$ monmaptool --create --add foo 2.3.4.5:6789 mymonmap monmaptool: monmap file mymonmap monmaptool: generated fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re) monmaptool: writing epoch 0 to mymonmap (1 monitors) $ ORIG_FSID="$(monmaptool --print mymonmap|grep ^fsid)" $ monmaptool --create mymonmap monmaptool: monmap file mymonmap monmaptool: mymonmap exists, --clobber to overwrite [255] # hasn't changed yet $ monmaptool --print mymonmap monmaptool: monmap file mymonmap epoch 0 fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re) last_changed \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+ (re) created \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+ (re) min_mon_release 0 (unknown) 0: v1:2.3.4.5:6789/0 mon.foo $ NEW_FSID="$(monmaptool --print mymonmap|grep ^fsid)" $ [ "$ORIG_FSID" = "$NEW_FSID" ] $ monmaptool --create --clobber mymonmap monmaptool: monmap file mymonmap monmaptool: generated fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re) monmaptool: writing epoch 0 to mymonmap (0 monitors) $ NEW_FSID="$(monmaptool --print mymonmap|grep ^fsid)" $ [ "$ORIG_FSID" != "$NEW_FSID" ] $ monmaptool --print mymonmap monmaptool: monmap file mymonmap epoch 0 fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re) last_changed \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+ (re) created \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d+ (re) min_mon_release 0 (unknown)