[ofa-general] RE: opensm: a bug in heavy sweep? - no LFT re-configuration

[Eitan Zahavi]

> On 20:59 Mon 23 Jul     , Eitan Zahavi wrote:
> > Hi Sasha, Hal,
> >  
> > I think I have an idea:
> >  
> > Since this is a specific switch that reported ChangeBit or Trap why 
> > can't we just qualify that there was no change in the switch setup?
> 
> The ChangeBit seems to be good start point - then OpenSM will 
> query all switch ports PortInfo anyway and if for all ports 
> PortState is <= INIT (and at least for one port it is = 
> INIT), it means that this switch was rebooted/reinitialized.
> 
> And for single port PortState drop to = INIT should indicate 
> reinitialization.
> 
> Seems correct?
Yes.
> 
> > We could send PortInfo, SwitchInfo,
> 
> SwitchInfo is queried at each light sweep, PortInfo's if 
> ChangeBit is set. Guess we are ok with it even now.
I will double check that...
Well - even setting one port state to INIT did not cause the switch to
be reconfigured.
Seems the code does not enforce this condition yet.
> 
> > LFT, MFT, SL2VL, VLArb, PKey queries
> > and make sure no change from previous state. Or we could simply 
> > enforce last state by sending it over again ...
> 
> I think we could want to re-read PKey tables in order to 
> preserve existing PKey indices and just to flush (overwrite 
> with new settings) LFT, MFT, SL2VL, VLArb tables. Reasonable?
Correct.


> 
> Sasha
>