Add BLOB/large object verification script for backup diagnostics

verify_backup_blobs.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+# Verify that backup contains large objects (BLOBs)
+
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <backup_file.dump>"
+    echo "Example: $0 /var/lib/pgsql/db_backups/d7030.dump"
+    exit 1
+fi
+
+BACKUP_FILE="$1"
+
+if [ ! -f "$BACKUP_FILE" ]; then
+    echo "Error: File not found: $BACKUP_FILE"
+    exit 1
+fi
+
+echo "========================================="
+echo "Backup BLOB/Large Object Verification"
+echo "========================================="
+echo "File: $BACKUP_FILE"
+echo ""
+
+# Check if file is a valid PostgreSQL dump
+echo "1. Checking dump file format..."
+pg_restore -l "$BACKUP_FILE" > /dev/null 2>&1
+if [ $? -eq 0 ]; then
+    echo "   ✅ Valid PostgreSQL custom format dump"
+else
+    echo "   ❌ Not a valid pg_dump custom format file"
+    exit 1
+fi
+
+# List table of contents and look for BLOB entries
+echo ""
+echo "2. Checking for BLOB/Large Object entries..."
+BLOB_COUNT=$(pg_restore -l "$BACKUP_FILE" | grep -i "BLOB\|LARGE OBJECT" | wc -l)
+
+if [ $BLOB_COUNT -gt 0 ]; then
+    echo "   ✅ Found $BLOB_COUNT large object entries in backup"
+    echo ""
+    echo "   Sample entries:"
+    pg_restore -l "$BACKUP_FILE" | grep -i "BLOB\|LARGE OBJECT" | head -10
+else
+    echo "   ⚠️  No large object entries found"
+    echo "   This could mean:"
+    echo "   - Database has no large objects (normal)"
+    echo "   - Backup was created without --blobs flag (problem)"
+fi
+
+echo ""
+echo "3. Full table of contents summary..."
+pg_restore -l "$BACKUP_FILE" | tail -20
+
+echo ""
+echo "========================================="
+echo "Verification complete"
+echo "========================================="