[Xen-users] Error on DomU with xencons=ttyS

[MINAI Katsuhito <minai@xxxxxxxxxxxxxx>]

Hi all,

I have a question on /etc/inittab for DomU booted with xencons parameter.

I saw the following error messages when I appended xencons=ttyS to DomU
boot option.

  INIT: Id "1" respawning too fast: disabled for 5 minutes
  INIT: Id "2" respawning too fast: disabled for 5 minutes
  INIT: Id "4" respawning too fast: disabled for 5 minutes
  INIT: Id "3" respawning too fast: disabled for 5 minutes
  INIT: Id "5" respawning too fast: disabled for 5 minutes
  INIT: Id "6" respawning too fast: disabled for 5 minutes

"Xen 3.0 Users' Manual" says that xencons=ttyS attaches the console to
/dev/ttyS0.

The direct cause of this error is that mingetty ended on abnormal status
immediately.
mingetty was logging the following message. I checked the source codes
and found that this message was logged when opening /dev/tty1 failed on
ENXIO.

  /bin/mingetty[2399]: tty1: cannot open tty: No such device or address

I confirmed that removing tty1-tty6 from /etc/inittab stopped the error.
But I wonder if it is a proper way to not let the error occur.
In my view, this error should not occur even if tty1-tty6 are in
/etc/inittab because vanilla linux needs no modification of /etc/inittab
even though it uses a serial console.


Best regards,
Katsuhito Minai




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