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Re: [Xen-users] xenconsole: Could not read tty from store: No such file or directory

On Mon, Mar 19, 2012 at 11:53 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
On Mon, 2012-03-19 at 16:39 +0000, Su Zhang wrote:

> Thanks Ian, I am actually installing a PV DomU here. Do you mean that
> it is better for Dom0 and DomU using the same type OS?

Not at all, you should be free to mix and match. My point was that you
may need slightly different configuration for a PV guest vs an HVM one.

> I am a newbie to Xen. What I want to do right now is to install a
> usable domU ASAP. However, I encountered different errors by using
> different approaches. Do you know which way is the easiest way to
> install a domU system?

The approach you are taking should be easy, I'm at a loss to explain why
it doesn't work for you.

Did you try connecting to the VNC as I suggested?

I tried to connect to VNC, but the connection cannot be established, here is the running script:

[su@XenTester xen]$ vncviewer localhost:5901

TigerVNC Viewer for X version 1.0.90 - built Dec  8 2011 01:41:17
Copyright (C) 2002-2005 RealVNC Ltd.
Copyright (C) 2000-2006 TightVNC Group
Copyright (C) 2004-2009 Peter Astrand for Cendio AB
See http://www.tigervnc.org for information on TigerVNC.

Mon Mar 19 12:36:16 2012
 main:        unable connect to socket: Connection refused (111)
[su@XenTester xen]$ 

Is there a walk-around to the issue?
Have you looked in /var/log/xen to see if there are any interesting
messages under there?

After I read the logs (qemu-de-*.log), I found all of them include several "common" errors:

device-model/3/xen_extended_power_mgmt): read error
xs_read(): vncpasswd get error. /vm/a11e9c05-7bed-f7cd-e0e7-00506415b739/vncpasswd.
Log-dirty: no command yet.
xen be core: xen be core: can't open gnttab device
can't open gnttab device

Could you tell what is happening here?


What version of Xen are you running and where did you get it from (e.g.
self-built vs. packages)? If you are just interested in getting a domain
up and running ASAP then I would strongly suggest you use the Xen
packages supplied by your distribution rather than building them
yourself. I'm not sure which distro you are running though.


I am running Xen 4.1.2 and built it from source. Indeed I need a runnable guest ASAP but we want to run it on a built-from-source Xen because we want to modify Xen source code a bit later. By the way, I am running on CentOS 6.2

Su Zhang
Ph.D Candidate
Computing and Information Sciences
Kansas State University
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