From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Error bringing up VMs with Xen 4.0.1 +
	2.6.18-194.32.1.el5xen CentOS Dom0
Date: Tue, 18 Jan 2011 14:24:09 -0500
Message-ID: <20110118192409.GA10765@dumpdata.com>
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To: AP Xen <apxeng@gmail.com>
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On Tue, Jan 18, 2011 at 11:00:18AM -0800, AP Xen wrote:
> I am running Xen 4.0.1 with a 2.6.18-194.32.1.el5xen CentOS Dom0. I built
> and installed the Xen binaries from source. The systems boot successfully
> however I am having issues bring up DomUs. Here is config:
> 
>  
> 
> name = 'xyz'
> 
> memory = 256
> 
> vcpus = 1
> 
> pae = 1
> 
> vnc = 1
> 
> vncunused = 1
> 
> disk = [ 'phy:/dev/vg1/xyz,hda,w' ]
> 
> vif = [ 'type=netfront,bridge=xenbr0,mac=04:01:3e:00:04:62' ]
> 
> builder = 'hvm'
> 
> kernel = '/usr/sbin/hvmloader'
> 
> boot = 'c'
> 
> device_model = '/usr/sbin/qemu-dm'
> 
>  
> 
> When I do an xm create on the config, I get the following error:
> 
> Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

Does the 'xenbr0' interface exist?

Have you tried to contact the xen-users mailing list instead of xen-devel?