Discussion:
Flashing HDD service LEDs on Xnnnn systems
Dale Ghent
2010-02-12 05:25:20 UTC
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Hey all

I have a question regarding FMA and the triggering of the amber service LEDs (and perhaps, the OK2RM blue LEDs) on Sun X-series systems.

Bear in mind that my X-series servers all run Solaris 10, not OpenSolaris... haven't had the time to get one installed since I currently lack a usable AI infrastructure.

When a hard drive goes bad, and goes bad to the point where ZFS rejects it and/or it triggers enough warnings in the sd driver that signifies that the drive is otherwise unusable, the service LEDs that are present in the questionable drive's drive slot do not illuminate. The only time the service or the blue OK2RM LEDs are illuminated is if one goes into the ILOM and sets them to the unintuitive value of "fast_blink". This is what I've had to do in order to guide my people in the data center to the correct disk when they receive a replacement part.

So it appears that this feature of the X-series hardware goes essentially unused unless someone manually intervenes inside ILOM.

I guess my questions are:

1) Does or will FMA in Solaris 10 or OpenSolaris know of and can manipulate the HDD-specific Service LED?

2) Could or should cfgadm be more robust and turn on the OK2RM LED?

3) Is there a facility in the OS userland or the kernel (aside from the cumbersome ipmitool) that would allow a program, and hence an admin, to see the state of these LEDs and manipulate them?

/dale

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