CentOS 7 virt-manager 无法连接本地的hypervisor

Linux操作系统 : CentOS 7 Gnome Desktop

问题描述：

CentOS 7 下使用yum install virt-manager之后，使用virt-manager无法连接本地的hypervisor。

使用lsmod 可以查看到kvm-intel模块已经加入至内核中。

使用命令行工具virsh

[root@localhost qemu]# virsh define CCnode.xml

error: failed to connect to the hypervisor

error: no valid connection

error: no connection driver available for <null>

error: Failed to reconnect to the hypervisor

重启libvirtd服务，查看日志记录/var/log/messages

Aug 10 11:15:57 localhost systemd: Starting Virtualization daemon...

Aug 10 11:15:57 localhost journal: libvirt version: 1.2.8, package: 16.el7_1.3 (CentOS BuildSystem <http://bugs.centos.org>, 2015-05-12-20:12:58, worker1.bsys.centos.org)

Aug 10 11:15:57 localhost journal: failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so: symbol dm_task_get_info_with_deferred_remove, version Base not defined in file libdevmapper.so.1.02 with link time reference

Aug 10 11:15:57 localhost journal: failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so: undefined symbol: virStorageFileCreate

Aug 10 11:15:57 localhost journal: Module /usr/lib64/libvirt/connection-driver/libvirt_driver_lxc.so not accessible

Aug 10 11:15:57 localhost systemd: Started Virtualization daemon.

日志记录错误关键部分：

journal: failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so: symbol dm_task_get_info_with_deferred_remove, version Base not defined in file libdevmapper.so.1.02 with link time reference

Aug 10 11:15:57 localhost journal: failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so: undefined symbol: virStorageFileCreate

经过Google，解决此问题只需更新软件包

查看包版本：

yum info device-mapper-libs         

更新软件包：

yum update device-mapper-libs       

参考：

• https://bugzilla.redhat.com/show_bug.cgi?id=1164773
• https://bugzilla.redhat.com/show_bug.cgi?id=842068