Fix nfsd 4.19 upgrade problems

install.sh

@@ -135,4 +135,5 @@ install_exec fon/fon.sh                                  "$DESTDIR$usr_bindir/fo
 install_exec nfsdtop/nfsdtop                             "$DESTDIR$usr_sbindir/nfsdtop"
 install_data serial-log/serial-log\@.service             "$DESTDIR$systemdunitdir/serial-log@.service"
 install_exec serial-log/serial-log                       "$DESTDIR$usr_exec_prefix/libexec/serial-log"
+install_data misc_systemd_units/nfsd.service             "$DESTDIR$systemdunitdir/nfsd.service"
 exit

misc_systemd_units/nfsd.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=NFS Daemon
+ConditionPathExists=/etc/exports
+Requires=local-fs.target proc-fs-nfsd.mount var-lib-nfs-rpc_pipefs.mount unbound.service
+After=local-fs.target proc-fs-nfsd.mount var-lib-nfs-rpc_pipefs.mount unbound.service
+
+[Service]
+ExecStartPre=/bin/mkdir -p /var/lib/nfs/v4recovery
+ExecStartPre=/usr/sbin/exportfs -ra
+ExecStart=/usr/sbin/rpc.mountd --foreground --manage-gids
+ExecStartPost=/usr/sbin/rpc.nfsd --lease-time 90 --grace-time 90 --no-nfs-version 3 64 ; /usr/sbin/sm-notify
+ExecReload=/usr/sbin/exportfs -ra
+ExecStopPost=/usr/sbin/rpc.nfsd 0 ; /usr/sbin/exportfs -ua
+Restart=always
+
+[Install]
+WantedBy=multi-user.target