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Bug #8244

Some drives report a bogus reference temperature

Added by Andrew Stormont over 2 years ago. Updated over 2 years ago.

Status:
In Progress
Priority:
Normal
Assignee:
-
Category:
-
Start date:
2017-05-17
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage

Description

Some drives have firmware that reports a reference temperature which is not just incorrect but unreasonably low. This causes FMA to fault drives even when their temperature is well within safe limits. In the affected drives from Segate and Western Digital this value is set to 40 degrees. This differs from the value used internally by PFA which is 60 degrees.

The solution I propose is that we tweak the logic in FMA so that the reference temperature is only used if it's above 40 degrees, otherwise we use a substitute value of 60 degrees, which is the true reference temperature of these particular drives. This is also likely to be the case for other drives reporting a reference temperature which is suspiciously low.


Related issues

Related to illumos gate - Bug #7327: fmd should not retire a disk when its reference temperature is exceededNew2016-08-26

Actions
Related to illumos gate - Bug #10255: SES temperature thresholds 20 degrees too hotClosed2019-01-16

Actions

History

#1

Updated by Andrew Stormont over 2 years ago

  • Related to Bug #7327: fmd should not retire a disk when its reference temperature is exceeded added
#3

Updated by Andrew Stormont over 2 years ago

  • Description updated (diff)
#4

Updated by Andrew Stormont over 2 years ago

  • Description updated (diff)
#5

Updated by Joshua M. Clulow 7 months ago

  • Related to Bug #10255: SES temperature thresholds 20 degrees too hot added

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