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Cisco Bug: CSCup07488 - IPMI DIMM fault sensor is setting Dimm Degraded with no error count.

Last Modified

Jun 30, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(1.178)B 2.2(2.131)B 2.2(2.146)B 2.2(2.178)B 2.2(2.189)B 2.2(2c)B

Description (partial)

ECC sensors read Upper Non-Recoverable, without any record of ECC related SEL events in the log files.  PECI failures are usually present in /var/log/messages or in obfl/obfl.log.  Failing PECI transactions are not being handled correctly and bad data is being read by the ECC sensors. It will also set the DIMM to a Degraded state and the false alerts will appear in UCSM.

This occurs when failed PECI transactions are present on the blade, and commonly right after the host OS is booting.  Frequently during the first scan of the ECC sensors.
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