On 02/01/2017 08:47 AM, Korynkevych, RomanX wrote:
> Thanks Corey,
>
> I've dumped raw SDR data to a file using command <ipmitool sdr dump 123.txt>.
> Could you please advice how to decode it?
Ok, I modified the SDR compiler to decode, but the problem is not
there. However, I think I know what the problem is.
By default OpenIPMI will scan every IPMB channel it finds to see if
there are any management controllers out there that need handling. The
trouble is that this particular BMC is responding to it's own address on
channel 6. OpenIPMI has no way to know that this is not a new BMC
because there is no way to discover what the IPMB address for the BMC is
for a specific channel.
OpenIPMI does have some code to handle this (by making assumptions), and
I don't see a bug in it, so I'm wondering if your system has a channel 0
IPMB. Can you send the output of the following command:
i=0; while [ $i -lt 16 ]; do ipmitool <your connection parms>
channel info $i; i=`expr $i + 1`; done
Channel 0 is supposed to be IPMB, but if channel 0 is not IPMB, then the
scanning will not scan that channel and assume channel 6 is the main
IPMB channel. The SDRs have channel 0 IPMB 20 for the main SDR, so it
will be confused.
I have previously stated that a BMC should respond to it's own address.
I'm wondering if I was wrong here now.
I can modify the simulator a bit to reproduce this situation. But there
may still be a bug elsewhere causing an issue, and this is not the issue.
You can work around this by turning off IPMB scanning. When you call
ipmi_open_domain, pass in options to set IPMI_OPEN_OPTION_ALL off and
then enable all the options 2-7 except for the IPMB scan one.
In the mean time, I'll try to reproduce.
-corey
> Regards,
> Roman.
>
> -----Original Message-----
> From: Corey Minyard [mailto:[email protected]] On Behalf Of Corey Minyard
> Sent: Tuesday, January 24, 2017 7:41 PM
> To: Korynkevych, RomanX <[email protected]>;
> [email protected]
> Subject: Re: [Openipmi-developer] Doubled events received from SEL
>
> On 01/24/2017 11:30 AM, Korynkevych, RomanX wrote:
>> Hi Guys,
>>
>> I'm writing application which uses OpenIPMI v2.0.22 library SEL
>> mechanism similar to eventd.c sample application. I register threshold
>> and discrete event handlers for available sensors for domain called
>> mydomain2. When I generate event using ipmitool I'm receive event
>> successfully but it comes twice and all the data is the same
>> (duplicated). After investigation it looks like event is invoked from
>> different MCs. I'm seeing that OpenIPMI lib handler
>> (handle_sel_data()) is called for MC names "mydomain2(0.20)" and
>> "mydomain2(6.20)". In my event handler I'm calling
>> ipmi_sensor_get_mc() and ipmi_mc_get_name() to understand which MC the
>> sensor belongs to and it returns "mydomain2(0.20)". Also I added event
>> handler for SMI interface and when the event arrives there are no
>> doubled events observed.
>>
>> Does anybody has seen this issue? Is this behavior expected? What is
>> the reason I'm receiving events twice?
>>
> It looks like something in your SDRs hash something for IPMB address 20
> channel 6. OpenIPMI adds that as a new MC, but it's the same one as 0.20.
> So it's looking at the same MC as if it was two different MCs, and thus you
> get two events.
>
> I'd have to have the SDRs to be sure. But hopefully you can look at them and
> see. You should have some sensor that's on (6.20).
>
> -corey
>
>> Regards,
>>
>> Roman.
>>
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