fix failure when psutil read info and the process is gone

slapos/grid/utils.py

@@ -428,16 +428,21 @@ def checkPromiseList(promise_dir, promise_timeout, uid=None, gid=None, cwd=None,
       for current_increment in range(0, increment_limit):
         if process_handler.poll() is None:
           if check_profile:
+            try:
+              io_counter = psutil_process.io_counters()
               logger.debug(
                 "[t=%ss] CPU: %s%%, MEM: %s MB (%s%%), DISK: %s Read - %s Write" % (
                   current_increment * sleep_time,
                   psutil_process.cpu_percent(),
                   psutil_process.memory_info().rss / float(2 ** 20),
                   round(psutil_process.memory_percent(), 4),
-                psutil_process.io_counters().read_count,
-                psutil_process.io_counters().write_count
+                  io_counter.read_count,
+                  io_counter.write_count
                 )
               )
+            except (psutil.AccessDenied, psutil.NoSuchProcess):
+              # defunct process will raise AccessDenied
+              pass
           time.sleep(sleep_time)
           continue
         result_dict["execution-time"] = current_increment * sleep_time

slapos/tests/grid_utils.py

@@ -37,6 +37,7 @@ class TestGridUtils(unittest.TestCase):
     """
     script = """#!/bin/sh
 echo "%(name)s"
+sleep 0.1
 exit %(code)s
 """
     root_directory = tempfile.mkdtemp()
@@ -74,6 +75,7 @@ exit %(code)s
     """
     script = """#!/bin/sh
 echo "%(name)s"
+sleep 0.1
 exit %(code)s
 """
     root_directory = tempfile.mkdtemp()
@@ -104,6 +106,7 @@ exit %(code)s
     """
     script = """#!/bin/sh
 echo "%(name)s"
+sleep 0.1
 exit %(code)s
 """
     root_directory = tempfile.mkdtemp()