---------- 已转发邮件 ---------- 发件人： suyi wang <wangsuyi640@gmail.com> 日期： 2012年2月29日 上午10:57 主题： Re: [libvirt-users] Unable to connect qemu:///system on Fedora16 X86_64 收件人： Eric Blake <eblake@redhat.com> So, thanks a lot . Eric. I attached the figure，which showed when I ran the command "virt-manager". I also tested the commad as follows, sa you can see my output. [root@localhost ~]# virt-manager --debug 2012-02-29 10:56:13,555 (cli:71): virt-manager startup 2012-02-29 10:56:13,555 (virt-manager:292): Launched as: /usr/share/virt-manager/virt-manager.py --debug 2012-02-29 10:56:13,555 (virt-manager:293): GTK version: (2, 24, 7) 2012-02-29 10:56:13,555 (virt-manager:294): virtManager import: <module 'virtManager' from '/usr/share/virt-manager/virtManager/__init__.pyc'> 2012-02-29 10:56:13,671 (engine:555): No inspection thread because libguestfs is too old, not available, or libvirt is not thread safe. 2012-02-29 10:56:13,674 (engine:346): About to connect to uris ['qemu:///system'] 2012-02-29 10:56:13,720 (engine:471): window counter incremented to 1 2012-02-29 10:56:13,726 (connection:954): Scheduling background open thread for qemu:///system 2012-02-29 10:56:13,727 (connection:1140): Background 'open connection' thread is running Thanks! Suyi Wang 2012/2/29 Eric Blake <eblake@redhat.com>

On 02/28/2012 10:23 AM, suyi wang wrote:

...

Dear all: I ust installed Fedora16Fedora16 X86_64 on my new machine, and then I ran the commands as follows(ran as root):

yum install qemu-kvm yum install qemu yum install libvirt yum install virt-manager

then I started the libvirtd as follow: /etc/init.d/lbvirtd start

So , it ran well.

However, after a few days , when I ran the command "virt-manager" , it showed as bellow:

it seemed that ti cannot connect the hipervisor.

This list is plain-text only. Your embedded graphic (at least, I'm assuming you attempted to embed a graphic) got eaten by the list server, so we don't know what message you got. Can you paste the actual error message you got?

Meanwhile, we have a wiki page for diagnosing common problems. Perhaps your issue is covered by one of the items there; and if not, it would help if you could add a new page with the steps you take in resolving the issue. http://wiki.libvirt.org/page/Troubleshooting

...

Then I did a little test: I ran the conmand "virsh list" , but it didnot work,either.

Again, knowing the exact output of 'virsh -c qemu:///system list', rather than just saying it didn't work, will help others in diagnosing your issue.

-- Eric Blake eblake@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org