Easy enough fix, see this patch: https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/470892 Note that with V2.8 out and V2.9 coming soon, we will not be doing any updates to V2.7-stable branch. It’s strongly recommended that you move to V2.8.2 or later. Thanks Frank From: Rungta, Vandana [mailto:vrungta@amazon.com] Sent: Wednesday, October 9, 2019 1:46 PM To: devel@lists.nfs-ganesha.org Subject: [NFS-Ganesha-Devel] RHEL 7.2 clients cannot use NFS 4.1 to Nfs Ganesha 2.7.6 shares Hello, With Nfs Ganesha 2.7.6 when we use NFS clients on older kernels ( RHEL 7.2 – 3.10.0-327.el7.x86_64 ) to mount a share using NFS vers=4.1 all file operations fail. Clients can navigate directories, but cannot read/write data to any file. Open fails because the older kernel cannot handle OPEN_DELEGATE_NONE_EXT specified in the Open response. If OPEN_DELEGATE_NONE_EXT was returned only when OPEN4_SHARE_ACCESS_WANT_XXX was specified, then we could be backwards compatible. With Nfs Ganesha 2.5.x ( no delegation support), NFS clients on the older kernels can successfully mount and use the share with NFS vers 4.1 ( Also reported here: https://lists.nfs-ganesha.org/archives/list/devel@lists.nfs-ganesha.org/thre... ) Thoughts? Thanks, Vandana