Xen devel - Apr 2006 - /dev/ttyS1 on Xen (domain 0)

Hi,

On a regular FC4 machine there are 76 device file for /dev/ttyS*.

I tried running minicom on a Xen machine (domain 0) whose serial port
is  connected to a different machine (a machine with no VGA/Keyboard/Mouse).

It gave the following error:

minicom: WARNING: configuration file not found, using defaults
Device /dev/ttyS1 access failed: No such file or directory.

So I checked, and
ls /dev/ttyS* -al
gave only one device file:
crw-rw----  1 root uucp 4, 64 Apr  3 13:05 /dev/ttyS0

My question is :
Is there a possibility to run minicom on domain 0 on Xen?

I also tried adding that device,( which udev didn''t create )
by
mknod  /dev/ttyS1 c 4 65
And then I got a bit different error, after running "minicom":
minicom: cannot open /dev/ttyS1: No such device or address

Is it inherently impossible to run minicom on domain 0 because
a driver problem or beacuse the kernel should be
configured and built differently (I wonder why exactly, in such a case)?

I must emphasize: don;t get me wrong. This is more of a theoretic
question (meaning that I of course
have other machines for this task, but it ***DOES*** interest
me , in case this cannot work , what is the exact reason for that; is it
have to do to the split driver model (back/front dirvers) of Xen?

Regards,
John

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On 5 Apr 2006, at 09:35, John Que wrote:
> Is there a possibility to run minicom on domain 0 on Xen?
The virtual console driver cometes with the native serial driver for 
ttyS slots. If you add xencons=off to your xenlinux command line then 
you will still get boot output on the vga console, plus ttyS1 should be 
available for minicom.

  -- Keir


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Thnks.
>  If you add xencons=off
Will xencons=off affect anything else ? does setting this option
prevent anything?

Regards,
John

On 4/5/06, Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
wrote:
>
> On 5 Apr 2006, at 09:35, John Que wrote:
>
> > Is there a possibility to run minicom on domain 0 on Xen?
>
> The virtual console driver cometes with the native serial driver for
> ttyS slots. If you add xencons=off to your xenlinux command line then
> you will still get boot output on the vga console, plus ttyS1 should be
> available for minicom.
>
>   -- Keir
>
>
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