Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

Pasi,

I've tried :-

title vmlinuz-2.6.31-rc8 Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
    kernel  /vmlinuz-2.6.31-rc8  root=/dev/sdc2  ro console=tty0 console=ttyS0,9600
    initrd  /initrd-2.6.31-rc8.img

and

title vmlinuz-2.6.31-rc8 Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
    kernel  /vmlinuz-2.6.31-rc8  root=/dev/sdc2  ro console=tty0 console=ttyS0,9600n8
    initrd  /initrd-2.6.31-rc8.img

Both options send output to real console and hangs at the point as under
Xen.

Boris.
P.S  Null modem connection is OK . I verified for Xen Serial Grub Entry.


--- On Fri, 9/11/09, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Date: Friday, September 11, 2009, 11:55 AM

On Fri, Sep 11, 2009 at 08:07:54AM -0700, Boris Derzhavets wrote:
> Out of ideas how to setup serial console on Ubuntu 9.04 for vanilla kernel.
>
> title vmlinuz-2.6.31-rc8 Serial / Ubuntu 9.04 Jaunty (kernel 2.6.31-rc8)
>     kernel  /vmlinuz-2.6.31-rc8  root=/dev/sdc2  ro com1=9600,8n1 console=com1 console=ttyS0
>     initrd  /initrd-2.6.31-rc8.img
>
> doesn't work.
>
> Googling provides outdated information. (RH 7.2, Suse 10.2)
> It just crashes grub.
>

serial console setup for normal Linux kernel (non-xen):

vmlinuz root=whatever ro console=tty0 console=ttyS0,9600n8

That should work if it's a normal onboard serial port.

If that doesn't work then try with "console=ttyS0,9600",
which enables flow control.

Read more here:
http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-kernel.html

-- Pasi

> Boris.
>
>
>
> --- On Fri, 9/11/09, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
>
> From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> Subject: Re: [Xen-devel] Attempt to load 2.6.31-rc8 under Xen 3.4.1 on top of Ubuntu 9.04 Server ( JF's 2.6.31 loaded as vanilla)
> To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
> Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
> Date: Friday, September 11, 2009, 9:38 AM
>
> On Fri, Sep 11, 2009 at 05:56:56AM -0700, Boris Derzhavets wrote:
> > The most recent 2.6.31 built via Jeremy's Git Repos loads as vanilla on
> > top of Ubuntu 9.04 Server.
>
> Boris,
>
> Let me specific. Please boot up without Xen, the kernel
> that was built on Wed Sep 9 16:02:46 MSD 2009(2.6.31-rc8), and use
> the serial console.
>
> Using the vanilla kernel does not help me. I need to understand what is
> different when you boot 2.6.31-rc8 under Xen and without Xen. Comparing
> it to a 2.6.31 is not helping.
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>
>
>
>       
> _______________________________________________
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> http://lists.xensource.com/xen-devel


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