make the volume scripts ignore ephemeral volumes

volume-utils.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+# Shared helpers for compose volume operations.
+# Ephemeral volumes (init-container config) are excluded from backup/restore/size.
+
+is_ephemeral_volume_key() {
+  local key=$1
+  local compose_file=$2
+
+  # op-node rollup config volumes
+  [[ "$key" == *_node_config ]] && return 0
+
+  if [[ -n "$compose_file" && -f "$compose_file" ]]; then
+    local ephemeral
+    ephemeral=$(yaml2json "$compose_file" 2>/dev/null | jq -r '.["x-ephemeral-volumes"] // [] | .[]' 2>/dev/null)
+    while IFS= read -r vol; do
+      [[ -z "$vol" ]] && continue
+      [[ "$key" == "$vol" ]] && return 0
+    done <<< "$ephemeral"
+  fi
+
+  return 1
+}
+
+get_volume_keys() {
+  local compose_file=$1
+  yaml2json "$compose_file" 2>/dev/null | jq -r '.volumes | keys[]' 2>/dev/null
+}
+
+get_persistent_volume_keys() {
+  local compose_file=$1
+  local key
+
+  while IFS= read -r key; do
+    [[ -z "$key" ]] && continue
+    if ! is_ephemeral_volume_key "$key" "$compose_file"; then
+      echo "$key"
+    fi
+  done < <(get_volume_keys "$compose_file")
+}