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Re: [Freeipmi-users] ipmiconsole asus problem

From: Albert Chu
Subject: Re: [Freeipmi-users] ipmiconsole asus problem
Date: Sun, 23 Mar 2008 15:43:49 -0700 (PDT)
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> Hello Al,
> On Sunday 23 March 2008, Albert Chu wrote:
>> Hey Bernd,
>> > Hello Al,
>> >
>> > On Sunday 23 March 2008, Albert Chu wrote:
>> >> Hey Bernd,
>> >>
>> > I still have a problem, though. As with ipmitool sysrqs don't work,
>> > although
>> > sysrqs are generally enabled. Do you have an idea what might be the
>> > problem?
>> I can't speak for the asus boards, but I know that some motherboards
>> cannot support serial-breaks via IPMI, therefore not allowing sysrqs to
>> be
>> generated.  I only know of one vendor that does support it, and I had to
>> complain until a firmware fix was finally done.  So it wouldn't surprise
>> me if serial-breaks via IPMI just didn't work on the asus board.  Do
>> sysrqs work when you connect via a normal serial cable?
> I would be suprised if sysrqs via serial cable wouldn't work, so far this
> was
> never an issue with any system I ever tested. But I will make absolutely
> sure
> on Tuesday when I'm on site.
> We have an ipmi stability problem anyway and Asus is presently designing
> new
> ipmi cards (AFAIK some internal memory of these cards is too small to
> cache
> all sensors data and then the cards simply crash after some time), so I
> will
> tell them about the break problem...
> (I really need sysrqs, since I'm actually responsible for Lustre and the
> day
> will come when I need kernel traces to debug a Lustre problem).
> Thanks again for your help and happy Easter,
> Bernd

Hey Bernd,

Thanks for working with Asus on it.  We use sysrqs here all the time for
kernel traces/crashes/etc.  The lack of its functionality by a lot of
vendors in IPMI has worried us.  Getting each vendor to be more IPMI
compliant and get IPMI better will be good for all of us.


Albert Chu
Computer Scientist
High Performance Systems Division
Lawrence Livermore National Laboratory

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