[Bug 293691] NFSv4.1 client trying to set |FATTR4_ARCHIVE| gets EPERM for file/dir creation attempts

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 09 Mar 2026 16:38:15 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293691

            Bug ID: 293691
           Summary: NFSv4.1 client trying to set |FATTR4_ARCHIVE| gets
                    EPERM for file/dir creation attempts
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: roland.mainz@nrubsig.org

FreeBSD installed from
FreeBSD-16.0-CURRENT-amd64-20260302-5d9b185c33ae-284268-disc1.iso

NFSv4.1 client trying to set |FATTR4_ARCHIVE| gets EPERM for file/dir creation
attempts.

This looks like a variation of
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292283 ("Bug 292283 - (JAVA)
NFSv4.1 client trying to set FATTR4_SYSTEM or FATTR4_HIDDEN gets EPERM for file
and dir creation attemps"), since the same workaround in the Windows
ms-nfs41-client NFSv4.1 client works if extended to |FATTR4_ARCHIVE| - see
https://github.com/kofemann/ms-nfs41-client/commit/7156d9f9deb25843e57fd455d8ec67951b82c737

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