Add backup_named_volumes.sh

backup_named_volumes.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# Auto-elevate if not root
+if [[ "$EUID" -ne 0 ]]; then
+  echo "This script needs root to access Docker volumes. Re-running with sudo..."
+  exec sudo "$0" "$@"
+fi
+
+set -euo pipefail
+
+WORKDIR="$(pwd)"
+COMPOSE_FILE="${WORKDIR}/docker-compose.yml"
+
+if [[ ! -f "$COMPOSE_FILE" ]]; then
+  echo "❌ No docker-compose.yml found in $WORKDIR"
+  exit 1
+fi
+
+# Original user info (for restoring file ownership)
+ORIGINAL_USER="${SUDO_USER:-$USER}"
+ORIGINAL_UID=$(id -u "$ORIGINAL_USER")
+ORIGINAL_GID=$(id -g "$ORIGINAL_USER")
+
+# Determine the project name (same as docker-compose uses)
+PROJECT_NAME=$(basename "$WORKDIR")
+
+echo "📦 Working in (${PROJECT_NAME})"
+
+# Get all services using yq
+SERVICE_NAMES=$(yq e '.services | keys | .[]' "$COMPOSE_FILE")
+
+for SERVICE in $SERVICE_NAMES; do
+  echo "🔍 Found service (${SERVICE})"
+
+  # Get the volumes for the service
+  VOLUMES=$(yq e ".services.${SERVICE}.volumes[]" "$COMPOSE_FILE" 2>/dev/null || true)
+
+  while IFS= read -r VOLUME; do
+    # Clean up quotes and whitespace
+    VOLUME=$(echo "$VOLUME" | sed 's/^"//;s/"$//;s/^[[:space:]]*//;s/[[:space:]]*$//')
+
+    # Skip bind mounts
+    if [[ "$VOLUME" == ./* || "$VOLUME" == /* ]]; then
+      continue
+    fi
+
+    # Get the source volume name (before colon)
+    SOURCE=$(echo "$VOLUME" | cut -d':' -f1)
+
+    echo "📁 Found named volume (${SOURCE})"
+
+    # Prompt the user
+    read -rp "→ Would you like to tar.gz and save to this location as ${SOURCE}.tar.gz? (Y/n) " REPLY
+    REPLY=${REPLY:-Y}
+
+    if [[ "$REPLY" =~ ^[Yy]$ ]]; then
+      VOLUME_PATH="/var/lib/docker/volumes/${PROJECT_NAME}_${SOURCE}/_data"
+
+      if [[ ! -d "$VOLUME_PATH" ]]; then
+        echo "⚠️  Volume path $VOLUME_PATH not found! Skipping..."
+        continue
+      fi
+
+      OUTPUT_FILE="${WORKDIR}/${SOURCE}.tar.gz"
+
+      echo "📦 Backing up $VOLUME_PATH to $OUTPUT_FILE"
+
+      # Create tar as original user
+      sudo -u "$ORIGINAL_USER" tar -czf "$OUTPUT_FILE" -C "$VOLUME_PATH" .
+
+      # Ensure file is owned properly
+      chown "$ORIGINAL_UID:$ORIGINAL_GID" "$OUTPUT_FILE"
+
+      echo "✅ Backup complete: $OUTPUT_FILE"
+    else
+      echo "⏭️  Skipping ${SOURCE}"
+    fi
+
+  done <<< "$VOLUMES"
+done