Use just IMAGE_PREFIX, not IMAGE_PREFIX+"one"

opennebula/remotes/tm/vitastor/delete

@@ -57,7 +57,7 @@ if [ `is_disk $DST_PATH` -eq 0 ]; then
     SRC="${XPATH_ELEMENTS[j++]}"
     CLONE="${XPATH_ELEMENTS[j++]}"
     VITASTOR_CONF="${XPATH_ELEMENTS[j++]}"
-    IMAGE_PREFIX="${XPATH_ELEMENTS[j++]}"
+    IMAGE_PREFIX="${XPATH_ELEMENTS[j++]:-one}"
     POOL_NAME="${XPATH_ELEMENTS[j++]}"
 
     CLI=vitastor-cli
@@ -65,7 +65,7 @@ if [ `is_disk $DST_PATH` -eq 0 ]; then
         CLI="$CLI --config_path ${VITASTOR_CONF}"
     fi
 
-    SRC_CHECKPOINT="${IMAGE_PREFIX}one-sys-${VM_ID}-checkpoint"
+    SRC_CHECKPOINT="${IMAGE_PREFIX}-sys-${VM_ID}-checkpoint"
 
     ssh_exec_and_log "$DST_HOST" "$CLI rm $SRC_CHECKPOINT 2>/dev/null || exit 0" \
         "Error deleting $SRC_CHECKPOINT in $DST_HOST"
@@ -95,7 +95,7 @@ done < <(onevm show -x $VM_ID | $XPATH \
 SRC="${XPATH_ELEMENTS[j++]}"
 CLONE="${XPATH_ELEMENTS[j++]}"
 VITASTOR_CONF="${XPATH_ELEMENTS[j++]}"
-IMAGE_PREFIX="${XPATH_ELEMENTS[j++]}"
+IMAGE_PREFIX="${XPATH_ELEMENTS[j++]:-one}"
 POOL_NAME="${XPATH_ELEMENTS[j++]}"
 
 if is_undeployed "$VM_ID" "$DST_HOST"; then
@@ -124,7 +124,7 @@ if [ -n "$SRC" ]; then
     SRC_IMAGE="${SRC}-${VM_ID}-${DISK_ID}"
 else
     # volatile
-    SRC_IMAGE="${IMAGE_PREFIX}one-sys-${VM_ID}-${DISK_ID}"
+    SRC_IMAGE="${IMAGE_PREFIX}-sys-${VM_ID}-${DISK_ID}"
 fi
 
 # Delete the image