synology-thumbgen/nascleanup.sh

#!/bin/bash

# Enhanced NAS cleanup script with thumbnail protection
# Usage: ./nascleanup.sh /volume1/Hydra/path/to/directory

if [ $# -eq 0 ]; then
    echo "Usage: $0 <directory_path>"
    echo "Example: $0 /volume1/Hydra/Creative/artsy"
    exit 1
fi

TARGET_DIR="$1"

echo "=== Enhanced Synology Thumbnail Cleanup ==="
echo "Target directory: $TARGET_DIR"

# 1. Stop indexing services temporarily
echo "Stopping indexing services..."
sudo synoservicectl --stop synoindexd 2>/dev/null || true
sudo synoservicectl --stop pkgctl-SynoFinder 2>/dev/null || true

# 2. Clear indexing queue to prevent regeneration
echo "Clearing indexing queue..."
sudo rm -f /var/spool/syno_indexing_queue* 2>/dev/null || true

# 3. Dry-run check (see what @eaDir directories exist)
echo "=== Existing @eaDir directories ==="
find "$TARGET_DIR" -type d -name '@eaDir' -exec echo '{}' \;

# 4. Remove any existing @eaDir directories 
echo "=== Removing existing @eaDir directories ==="
find "$TARGET_DIR" -type d -name '@eaDir' -exec rm -rf '{}' \; 2>/dev/null || true

# 5. Rename eaDir_tmp to @eaDir (your custom thumbnails)
echo "=== Installing custom thumbnails ==="
find "$TARGET_DIR" -type d -name 'eaDir_tmp' -exec bash -c 'mv "$0" "${0%/*}/@eaDir"' {} \;

# 6. Protect custom thumbnails with read-only permissions
echo "=== Protecting custom thumbnails ==="
find "$TARGET_DIR" -type d -name '@eaDir' -exec chmod 555 '{}' \;
find "$TARGET_DIR" -path '*/@eaDir/*' -type f -exec chmod 444 '{}' \;

# 7. Create .noindex files to hint indexing services to avoid these directories
echo "=== Adding indexing exclusion hints ==="
find "$TARGET_DIR" -type d -name '@eaDir' -exec touch '{}/.noindex' \;

echo "=== Cleanup complete! ==="
echo "Note: Indexing services stopped. They may restart automatically."
echo "Run 'sudo synoservicectl --start synoindexd' if you need to re-enable indexing."