[LU-17591] Seeing LNetError: 11e-e: Unexpected error -22 connecting to 10.90.1.35@tcp55 at host 10.90.1.35:988

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Affects Version/s: Lustre 2.15.4
• Labels: ornl
• Environment: Cray SLES clients
• Severity: 3
• Assignee: Peter Jones
• Reporter: James A Simmons

Description

With our 200GB production systems we moved recently to 2.15. One the clients we see the reported error for this ticket here:

LNetError: 11e-e: Unexpected error -22 connecting to NNNN at host XXXX

While lfs df seems to work on such clients we do see evictions from time to time.

2024-02-20T13:01:36.026377-05:00 XXXX kernel: Lustre: XXXXX-MDT0000: haven't heard from client d11610eb-9931-4127-ac5d-43ff433eab4e (at NNNN@tcp55) in 227 seconds. I think it's dead, and I am evicting it. exp 000000006594aa8b, cur 1708452096 expire 1708451946 last 1708451869

2024-02-20T13:01:36.026377-05:00 XXXXX- kernel: Lustre: XXXXX-MDT0000: haven't heard from client d11610eb-9931-4127-ac5d-43ff433eab4e (at NNNN@tcp55]) in 227 seconds. I think it's dead, and I am evicting it. exp 000000006594aa8b, cur 1708452096 expire 1708451946 last 1708451869

Normal ping works but we see lctl ping some time work and then at other times give an 

What information can I provide to resolve this. Also for this system we have accept=all.