Help with LUNS [Solved]

[Eric.Jorgensen at westernunion.com]

Thanks, this did the trick, along with a couple of other pointers from the 
list. 

I had to do an "powermt unmanage dev=emcpowera" and b, and then I could 
load the file.  After a reboot, it came back up with the correct LUNs.

Thanks!

Eric




Eric Jorgensen
Sr. Systems Administrator, WU Corporate Systems
Office:  720-332-5615  Ext:  65615
Cell:  303-589-6630   FAX:  720-332-7627
Email:  eric.jorgensen at westernunion.com
12500 E Belford Ave M12SD  Englewood CO 80112



"Bahadir Kiziltan" <bahadir.kiziltan at gmail.com> 
12/15/2008 11:11 AM

To
Eric.Jorgensen at westernunion.com
cc
linux-poweredge at lists.us.dell.com
Subject
Re: Help with LUNS






hi,

have a look at the binary "emcpadm" which comes with powerpath rpm 
package... it's used to rename the pseudo device names:

emcpadm renamepseudo -s <src pseudo device name> -t <tgt pseudo device 
name>

In clustered environments you should use the same device device on both 
nodes. To achieve this;

on node #1
powermt save file=maps.pp

Then move "maps.pp" file created to node #2 and run
powermt load file=maps.pp

- Bahadir

On Mon, Dec 15, 2008 at 7:55 PM, <Eric.Jorgensen at westernunion.com> wrote:

Hello, 

I have two PE 2950s running Oracle Enterprise Linux (RedHat variant like 
Centos) 5.2.  They each have two QLogic Corp. ISP2422-based 4Gb Fibre 
Channel to PCI-X HBA (rev 02), and I have installed the 
EMCpower.LINUX-5.1.0-194 powerpath RPM.   The LUNs come up just fine, 
however, they are reversed on the two different machines.  That is, in 
order for Oracle RAC to be installed, the same LUN must have the same name 
on both box.  Box 1: 


/dev/emcpowera1 
/dev/emcpowerb1 
/dev/emcpowerb2 
/dev/emcpowerb3 

Box 2: 

/dev/emcpowera1 
/dev/emcpowera2 
/dev/emcpowera3 
/dev/emcpowerb1 


So what I would need is to find out where this is configured, where the 
powerpath settings are that control the IDs, or even the navicli options 
to switch things around.\ 

Any help would be appreciated!  Thanks, 

Eric 




Eric Jorgensen
Sr. Systems Administrator, WU Corporate Systems
Office:  720-332-5615  Ext:  65615
Cell:  303-589-6630   FAX:  720-332-7627
Email:  eric.jorgensen at westernunion.com
12500 E Belford Ave M12SD  Englewood CO 80112 


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