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

Sasha Khapyorsky sashak at voltaire.com
Mon Jul 23 17:33:02 PDT 2007


Hi Hal,

On 11:33 Mon 23 Jul     , Hal Rosenstock wrote:
> > >
> > > Not for "fast" switch reboot.
> > >
> > > Hmm, I think we could try to detect this by comparing
> > > SwitchInfo:LinerFDBTop with current p_sw->max_lid_ho or even by seeing
> > > that PortInfo:LID is not set.
> >
> >
> > Not sure about checking PortInfo:LID. Wouldn't that approach need to be
> > qualified by PortState (armed or active) ? LFTTop seems better to me or
> > perhaps a combination of the two but I may be missing something.
> >
> 
>  Another thought on this :-(
> 
>  Not sure that resetting either LID or LFTTop is required by the spec either
>  so this is relying on "beyond the spec" behavior and may not be true for all
>  switch implementations.

Yes, it is similar to my findings. Suggested in your previous email
PortState check seems only reliable reboot detection criteria (for ports
and switches).

Sasha



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