[fm-discuss] "PCE-E fabric" and "interconnect;lfu-l" errors

[Scott Davenport]

On Wed, 2008-04-09 at 10:56, Eric Sun wrote:
> Hi,
> 
> Recently we got some error from N2/VF system, if anyone on this board 
> could give a pointer as where to further FA is appreciated.
> 
> 1. On N2, Glendale, system panic due to "PCIe fabric".  On this system, 
> FEM (fabric express module) is not installed.

I don't know the specific layout of this system, but the T2 
(Niagara-2) has a built-in PIU. And if it's connected to at
least one PLX switch, that constitutes a fabric. 

Do you have more info you can share? The panic itself would produce
a general FMA message (SUNOS-8000-0G, IIRC) - basically saying the
system had to panic. But if the panic was due to HW problem, I would
expect subsequent telemetry and another diagnosis. Look for FMA
message codes in the /var/adm/messages file, check 'fmadm faulty',
or run an 'fmdump'.


> 2. On VF/Batoka, FMA logged 
> "fault.asic.ultraSPARC-T2plus.interconnect.lfu-f", any suggestion as 
> where FMA decument can be found on this error?

Each fault has a corresponding message id. That is printed to
the console and /var/adm/messages when the diagnosis is 
issued. This particular one is http://www.sun.com/msg/SUN4V-8001-UH.
But in short you've had a single lane failure on a VF coherency
channel.

-- scott
http://blogs.sun.com/sdaven