[linux-lvm] Multipath without round-robin?

Austin Gonyou austin at coremetrics.com
Thu Jun 10 22:06:16 UTC 2004

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.
> _______________________________________________
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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