Some parts of the GPFS file system have special handling for SMB server processes. That was done by recognizing processes with the name "smbd". With the change of process names through commit 5955dc1e4fd that no longer applies. Fix this by having each smbd process register itself through the GPFS API.
This bug was referenced in samba master: 34b9c54ff2f089dbffe65bdc69f3024b5d3efd5c 3b72136f6782d9704a197ab7b17201df6ff4d60d
Created attachment 17953 [details] Patches for 4.18
Pushed to autobuild-v4-18-test.
This bug was referenced in samba v4-18-test: 2492a18d7624054f65624203f69b86e3994c3bae ccb235c2f4e0a2e6007af6ca206a01a5a59ac09d
Closing out bug report. Thanks!
This bug was referenced in samba v4-18-stable (Release samba-4.18.4): 2492a18d7624054f65624203f69b86e3994c3bae ccb235c2f4e0a2e6007af6ca206a01a5a59ac09d