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

Buterbaugh, Kevin L Kevin.Buterbaugh at Vanderbilt.Edu
Thu Sep 27 22:52:01 BST 2018


Hi Aaron,

No … just plain old ethernet.  Thanks!

Kevin

—
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

On Sep 27, 2018, at 11:03 AM, Aaron Knister <aaron.s.knister at nasa.gov<mailto:aaron.s.knister at nasa.gov>> wrote:

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> <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
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