Help with LUNS

[Bahadir Kiziltan]

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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