zfs send requiere -F para reemplazar dataset previo

zonebackuptozone.sh

@@ -73,7 +73,7 @@ send_snap ()
 {
     DATASET=$1
     echo "Sending snapshot to ${BACKUPZ}..."
-    zfs send zones/${DATASET}@`date +%Y%m%d` | ssh -i /usbkey/ssh/id_rsa -p 2221 $BACKUPZ zfs receive zones/${IDBACKUPZ}/data/${SOURCEGZ}/${DATASET}
+    zfs send zones/${DATASET}@`date +%Y%m%d` | ssh -i /usbkey/ssh/id_rsa -p 2221 $BACKUPZ zfs receive -F zones/${IDBACKUPZ}/data/${SOURCEGZ}/${DATASET}
     check_err
     echo "done."
 }