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Re: [Xen-users] OpenSuSE 10.3 domU install hangs on CentOS 5.6 xen 3.03

  • To: xen-users@xxxxxxxxxxxxx
  • From: Alexandre Kouznetsov <alk@xxxxxxxxxx>
  • Date: Mon, 05 Nov 2012 17:18:25 -0600
  • Delivery-date: Mon, 05 Nov 2012 23:19:43 +0000
  • List-id: Xen user discussion <xen-users.lists.xen.org>


There are some points that worth checking in your troubleshooting:

El 05/11/12 16:09, Andy Howell escribió:
boot = "c"
Unless you select the boot media in a interactive way (??), it probably should be boot = "d", until your virtual HDD is booteable. I can see from your log that the DomU still tries to boot from CDROM. IMHO, it's better to define the boot device in a very specific way, instead of relaying on some automatic setting.

vnc = 1
vncunused = 1
I have noted that when HVM DomU switches video modes, it disconnects the VNC session (you watch your DomU console via VNC, isn't it?). From spectator's point of view, it looks like a hang. In this case, a quick re-connect solves the thing. If your installer plays with Frame Buffer (I believe CentOS likes nice pictures), that might be triggering this.

Personally, I prefer to configure the VNC server settings in a more specific way:
vfb = [
This causes VNS server to listen on port 5911. Works in Xen 4.0, not sure about 3.0.3. If the VNC client is on the same machine, is better than

disk = [ "file:/virtual3/suse-10_3_root.img,hda,w", ",hdc:cdrom,r" ]
The definition of the CDROM lacks the filename (or block device) specification. Are you attaching it to the DomU somehow after boot?
This is an example from a config file I use for HVM boot:

Don't know if double or single quotes make any difference. Probably not. I guess, /virtual3/suse-10_3_root.img exists in your filesystem and is accessible.

Another thing, is that there is no flag "ioemu", that could be necessarily in order to allow your installer's kernel to see the virtual CDROM.

Alexandre Kouznetsov

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