<div class="gmail_quote">On Thu, Feb 5, 2009 at 4:07 PM, Bryn M. Reeves <<a href="mailto:bmr@redhat.com">bmr@redhat.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="Ih2E3d">Christian Røsnes wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> </blockquote></div></blockquote><div> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I also see these messages in /var/log/messages when I change the module controller ownership: 494 [RAIDarray.mpp]MD3000i_A:0:1:0 Cmnd-failed try alt ctrl 1. vcmnd SN 351494 pdev H2:C0:T0:L0 0x05/0x94/0x01 0x08000002 mpp_status:1 </blockquote> </div> Don't know where this is coming form. Do you have IBM's MPP multipathing driver installed? If you are using device-mapper multipath and multipath tools (the rest of your mail suggests this is your intention) you should not load the MPP modules.<div class="Ih2E3d"> </div></blockquote><div>Hi Thank you for the information. I think the MPP driver came from the linuxrdac-09.03.0C06.0030-1dkms rpm package installed from the Dell MD3000i Resource CD, because the top of the Makefile in /usr/src/linuxrdac-09.03.0C06.0030 reads: #********************************************************************** # Makefile for Linux RDAC (MPP) Driver # # This is a modified version of the linuxrdac Makefile provided by LSI # (renamed to Makefile_orig). # It is dkms compatable, and provides: # genuniqueid, mppUtil, install, uninstall # The mppUpper and mppVhba targets are provided by dkms through obj-m # ####################################################################### It was maybe installed when I choose this option 3 from the installer on that CD: ------------------------------------------------------------------------------------------------------------- ################################################################ Dell PowerVault MD3000i Resource CD ################################################################ 1. View MD3000i Readme 2. Install MD3000i Storage Manager 3. Install Multi-pathing Driver 4. MD3000i Configuration Utility 5. Dell Support 6. View End User License Agreement Enter the number to select a component from the above list. Enter q to quit. Enter: 3 ------------------------------------------------------------------------------------------------------------- Is mpp another type of rdac driver than the one in question here ? </div></div>Thank you Christian