我使用以下命令检查libvirtd状态，但出现错误：
[root@ha-node1 nova]# systemctl status libvirtd.service
● libvirtd.service - Virtualization daemon
Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2017-08-03 00:09:05 CST; 25min ago
Docs: man:libvirtd(8)
http://libvirt.org
Main PID: 100447 (libvirtd)
CGroup: /system.slice/libvirtd.service
└─100447 /usr/sbin/libvirtd --listen
Aug 03 00:09:05 ha-node1 libvirtd[100447]: libvirt version: 1.2.17, package: 13.el7 (CentOS BuildSystem <http://bugs.centos.org>, 2015-11-20-16:24:10, worker1.bsys.centos.org)
Aug 03 00:09:05 ha-node1 libvirtd[100447]: Module /usr/lib64/libvirt/connection-driver/libvirt_driver_lxc.so not accessible
Aug 03 00:09:05 ha-node1 systemd[1]: Started Virtualization daemon.
Aug 03 00:11:34 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:14:00 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:16:07 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:18:13 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:20:20 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:22:38 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
Aug 03 00:23:52 ha-node1 libvirtd[100447]: End of file while reading data: Input/output error
快照如下，您可以清楚地看到错误。