Description of problem:
---------------------------------
I have a new DELL Precision n470 and I used the RedHat WS4 Linux (kernel
2.6.9-22ELsmp), which comes with the DELL.  I have 2 hard disks (1 500 GB on
/dev/sda and another on /dev/sdb) but I have NO RAID at all.

I have found (after a lot of "trials and errors") that the following lines in
/etc/rc.sysinit somehow think that I have a NVIDIA RAID system and create
/dev/mapper/nvidia_bafiedbg and /dev/mapper/nvidia_bafiedbg1:
   if [ -x /sbin/dmraid ]; then
       modprobe dm-mirror > /dev/null 2>&1
      /sbin/dmraid -i -a y
   fi

Somehow, this would prevent me from mounting my 2nd harddisk on /dev/sdb1.
If I comment out those few lines and reboot my machine, the /dev/sdb1 would be
properly mounted on /mnt/disk2.

--------------------------------------------------

Version-Release number of selected component (if applicable):
--------------------------------------------------------------
If I do "dmraid -V", I would get :

dmraid version:         1.0.0.rc8 (2005.05.19) debug 
dmraid library version: 1.0.0.rc8 (2005.05.19)
device-mapper version:  4.4.0

The RPM version is :     dmraid-1.0.0.rc8-1_RHEL4_U2
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How reproducible: Every time !

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Steps to Reproduce:
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1. I don't really need to do anything but just let the PC boot without changing
any boot script such as /etc/rc.sysinit.  Because after booting, ie., the
/dev/sdb1 is not mounted and cannot be mounted to (say) /mnt/disk2 .

-----------------------------------------------------------------------
  
Actual results:
-------------------------------------------------------------------------------
After (re)booting finishes, On the /var/log/messages, you'd see the following
message during boot time:
===============================================================
Oct  9 08:14:12 cnipol2 mount: mount: /dev/sdb1 already mounted or /mnt/disk2 busy
===============================================================


If I try to "mount -t ext3 /mnt/disk2 /dev/sdb1" manually.  It'd say again :
===============================================================
/dev/sdb1 already mounted or /mnt/disk2 busy
===============================================================

If you do "df ." on /mnt/disk2, you'd see 
==================================================================
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda5            474339700   6466984 443777628   2% /
==================================================================

that it's on the other hard disk /dev/sda5, NOT /dev/sdb1.

------------------------------------------------------------------------

Expected results:
------------------------------------------------------------------------
If things work,  doing "df ." on /mnt/disk2, one should see :
==================================================================
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sdb1            240308484     94272 228007224   1% /mnt/disk2
==================================================================

------------------------------------------------------------------------

Additional info:
------------------------------------------------------------------------
(1) My /etc/fstab looks like

===================== my /etc/fstab ===========================
# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/                 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /proc                   proc    defaults        0 0
none                    /sys                    sysfs   defaults        0 0
none                    /dev/shm                tmpfs   defaults        0 0
LABEL=SWAP-sda6         swap                    swap    defaults        0 0
LABEL=/mnt/disk2     /mnt/disk2                  ext3    defaults        1 2
/dev/hdc                /media/cdrecorder       auto   
pamconsole,fscontext=system_u:object_r:removable_t,exec,noauto,managed 0 0
/dev/fd0                /media/floppy           auto   
pamconsole,fscontext=system_u:object_r:removable_t,exec,noauto,managed 0 0
==========================================================================

Changing "LABEL=/mnt/disk2" to "/dev/sdb1" would NOT solve the problem.


(2) By chance, I have found that if I do
                              mount -L /mnt/disk2

I'd get the message:
===========================================================================
mount: the label /mnt/disk2 occurs on both /dev/sdb1 and
/dev/mapper/nvidia_bafiedbg1 - not mounted
===========================================================================

Even if I later label /dev/sdb1 to say "/disk2", change the fstab file
according) and reboot, somehow, your dev-mapper would pick up that label as well !

This was in fact how I was able to start to trace the problem.



(3) Under /dev/mapper, do a "ls -l", I see :
=================================================
total 0
crw-------  1 root root  10, 63 Oct  9 08:47 control
brw-rw----  1 root disk 253,  0 Oct  9 08:47 nvidia_bafiedbg
brw-rw----  1 root disk 253,  1 Oct  9 08:47 nvidia_bafiedbg1
=================================================

(4)  If I do "umount -v /mnt/disk2", I see the message:
====================================================
Could not find /mnt/disk2 in mtab
umount: /mnt/disk2: not mounted
====================================================

------------------------------------------------------------------------