KVM localhost(qemu)--connecting卡死

KVM localhost(qemu)-connecting卡死

參考文檔：

http://wiki.libvirt.org/page/Failed_to_connect_to_the_hypervisor

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.3_Technical_Notes/libvirt.html

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/App_TCP_Ports.html

場景：VM workstation12安裝Ubuntu12.04 x64跟kvm

現象：virsh命令直接卡死，virt-manager提示「 沒有活躍鏈接可用於安裝"，關機重啓命令無效只能斷電

緣由：libvirtd調用子進程dmidecode超時至沒法響應，可能和VM workstation的兼容性有關

解決辦法：killall dmidecode

殺掉dmidecode後，kvm立馬就正常了，關機重啓也正常了