1.error:no hypervisor options were found ofr this connection
this usually means that qemu or kvm is not installed on your machine,or the kvm kernel modules are not loaded.
解决方法：开启bios虚拟化并加载modprobe kvm以及kvm_intel.
2.Unable to migrate guest: unsupported configuration: Domain requires KVM, but it is not available. Check that virtualization is enabled in the host BIOS, and host configuration is setup to load the kvm modules.
解决方法:方法同上.
3.Unable to migrate guest: Unable to allow access for disk path /img/musf-clone1-2-clone.img: No such file or directory
解决方法:迁移与被迁移主机的共享目录一定要一样.即server1目录为/img server2目录也要为/img.
4.Unable to migrate guest: unable to connect to server at ‘kvm3:49153‘: Connection refused
解决方法:1.开启防火墙上端口或关闭防火墙.
2.在virt-manager的迁移中添加迁移端口.
5.Unable to migrate guest: Timed out during operation: cannot acquire state change lock
解决方法:...求科普..而且是大部分虚拟机都可以迁移就一个不成..找不到北ing...
1.虚拟机起不来的情况下.使用kill -9 `ps -ef|grep ‘libvirtd --daemon‘|grep -v grep |awk ‘{print $2}‘`杀死libvirt --daemon进程并重启libvirtd --daemon
6.error: Unable to initialize network sockets. Check /var/log/messages or run without --daemon for more info.
事件还原:使用virtual host模式安装完centos，并且yum安装好vdsm之后，开启vdsm不能,开启libvirtd不能。显示该错误如上。
解决方法:进入/etc/libvirt/libvirtd.conf修改listen_tls为0即可.
7.Host 25 installation failed. SSH command failed while executing at host ‘root@192.168.20.25‘, refer to logs for further information。
事件还原：安装vdsm之后从ovirt管理界面加入当前vdsm主机时出现错误。原因之一为vdsm-cli未安装。安装即可。
8.在ovirt-engine中添加data/nfs作为存储域时并不能成功。
解决方法：1.可以试试查看一下将要共享的文件夹权限是否是vdsm：kvm。若不是使用chown -R命令即可。
authentication name
9.vdsm在加入ovirt时会使用sasl再次加密libvirt,所以使用virt-manager连接libvirt时需要输入 authentication name & passowrd。
解决方法：使用saslpassword2 -a命令创建另一组认证名和密码用于virt-manager对libvirt的访问即可。
命令格式： saslpasswd2 -a libvirt 用户名
10.部分主机创建虚拟机成功,开启虚拟机时出现error...
VM CentOS6.3T is down. Exit message: internal error Process exited while reading console log output: bind(unix:/var/lib/libvirt/qemu/channels/CentOS6.3T.com.redhat.rhevm.vdsm): Permission denied chardev: opening backend "socket" failed
由于../channels这个文件夹的权限是vdsm qemu。root用户可能不能读取并创建其中的文件。我采用的方法是手动在qemu.conf中注释掉.user = root 以及 group = root并重启libvirtd。
之后出现错误：VM CentOS6.3T is down. Exit message: internal error client socket is closed.
还有VM test is down. Exit message: cannot open file ‘/rhev/data-center/78e07dee-36bc-439b-b71e-72cfd87a2bb3/f84e3679-281e-41d4-9ea9-b8221085fa7b/images/2e93290e-f1b5-42b2-bdf6-fad695de2ccb/ef334a97-e01b-4d7c-afb0-814ffbe537f0‘: Permission denied.
这两个错误都是由于libvirt设置问题才报错的.
我直接覆盖了libvirtd.conf qemu.conf以及vdsm.conf文件.最近权限问题整的我焦头烂额啊.以后再找具体错误.
本文出自 “尼古风锁丝愁过” 博客，请务必保留此出处http://smoke520.blog.51cto.com/9256117/1795362
原文地址：http://smoke520.blog.51cto.com/9256117/1795362
