This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-users] Re: Always losing the console output after "Scrubbing free R

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Re: Always losing the console output after "Scrubbing free RAM"
From: Martin Cracauer <cracauer@xxxxxxxx>
Date: Thu, 10 Sep 2009 22:35:49 -0400
Delivery-date: Thu, 10 Sep 2009 19:36:32 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20090907142726.GA5155@xxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <20090907142726.GA5155@xxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/
Still losing the console output.  I now used the 2.6.18-xen that comes
from http://www.xen.org/products/xen_source.html instead of the Debian
kernel and I still have this problem, no change.

Could somebody give my questions below a quick pass? I'm really not
sure what I'm missing here.


Martin Cracauer wrote on Mon, Sep 07, 2009 at 10:27:26AM -0400: 
> Hello.
> I have continued problems with an initial Xen run.  After "Scrubbing
> free RAM" the monitor goes blank (existing output is erased) and it
> stays that way.  The machine doesn't come up pingable, it just goes
> possum.
> Thinking the console output is redirected, I have literally tried all
> variants and combinations of passing parameters to the Linux kernel
> that I'm loading in there.  Everything related to console=, xencons=,
> novidmodechange(?) and a few more.  Not only didn't it solve the
> problem, there was no change at all, so I think I am on an entirely
> wrong path here.
> Setup:
> - pxelinux diskless boot
> - Debian's build of Xen 3.4 hypervisor
> - Debian's kernel vmlinuz-2.6.30-1-amd64 which explicitly says it has
>   Xen support in (and matching initrd and all three of xen, kernel and
>   initrd are loaded fine according to the output I see).
> - also tried my own which also has about the same Xen options on (no
>   initrd).  Same results.
> The machine with the kernel provided boots fine with the diskless
> setup and local config when booted outside of Xen.
> label xen
>         kernel mboot.c32
>         append xen-3.4-amd64 dom0_mem=262144 noreboot console=vga --- \
>               vmlinuz-2.6.30-1-amd64 console=tty0 console=hvc0 --- \
>               initrd.img-2.6.30-1-amd64
> #       append xen-3.4-amd64 dom0_mem=262144 noreboot --- \
>               vmlinuz-2.6.30-1-amd64 console=tty1 xencons=tty1 ---
>               initrd.img-2.6.30-1-amd64
> (backslashed line breaks only for mail, not in the file)
> The hardware is a Dual-Core Opteron socket 939 in a Via K8T800 board
> (Asus A8V-E) with some modern ATI graphics card.
> Questions:
> - let's say I use an entirely unsuitable kernel (no Xen) support, what
>   exactly would the symptoms be?
> - is that hardware maybe unsupported? What are the symptoms if I have
>   unsupported hardware? Are NVidia NForce chipsets better supported?
> What's the best way to proceed here? Should I build Xen and the Xen
> Linux kernel from your sources? Should I try different hardware?
> Serial console?
> Thanks a lot
> Martin
> -- 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> Martin Cracauer <cracauer@xxxxxxxx>   http://www.cons.org/cracauer/
> FreeBSD - where you want to go, today.      http://www.freebsd.org/

Martin Cracauer <cracauer@xxxxxxxx>   http://www.cons.org/cracauer/
FreeBSD - where you want to go, today.      http://www.freebsd.org/

Xen-users mailing list