Bug 206419

Description of problem:
When I try to create pv's for LVM2 on four 250GB Sata disks it failed with 
error:

[root@uni-media Documentation]# pvcreate /dev/sdc
  Can't open /dev/sdc exclusively.  Mounted filesystem?


Version-Release number of selected component (if applicable):
both RHEL4 update 3 and RHEL4 update 4 are affected.

How reproducible:
Every time

Steps to Reproduce:
1. plug any SATA disk in RAID controller
2. try to launch "pvcreate /dev/[diskname]"
  
Actual results:
 Can't open [diskname] exclusively.  Mounted filesystem?

Expected results:
succesfully created PV

Additional info:
I've found exact the same problem here:
http://www.redhat.com/archives/linux-lvm/2006-May/msg00040.html
I've wrote author of that message about my problem, here is his answer:
===========
I have four drives attached to this controller and they are all 
detected. It is a PDC20276 controller, with limitations. (so I've read).
The kernel uses this chip in some sort of "native" mode I think (I am no 
expert on this) anyway there are no kernel modules loaded for this.
I used "Chip Select" (CS) on the drives in which case the controller 
should assign Master/Slave settings. But somehow this fails.
I set the jumpers on the disks from CS to Master/Slave and now it 
magically works. Don't know if this is just luck, magic or expected 
behaviour...
==========

Maybe bug is related to RAID drivers or something like that. 

My hw info:
00:00.0 Host bridge: Intel Corporation 82875P/E7210 Memory Controller 
Hub (rev 02)
00:01.0 PCI bridge: Intel Corporation 82875P Processor to AGP Controller 
(rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC 
Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE 
Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller 
(rev 02)
00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus 
Controller (rev 02)
02:07.0 RAID bus controller: Promise Technology, Inc. PDC20319 (FastTrak 
S150 TX4) (rev 02)
02:09.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
02:0a.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet 
Controller (Copper)
02:0b.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet 
Controller (Copper)