[one-users] Infiniband, nodes and VMs

[Galimba]

Hello!
I've been given the task to step up our game and connect a few nodes tru
infiniband. This meaning: we've been working over gigabit ethernet this
far, but now we want our ONE nodes hosting the VMs to be interconected tru
IP over infiniband. We have the hardware to do so, but I must confess I
lack the expertise to pull this off.

*I've been googling around a bit and found a couple of links. Even tho I
think the answers to both my questions are there (yes, it's possible, and
no it's not that hard).*

https://github.com/OpenNebula/addon-kvm-sr-iov
http://blog.scottlowe.org/2009/12/02/what-is-sr-iov/
http://wiki.opennebula.org/ecosystem:sr-iov
http://pkg-ofed.alioth.debian.org/howto/infiniband-howto-5.html

I know little about infiniband, so here are a few questions I started with:
1) Is it hard to get the VMs to work with eachother over infiniband? I
mean, if I have a client who wants his VMs to trade messages at really fast
speed. I'd like them to be able to create VMs that work on a specific
infiniband network at high speed.

2) Is it easy to configure the hosts to deliver the images back and forth
over infiniband? This would really speed up the deploy.

3) Is someone using this setup? I mean, using a hardware interface shared
between both the nodes and the vms.

*I'd apreciate any input you guys can give me =)*

best regards
galimba

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