IPMI SEL logs from phosphor-logging

[Lei YU]

On Thu, Jun 24, 2021 at 1:21 PM George Hung (洪忠敬)
<George.Hung at quantatw.com> wrote:
>
> Hi Lei,
>
> I enable SEL_LOGGER_SEND_TO_LOGGING_SERVICE option for phosphor-sel-logger and then would generate IPMI SEL logs from phosphor-logging successfully.
>
> But the phosphor-logging still has other events issued from elog function and also put them in the "/var/lib/phosphor-logging/errors" directory.
>
> For example:
>
> 00000000  03 00 00 00 03 00 00 00  03 00 00 00 67 ff e6 38   |............g..8|
> 00000010  7a 01 00 00 32 00 00 00  00 00 00 00 78 79 7a 2e  |z...2.......xyz.|
> 00000020  6f 70 65 6e 62 6d 63 5f  70 72 6f 6a 65 63 74 2e   |openbmc_project.|
> 00000030  43 65 72 74 73 2e 45 72  72 6f 72 2e 49 6e 76 61  |Certs.Error.Inva|
> 00000040  6c 69 64 43 65 72 74 69  66 69 63 61 74 65 01 00  |lidCertificate..|
> 00000050  00 00 00 00 00 00 09 00  00 00 00 00 00 00 5f 50  |.............._P|
> 00000060  49 44 3d 38 37 35 34 00  00 00 00 00 00 00 00 00  |ID=8754.........|
> 00000070  19 00 00 00 00 00 00 00  76 33 2e 37 2e 30 2d 34  |........v3.7.0-4|
> 00000080  2d 67 66 32 36 39 36 39  66 64 34 2d 64 69 72 74  |-gf26969fd4-dirt|
> 00000090  79 67 ff e6 38 7a 01 00  00                     |yg..8z...|
> 00000099
>
> This event type is not IPMI System/OEM SEL, so "ipmitool sel elist" would result in the unspecified error:
>
> # ipmitool sel elist
> Get SEL Entry 0 command failed: Unspecified error
> Get SEL Entry 0 command failed: Unspecified error
>
> How do you deal with these events that not belong to IPMI SEL logs ?

Such logs are mapped to the system sensor as "Undetermined system
hardware failure".
e.g.

  23 | 06/21/2021 | 06:26:35 | System Event #0xf0 | Undetermined
system hardware failure | Asserted

See https://github.com/openbmc/phosphor-host-ipmid/blob/master/selutility.cpp#L365
for details.

So you need to define the inventory sensor of
"/xyz/openbmc_project/inventory/system" in the system's
ipmi-inventory-sensors.yaml, then such events could be mapped to this
inventory if there is no CALLOUT or no SEL metadata in the logging
entry.