Re: EXTERNAL: OT: Linux vendor survey results

Taking a peek at Oracle's UEK source git viewer, the full IB stack seems to be there, including change-level detail. See https://oss.oracle.com/git/?p=linux-uek3-3.8.git;a=tree;f=drivers/infiniband/core for
example. According to the UEK3 announcement ( https://blogs.oracle.com/linux/entry/announcing_the_unbreakable_enterprise_kernel) it's just the OFED 2.0 stack. It's dual GPL/BSD licensed, so I don't see a reason why Red Hat couldn't incorporate the bits and pieces into their own kernel should they choose to.

Cheers,

Marc

On Fri, Dec 6, 2013 at 12:04 PM, Don Seiler <don_at_seiler.us> wrote:

> It's accurate, and I asked them repeatedly about the nature of the bug and
> the fix and they wouldn't tell me. I'm drafting a blog post about it but
> was hoping to provide more detail for the reader other than "Oracle said
> so". My take was that Oracle said they re-wrote the module from scratch,
> and so wasn't bound by any GPL-type of license forcing them to make their
> changes available.
>
> It was disappointing to say the least, and so long story short we had to
> abandon Infiniband in favor of 10gbE.
>
> Don.
>
>
> On Fri, Dec 6, 2013 at 12:31 PM, Matthew Zito <matt_at_crackpotideas.com>wrote:
>
>> If that's accurate, that's an extremely hostile statement on the part of
>> Oracle. Linux is open source, and in general, other than some video
>> drivers that are still a sensitive subject, kernel modules are not closed
>> source. For Oracle to take all of the work that Red Hat put into building
>> RHEL, copy all of the bits they *did not* make closed source, and then
>> reimplement just the pieces they choose and call it proprietary is very
>> troubling.
>>
>> Matt
>>
>>
>> On Fri, Dec 6, 2013 at 1:22 PM, Don Seiler <don_at_seiler.us> wrote:
>>
>>> I can also say that OEL/UEK contains some fixes that aren't available in
>>> RHEL. In my case it was that Oracle UEK had a complete re-write of the OFA
>>> module (open fabric). The RHEL version of this module causes DirectNFS to
>>> choke on Infiniband. Oracle is not sharing their re-write back to RH since
>>> they say it's proprietary. However we're still on RHEL so we had to abandon
>>> our Infiniband plans.
>>>
>>> Don.
>>>
>>>
>>>
>
>
> --
> Don Seiler
> http://www.seiler.us
>

-- 
Marc Fielding
Senior Consultant
Pythian - love your data
fielding_at_pythian.com | twitter.com/mfild | linkedin.com/in/mfielding

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