[CentOS] Centos 5.1 - Xen/ domU related booting questions

Wed Apr 16 14:31:14 UTC 2008
Tomasz Nowak <tnowak-p at netventure.pl>

Hello,

I successfuly run Centos 5.1 domU in Centos 5.1 dom0.
But I still have some minor issues/errors/warnings while
booting I'd like to fix and here are my questions:

1. How to disable loading usb host controler module:
  [...from dmesg... ]
  Loading uhci-hcd.ko module
  USB Universal Host Controller Interface driver v3.0
  insmod: error inserting '/lib/uhci-hcd.ko': -1 No such device
  Loading ohci-hcd.ko module
  insmod: error inserting '/lib/ohci-hcd.ko': -1 No such device
  Loading ehci-hcd.ko module
  mount: could not find filesystem '/proc/bus/usb'
  [...]
I have extra parameters being passed to kernel in grub:
kernel /boot/vmlinuz-2.6.18-53.1.14.el5xen ro root=LABEL=/ console=xvc0 
nousb nopcmcia parport=0
but it seems kernel ignores it in domU (works in dom0)

2. How to disable loading floppy detection/support
  Apr 16 14:03:56 xtest1 kernel: Floppy drive(s): fd0 is unknown
                  type 15 (usb?), fd1 is unknown type 15 (usb?)
  Apr 16 14:03:56 xtest1 kernel: Failed to obtain physical IRQ 6
  Apr 16 14:03:56 xtest1 kernel: floppy0: no floppy controllers found

3. How to disable loading parport/lp modules (parport_pc, parport, lp)
  Apr 16 14:03:56 xtest1 kernel: lp: driver loaded but no devices found

4. How to setup xm console correctly? While system boots I see:

Remounting root filesystem in read-write mode:  [  OK  ]
Mounting local filesystems:  [  OK  ]
Enabling local filesystem quotas:  [  OK  ]
Enabling /etc/fstab swaps:  [  OK  ]
INIT: Entering runlevel: 3
Entering non-interactive startup

with no colors. How to make it real console-like, with colors:

Remounting root filesystem in read-write mode:    [  OK  ]
Mounting local filesystems:                       [  OK  ]
Enabling local filesystem quotas:                 [  OK  ]
Enabling /etc/fstab swaps:                        [  OK  ]

-- 
Tomek