Re: [Xen-users] Accessing serial port

[Luke Crawford <lsc@xxxxxxxxx>]

First, to make grub use the serial console, I add:
serial --unit=0 --speed=9600
terminal --timeout=2 serial console

to my grub config (grub.conf or menu.lst)

then I make a grub section to boot xen and my dom0 like this:

title           xen-3.0.2-2/2.6.16-xen0
root            (hd0,0)
kernel          /boot/xen.gz com1=9600,8n1 dom0_mem=256000
module          /boot/vmlinuz-2.6.16-xen0 console=/dev/ttyS0\ 
root=/dev/md0 ro qla2xxx
boot

I compiled the dom0 kernel with the serial drivers disabled (the xen 
compiliation foo does it for you... just don't re-enable them.)
then I uncomment the line in /etc/inittab that looks like this:
T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100


and from the box I'm using to console in (my console server is a FreeBSD 
box with an 8-port rocketport but a laptop with a crossover cable would 
work fine as well)  I use cu -lttyR02 -s9600     (where ttyR02 is the 
serial port on the terminal server or laptop)
On Mon, 28 Aug 2006, Kanwar Ranbir Sandhu wrote:
> On Mon, 2006-28-08 at 17:26 -0500, Richard Thomas wrote:
> > I am having issues getting the serial port to show up. I have
> > xencons=off I have tried  com1=auto,8n1,0x03E8,4 and various other
> > formats in my grub.conf and can't get the port to show up under xen in
> > iether the main domain or virtual domains.
> If you search the archives, you'll find a few threads about this.  In
> one, someone suggested that the only way to get access to the serial
> port is to use the xen0 and xenU kernels.  You'll then be able to enable
> the serial port for dom0, and turn it off for domU.
>
> This worked for one guy, but hasn't for me - my serial port is still
> toast.  It might work for you, so try it out.
>
> Regards,
>
> Ranbir
>
> --
> Kanwar Ranbir Sandhu
> Linux 2.6.17-1.2142_FC4 i686 GNU/Linux
> 18:36:08 up 3 days, 12:05, 3 users, load average: 0.42, 0.34, 0.23
>
>
>
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