Corey Minyard wrote:

> Mathieu ALORENT wrote:

> > [kern.warning] kernel IPMI message handler: BMC returned incorrect
> > response, expected netfn 3b cmd 3c, got netfn 3a cmd 3c

> These appear to be for error responses, for instance the
> 2C/2D one is an ATCA probe (which your box won't support, since I
> don't think it's ATCA).  So it appears to be returning incorrect
> responses for errors.

> The last one is a little strange, it's doing a "Get SDR" request and
> that shouldn't fail.

Corey (or anyone), do you have a tool which parses these logs
and translates the unexpected netfn messages to a human
readable representation like the "Get SDR" you show above?  I
can do it manually (or write a script), but don't want to
duplicate effort if it already exists.

> You should report this to Sun, though if everything else is working
> correctly and it's not spewing out these errors it shouldn't affect
> normal operations very much.

We have seen cases where it spews, and others where it it's
intermittent but when it happens it does mess up some IPMI-
based monitoring.  And I think some cases where it's just a
sporadic complaint with no noticable consequences.

I think at least some cases of this are due to SMM (System
Management Mode -- special out of band CPU mode that gets
underneath the host OS).  An SMI (SMM interrupt) comes in,
SMM BIOS code executes and either reads the response you were
expecting or sends a new command to which you then read the
response.  If this is the case, BIOS authors have to fix it
by eliminating the IPMI access; using a different channel
or interface; or ensuring that they never issue a command
while a response is pending and always consume the response
after issuing a command (not sure if that last method is
actually viable).

>Bela<
------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
Openipmi-developer mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/openipmi-developer

Reply via email to