Add poolpath option

README

@@ -59,11 +59,12 @@ PREREQUISITES:
   if you wish to purge old snapshots, do that first.
 6. zfs allow any additional permissions needed, to fix any errors produced in step 5
 7. configure the TAG/PROP/REMUSER/REMHOST/REMPOOL variables in this script or in a config file
-8. zfs set $PROP={ fullpath | basename | rootfs } pool/fs
+8. zfs set $PROP={ poolpath | fullpath | basename | rootfs } pool/fs
   for each FS or volume you wish to back up.
 
 PROPERTY VALUES:
 Given the hierarchy pool/a/b,
+* with 'poolpath' (zfs recv -d), this is replicated to backupserver:backuppool/pool/a/b
 * with 'fullpath' (zfs recv -d), this is replicated to backupserver:backuppool/a/b
 * with 'basename' (zfs recv -e), this is replicated to backupserver:backuppool/b
   This is useful for replicating a sub-level FS into the top level of the backup pool;

zfs-backup.sh

@@ -159,6 +159,9 @@ do_backup() {
 		;;
 	-d)	TARGET="$REMPOOL/$FS"
 		;;
+	-p)	TARGET="$REMPOOL/$DATASET"
+		RECV_OPT="-d"
+		;;
 	rootfs)	if [ "$DATASET" = "$(basename $DATASET)" ]; then
 		    TARGET="$REMPOOL"
 		    RECV_OPT="-d"
@@ -297,8 +300,12 @@ do
     case $value in
     # property values:
     #   Given the hierarchy pool/a/b,
+    #   * poolpath: replicate to backuppool/pool/a/b
     #   * fullpath: replicate to backuppool/a/b
     #   * basename: replicate to backuppool/b
+	poolpath) [ $VERBOSE ] && printf "\n$dataset:\n"
+	    do_backup $dataset -p
+		;;
 	fullpath) [ $VERBOSE ] && printf "\n$dataset:\n"
 	    do_backup $dataset -d
 		;;