I'm hopeful somebody can give me direction on this, I've been searching for over a week for a solution and have turned up nil. Thanks for looking! I'm trying to rsync with options --acls --xattrs over an NFSv4 mount TO an ext4 drive FROM an ext4 drive and both have acl and user_xattr enabled. The command: rsync -aAX /data/ /mnt/back/data results in: rsync: rsync_xal_set: lsetxattr(""/mnt/back/data/Users/user/Documents/Desktop"","security.NTACL") failed: Operation not supported (95) along with all the other files. Running the same command to a local folder works perfect so I'm assuming it has something to do with NFS4 or EXT4 on the Server side. My fstab mount: UUID=732683f0-e6ac-42d6-a492-e07643d7719c /media/back ext4 defaults,acl,user_xattr,barrier=1 0 0 My nfs exports file: /media/back 10.111.106.3(fsid=0,rw,async,no_root_squash,no_subtree_check) My mount command: mount -t nfs4 -o proto=tcp,port=2049 10.111.106.12:/ /mnt/back Version info: Server Ubuntu 14.04.2 Client Ubuntu 14.04.2 rsync 3.1.0 Thanks for any suggestions! -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html