Re: [Ipmitool-devel] Preserving SEL date/time stamps across a clear event

[Brad W. <Br...@sy...>]

Hi Holger and Zdenek,


Thank you both for the guidance!  I've pulled ipmi-intelligent-platform-mgt-interface-spec-2nd-gen-v2-0-spec-update.pdf for future reference.


Cheers,

Brad

________________________________
From: Liebig, Holger <hol...@ts...>
Sent: Tuesday, March 1, 2016 11:00 PM
To: Brad Willson; ipm...@li...
Subject: RE: [Ipmitool-devel] Preserving SEL date/time stamps across a clear event


Hi Brad,



Short answer: not possible

Long answer (quote from the IPMI Spec. Section 31.6 Add SEL Entry Command):

…

Records are added on after the last record in the SEL. The SEL Device adds the timestamp according to the SEL Record Type (see 31.6.1, SEL Record Type Ranges, following) when it creates the record. Thus, in some cases the timestamp bytes in the record data are ignored. However, ‘dummy’ timestamp bytes must still be present in the data.



Holger



From: Brad Willson [mailto:Br...@sy...]
Sent: Tuesday, March 01, 2016 7:51 PM
To: ipm...@li...
Subject: Re: [Ipmitool-devel] Preserving SEL date/time stamps across a clear event



Changing this up a little, reading the man page one might think 'sel readraw file' would inject entries into the SEL with time stamps intact but that is not the case.  Is there a method to inject events into the SEL, to basically restore from a previously saved raw dump?



Thank you,

Brad



________________________________

From: Brad Willson <Br...@sy...<mailto:Br...@sy...>>
Sent: Monday, February 29, 2016 4:14 PM
To: ipm...@li...<mailto:ipm...@li...>
Subject: [Ipmitool-devel] Preserving SEL date/time stamps across a clear event



Hi,



The objective here is to save the SEL to a file before an event that clears it, then repopulate it from the saved file then continue logging events from that point on with appropriate date/time stamps.  The problem (perceived) is that ipmitool sel add file resets previously recorded date/time stamps to the current date and time effectively debasing the integrity of the log.



ipmitool version 1.8.15



Steps to reproduce:



ipmitool sel list

   a | 02/29/2016 | 22:06:33 | Event Logging Disabled #0x8c | Log area reset/cleared | Asserted

   b | 02/29/2016 | 22:19:42 | Other Units-based Sensor #0xa0 | State Asserted | Asserted

   c | 02/29/2016 | 22:19:43 | System Boot Initiated #0x87 | System Restart | Asserted

   d | 02/29/2016 | 22:20:06 | System Event #0x8e | Timestamp Clock Sync | Asserted

   e | 02/29/2016 | 22:20:08 | System Event #0x8e | Timestamp Clock Sync | Asserted

   f | 02/29/2016 | 22:20:51 | System Event #0x8f | OEM System boot event | Asserted

  10 | 02/29/2016 | 22:21:01 | System ACPI Power State #0x88 | S0/G0: working | Asserted



ipmitool sel clear

Clearing SEL.  Please allow a few seconds to erase.



ipmitool sel add sel_save

   0 |  Pre-Init  |0000000000| Event Logging Disabled #0x8c | Log area reset/cleared | Asserted

   0 |  Pre-Init  |0000000000| Other Units-based Sensor #0xa0 | State Asserted | Asserted

   0 |  Pre-Init  |0000000000| System Boot Initiated #0x87 | System Restart | Asserted

   0 |  Pre-Init  |0000000000| System Event #0x8e | Timestamp Clock Sync | Asserted

   0 |  Pre-Init  |0000000000| System Event #0x8e | Timestamp Clock Sync | Asserted

   0 |  Pre-Init  |0000000000| System Event #0x8f | OEM System boot event | Asserted

   0 |  Pre-Init  |0000000000| System ACPI Power State #0x88 | S0/G0: working | Asserted



ipmitool sel list

  11 | 02/29/2016 | 22:22:37 | Event Logging Disabled #0x8c | Log area reset/cleared | Asserted

  12 | 02/29/2016 | 22:22:48 | Event Logging Disabled #0x8c | Log area reset/cleared | Asserted

  13 | 02/29/2016 | 22:22:48 | Other Units-based Sensor #0xa0 | State Asserted | Asserted

  14 | 02/29/2016 | 22:22:48 | System Boot Initiated #0x87 | System Restart | Asserted

  15 | 02/29/2016 | 22:22:48 | System Event #0x8e | Timestamp Clock Sync | Asserted

  16 | 02/29/2016 | 22:22:48 | System Event #0x8e | Timestamp Clock Sync | Asserted

  17 | 02/29/2016 | 22:22:48 | System Event #0x8f | OEM System boot event | Asserted

  18 | 02/29/2016 | 22:22:48 | System ACPI Power State #0x88 | S0/G0: working | Asserted



This smells like a bug to me but I wanted to check with the experts before I proceed.



Thank you,

Brad