[gpfsug-discuss] What is this error message telling me?

[Aaron Knister]

Kevin,

Is the communication in this case by chance using IPoIB in connected mode?

-Aaron

On 9/27/18 11:04 AM, Buterbaugh, Kevin L wrote:
> Hi All,
> 
> 2018-09-27_09:48:50.923-0500: [E] The TCP connection to IP address 
> 1.2.3.4 some client <c0n509> (socket 442) state is unexpected: 
> ca_state=1 unacked=3 rto=27008000
> 
> Seeing errors like the above and trying to track down the root cause.  I 
> know that at last weeks’ GPFS User Group meeting at ORNL this very error 
> message was discussed, but I don’t recall the details and the slides 
> haven’t been posted to the website yet.  IIRC, the “rto” is significant …
> 
> I’ve Googled, but haven’t gotten any hits, nor have I found anything in 
> the GPFS 4.2.2 Problem Determination Guide.
> 
> Thanks in advance…
> 
> —
> Kevin Buterbaugh - Senior System Administrator
> Vanderbilt University - Advanced Computing Center for Research and Education
> Kevin.Buterbaugh at vanderbilt.edu 
> <mailto:Kevin.Buterbaugh at vanderbilt.edu> - (615)875-9633
> 
> 
> 
> 
> 
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-- 
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776