Re: OpenSM Failover

Aaron Knister
2009-10-13T15:52:00Z

Thanks! I really appreciate that.

I still have a question about the initial failover- I'm still
wondering why there's a 30 second delay. Wouldn't nodeA send some type
of handover message (my IB knowledge is limited) to notify a subnet
manager of a lower priority to take over? As I said, the older opensms
on the older mellanox model HCAs failsover and failsback instantly.

On Tue, Oct 13, 2009 at 11:32 AM, Yevgeny Kliteynik
<kliteyn-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org> wrote:
> Aaron,
>
> Thanks for the logs, this was really helpful.
> Looks like there is a handover race in the OSM -
> SM on node A misses the fact that SM on node B
> have gave up its mastership.
>
> There is a bugzilla issue the describes all the
> details of this race:
>
> https://bugs.openfabrics.org/show_bug.cgi?id=1499
>
> I've updated the issue form with your case, and we will continue following
> this bug there.
>
> -- Yevgeny
>
> Aaron Knister wrote:
>>
>> While the adapters have mellanox chipsets their actually IBM OEM
>> branded and IBM hasn't released the 2.7 fw yet. I'm a little hesitant
>> to apply the generic Mellanox FW.
>>
>> On Mon, Oct 12, 2009 at 4:22 AM, Yevgeny Kliteynik
>> <kliteyn-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org> wrote:
>>>
>>> Or Gerlitz wrote:
>>>>
>>>> Yevgeny Kliteynik wrote:
>>>>>
>>>>> There was a hand-over problem in OFED 1.4, but later it turned  out to
>>>>> be
>>>>> FW issue. The thing is, FW version 2.6.648 doesn't  have this bug any
>>>>> more...
>>>>
>>>> so things should work fine with the newly released 2.7 firmware?
>>>
>>> Yes
>>>
>>>> if this is still under question, Aaron, I suggest you open a bugzilla
>>>> case
>>>> @ https://bugs.openfabrics.org and we can track from there.
>>>
>>> Good idea.
>>>
>>> -- Yevgeny
>>>
>>>> Or.
>>>>
>>>>