On Thu, Mar 20, 2014 at 12:42:55PM -0400, Joe Landman wrote:

>  Note:  if you do use the LSI 2208, get a copy of the sas2ircu, so you 
> can light up devices ID LEDs correctly (we are adapting something we 
> wrote on Linux a while ago to run on SmartOS to help users correctly 
> identify which drive is which as this turns out to be non trivial for 
> zfs and non-HW raid).

The correct place for this to live is in libtopo.  We've already done
the work to wire up mpt_sas to the topo functionality, so that the
disk-lights module will do the correct thing.  Most likely all that
would be required for this to work on your kit would be the creation of
a proper topo map (see the one for Joyent-Compute-Platform-1101 in
illumos).  Please do not use third-party utilities for this, especially
binary-only ones like LSI's.  Note also that the existing code should
work out of the box on any system that has expanders with ES targets
that correctly provide LED control (it's rare to find ones that don't);
the separate map is needed only for DA architectures.

If any of that is not working correctly on your systems, we should get
bugs filed and figure out what's wrong.

> We've had a few nasty surprises on BIOS revisions on SMC kit, in that 
> BIOS tables set during POST aren't always what one might expect.  Which 
> leads to some very interesting/painful crashes.

It's critical to validate the firmware versions that you use and force
your vendor to deliver only those versions, regardless of who the vendor
is.  As you well know, locking firmware revisions is pretty much the
first and most basic aspect of vendor management one learns. :)


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