You could just use the qlogic hba driver failover.

ql2xfailover=1 in your rmodules.conf

Jedi/Sector One wrote:

>   Hello.
>  
>   I'm trying to get multipath working with LVM2 (2.6.7-rc2-udm2 
> kernel) with
> an LSI storage array.
>
>   The array has two FC controllers, HBAs are two identical Qlogic 2340.
>  
>   On the array, "preferred" controllers are assigned to each LUN.
>  
>   Unfortunately, it looks like dm-multipath always does round-robin load
> balancing.
>
>   The result is that the array fills up the (SANtricity) error log with
> messages like "LUN was accessed through the wrong controller".
>
>   Is there any way to keep failover abilities without load balancing?
>  
>   Best regards,
>  
>        -Frank.
>       
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>