On Thu, Jan 11, 2024 at 4:55 PM Jeff Layton <jlayton@xxxxxxxxxx> wrote: > On Thu, 2024-01-11 at 10:54 -0500, Jeff Layton wrote: > > On Sun, 2023-12-24 at 18:29 +0100, Roland Mainz wrote: > > > Are there any known issues with NFSv4.1 mandatory locking nfsd code in > > > the Linux 5.10.0-22-rt-amd64 kernel (technically the Debian Bullseye > > > RT kernel) ? Is there any kernel or NFS test suite module which covers > > > NFSv4.1 client mandatory locking ? > > > > Linux doesn't support mandatory locking at all since 2021 [1]. The Linux > > NFS client and server therefore do not support v4.1 mandatory locking. > > Forgot the footnote! > > [1]: https://patchwork.kernel.org/project/linux-fsdevel/patch/20210820114046.69282-1-jlayton@xxxxxxxxxx/ OK, this is pretty bad in terms of interoperability.... ;-( What should a Windows NFSv4 client (Hummingbird, OpenText, Exceed, ms-nfs41-client, ...) do in this case ? It basically means that locking for these clients will fail if the server does not support it... ;-( ---- Bye, Roland -- __ . . __ (o.\ \/ /.o) roland.mainz@xxxxxxxxxxx \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer /O /==\ O\ TEL +49 641 3992797 (;O/ \/ \O;)