov 03 21:17:08 compute.openstack.local systemd[1]: Starting Virtualization daemon...
Nov 03 21:17:08 compute.openstack.local systemd[1]: Started Virtualization daemon.
Nov 03 21:17:08 compute.openstack.local libvirtd[2529]:36:36, )
Nov 03 21:17:08 compute.openstack.local libvirtd[2529]: hostname: compute.openstack.local
Nov 03 21:17:08 compute.openstack.local libvirtd[2529]: Unable to open /dev/kvm: No such file or directory

● openstack-nova-compute.service - OpenStack Nova Compute Server
Loaded: loaded (/usr/lib/systemd/system/openstack-nova-compute.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Fri 2023-11-03 21:17:09 MSK; 1min 20s ago
Process: 2575 ExecStart=/usr/bin/nova-compute (code=exited, status=203/EXEC)
Main PID: 2575 (code=exited, status=203/EXEC)

Nov 03 21:17:09 compute.openstack.local systemd[1]: openstack-nova-compute.service: Failed with result 'exit-code'.
Nov 03 21:17:09 compute.openstack.local systemd[1]: Failed to start OpenStack Nova Compute Server.
Nov 03 21:17:09 compute.openstack.local systemd[1]: openstack-nova-compute.service: Service RestartSec=100ms expired, scheduling restart.
Nov 03 21:17:09 compute.openstack.local systemd[1]: openstack-nova-compute.service: Scheduled restart job, restart counter is at 5.
Nov 03 21:17:09 compute.openstack.local systemd[1]: Stopped OpenStack Nova Compute Server.
Nov 03 21:17:09 compute.openstack.local systemd[1]: openstack-nova-compute.service: Start request repeated too quickly.
Nov 03 21:17:09 compute.openstack.local systemd[1]: openstack-nova-compute.service: Failed with result 'exit-code'.
Nov 03 21:17:09 compute.openstack.local systemd[1]: Failed to start OpenStack Nova Compute Server.

考虑到是在虚拟机里部署，我已经配置libvirt使用QEMU而非KVM，修改了/etc/nova/nova.conf文件的对应部分：

[libvirt]
# ...
virt_type = qemu

请问该如何解决这个启动失败的问题？

备注：内容来源于stack exchange，提问作者Alexander Klychevskiy