Template: nfs-kernel-server/sync-default Type: note Description: NFS server defaults to synchronous writes To comply with standards and increase data safety, the Linux NFS server now defaults to synchronous writes. Since this is a major change, it is not silent: All exports should be explicitly marked as either "sync" or "async". Exports not so marked will elicit warnings. Template: nfs-kernel-server/tcpwrappers-mountd Type: note Description: in /etc/hosts.{allow,deny}, replace "rpc.mountd" with "mountd" The mount daemon uses tcpwrappers to control access. To configure it, use program name "mountd" in /etc/hosts.allow and /etc/hosts.deny. . Older versions of nfs-kernel-server included a mount daemon that called itself "rpc.mountd". Therefore, you should replace all occurrences of "rpc.mountd" with "mountd" in /etc/hosts.allow and /etc/hosts.deny.