feat: dont list datasets if there are many

snapshots/snapshot.py

@@ -159,6 +159,27 @@ class PDGSnapshot:
             print(f"{Colors.RED}✗ No ZFS datasets found{Colors.ENDC}")
             return None
         
+        # If too many datasets, ask for manual input
+        if len(datasets) > 100:
+            print(f"\n{Colors.YELLOW}Found {len(datasets)} datasets - too many to list{Colors.ENDC}")
+            print(f"{Colors.DIM}Tip: Use 'zfs list' to see all available datasets{Colors.ENDC}")
+            
+            while True:
+                dataset = input(f"\n{Colors.BOLD}Enter dataset name: {Colors.ENDC}").strip()
+                if not dataset:
+                    return None
+                
+                # Check if dataset exists
+                success, _ = self.run_command(f"zfs list {dataset}")
+                if success:
+                    return dataset
+                else:
+                    print(f"{Colors.RED}✗ Dataset '{dataset}' not found{Colors.ENDC}")
+                    retry = input(f"{Colors.DIM}Try again? (y/n): {Colors.ENDC}").lower()
+                    if retry != 'y':
+                        return None
+        else:
+            # Show numbered list for reasonable amount of datasets
             print(f"\n{Colors.BOLD}Available ZFS Datasets:{Colors.ENDC}")
             for i, dataset in enumerate(datasets, 1):
                 print(f"{Colors.CYAN}{i:2d}.{Colors.ENDC} {dataset}")