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Date: Tue, 29 Nov 2011 12:54:00 -0500
From: Dave Allan <dallan@redhat.com>
Message-ID: <20111129175400.GD4220@redhat.com>
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Subject: Re: [Qemu-devel] problem in setting up vmchannel with libvirt
Reply-To: Dave Allan <dallan@redhat.com>
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To: will <mail278151237@gmail.com>
Cc: qemu-devel@nongnu.org

On Tue, Nov 29, 2011 at 09:55:32AM +0000, will wrote:
> Hi,
> I am trying to set up vmchannel between the host and guest os.
> 
> However, "sudo virsh start vm1" always gave me this error:
> *************************************************************
> error: Failed to start domain vm1
> error: internal error Process exited while reading console log output: char
> device redirected to /dev/pts/5
> bind(unix:/tmp/foo): Permission denied
> chardev: opening backend "socket" failed
> *************************************************************
> 
> Related xml is:
> *************************************************************
> <channel type='unix'>
>   <source mode='bind' path='/tmp/foo'/>
>   <target type='virtio' name='channel.port.0'/>
>   <address type='virtio-serial' controller='0' bus='0' port='1'/>
> </channel>
> *************************************************************
> 
> I can succeed while I manually run the guest os by:
> *************************************************************
> sudo kvm -device virtio-serial \
> -chardev socket,path=/tmp/foo,server,nowait,id=foo \
> -device virtserialport,chardev=foo,name=org.fedoraproject.port.0\
> /path/to/vm1.img
> *************************************************************
> 
> I also noticed that libvirt is able to create socke
> /var/lib/libvirt/qemu/vm1.monitor every time. I can't win even I change the unix
> socket path to "/var/lib/libvirt/qemu/foo"
> 
> 
> Any information will be appreciated!
> 
> 

Try the libvirt-users list for questions like this one:

libvirt-users@redhat.com

Dave