I don't have any recent experience to share, however I would comment that multipath is separate from LVM. I only mention this because the LVM layer really isn't needed in NetApp environments. Don't get me wrong, the LVM2 stuff is very cool and useful with more traditional storage. My point is that NetApp luns natively provide all the benefits of a logical volume manager, so the use of LVM (with NetApp controllers) is redundant. The use of LVM wont hurt your customer in any way, but it does increase complexity.