Thank you. I rebuild libvirt, and this issue is resolved. I guess something went wrong during last build.<div> On Tuesday, May 8, 2012, Alex Jia wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi David, Need to know your libvirt, virt-manager and python-virtinst version, the following bug may be similar to your issue: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=786672" target="_blank">https://bugzilla.redhat.com/show_bug.cgi?id=786672</a> The issue has been fixed on python-virtinst-0.600.0-7.el6, please try it again. Thanks, Alex ----- Original Message ----- From: "Xi Shen" <<a href="javascript:;" onclick="_e(event, 'cvml', 'davidshen84@gmail.com')">davidshen84@gmail.com</a>> To: <a href="javascript:;" onclick="_e(event, 'cvml', 'virt-tools-list@redhat.com')">virt-tools-list@redhat.com</a> Sent: Tuesday, May 8, 2012 12:10:25 PM Subject: [virt-tools-list] VM disappear when started Hi, Both the virt-manager and my xend service are on the same server. When I first start virt-manager, and connected to my xend service, all my non-started vms are listed. But if I start any of them, either from the UI or from the terminal, the vm disappear immediately, and it will remain disappear as long as the vm is running. Even restart virt-manager will not help. The manager worked very well previously, so I think upgrading my system may break something. But I need some help troubleshooting this. -- Regards， David Shen <a href="http://about.me/davidshen" target="_blank">http://about.me/davidshen</a> <a href="https://twitter.com/#!/davidshen84" target="_blank">https://twitter.com/#!/davidshen84</a> _______________________________________________ virt-tools-list mailing list <a href="javascript:;" onclick="_e(event, 'cvml', 'virt-tools-list@redhat.com')">virt-tools-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/virt-tools-list" target="_blank">https://www.redhat.com/mailman/listinfo/virt-tools-list</a> </blockquote></div> -- Regards， David Shen <a href="http://about.me/davidshen" target="_blank">http://about.me/davidshen</a> <a href="https://twitter.com/#!/davidshen84" target="_blank">https://twitter.com/#!/davidshen84</a>