Thanks. Yes that was it. The "could not find opname" messages were buried in the machine-specific logs (not the main "smbd.log" file), and I did not think to look for them.
I did check and the CentOS machine had the newer "unlinkat" type names, so that is why it did not start failing. Thanks for the assistance and sorry to bother you. ** Changed in: samba (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1950803 Title: Samba vfs_full_audit reports everything To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1950803/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs