[Users] Infiniband / OFED on recent kernels?

[Narayan Desai]

Starting with OFED 3.2 (iirc), the ofed maintainers started pushing kernel
drivers upstream. So you should be OK with a 3.7 kernel, as long as you
aren't looking for any exotic features, you should be ok. IPOIB should be
straightforward. iSCSI/iSER should be fine as well, at least from the
client side. I'm not sure about the target.

To get things going, you'll need opensm at a minimum (make sure that the
switch doesn't have a subnet manager included, and disable it if it does),
and you'll want infiniband-diags to make sure your hardware is all good.
 -nld


On Tue, Sep 10, 2013 at 3:15 AM, Danilo Godec <danilo.godec at agenda.si>wrote:

> Hello,
>
> I'm new to Infiniband (and OFED software), as I recenlty got some (2nd
> hand) Infiniband hardware:
>
> - 1 Flextronix 24-port IB switch
> - two dual-port Mellanox MT25208 InhiniHost III Ex
> - a couple of QLogic IBA6120 single port HCA's for clients
>
> What I intend to do with that is:
>
> Two servers with dual-port Mellanox HCA will act as DRBD members, using
> one IB port to interconnect (for DRBD sync), while the other IB port
> will be connected to the switch, 'presenting' DRBD resources to other
> servers (probably using iSCSI, but not quite sure about that). Other
> servers will mostly be (Xen) virtualization servers  and use presented
> DRBD resources as VM storage.
>
>
> I installed OpenSuSE 12.3 and I see that it already includes HCA drivers
> (ib_mthca, ib_qib), IP over IB support (ib_ipoib)  - there is a bunch of
> IB related stuff included in the kernel (3.7.10).
>
> Are these up-to-date or would I be better of getting the OFED-3.5
> sources and compile from there?
>
> Apart from this kernel level stuff, what else do I need from OFED-3.5 to
> actually make it work? OpenSM is probably just one of them and it
> doesn't seem to be included in OpenSuSE 12.3.
>
>
>   Best regards,
>
>   Danilo
>
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