Open ddrescueview only once per BlockPair

scripts/wk/clone/ddrescue.py

@@ -146,6 +146,7 @@ class BlockPair():
       'scrape':     'Pending',
       })
     self.view_map = 'DISPLAY' in os.environ or 'WAYLAND_DISPLAY' in os.environ
+    self.view_proc = None
 
     # Set map path
     # e.g. '(Clone|Image)_Model[_p#]_Size[_Label].map'
@@ -2088,8 +2089,8 @@ def run_ddrescue(state, block_pair, pass_name, settings, dry_run=True):
 
   # Start ddrescue and ddrescueview (if enabled)
   proc = exe.popen_program(cmd)
-  if block_pair.view_map:
-    exe.popen_program(
+  if block_pair.view_map and not block_pair.view_proc:
+    block_pair.view_proc = exe.popen_program(
       ['ddrescueview', '-r', '5s', block_pair.map_path],
       pipe=True,
       )