(Backport 52150) mdadm_raid: Optionally ignore errors on examine.

salt/modules/mdadm_raid.py

@@ -360,17 +360,25 @@ def assemble(name,
         return __salt__['cmd.run'](cmd, python_shell=False)
 
 
-def examine(device):
+def examine(device, quiet=False):
     '''
     Show detail for a specified RAID component device
 
+    device
+        Device to examine, that is part of the RAID
+
+    quiet
+        If the device is not part of the RAID, do not show any error
+
     CLI Example:
 
     .. code-block:: bash
 
         salt '*' raid.examine '/dev/sda1'
     '''
-    res = __salt__['cmd.run_stdout']('mdadm -Y -E {0}'.format(device), output_loglevel='trace', python_shell=False)
+    res = __salt__['cmd.run_stdout']('mdadm -Y -E {0}'.format(device),
+                                     python_shell=False,
+                                     ignore_retcode=quiet)
     ret = {}
 
     for line in res.splitlines():

salt/states/mdadm_raid.py

@@ -98,7 +98,7 @@ def present(name,
         if dev == 'missing' or not __salt__['file.access'](dev, 'f'):
             missing.append(dev)
             continue
-        superblock = __salt__['raid.examine'](dev)
+        superblock = __salt__['raid.examine'](dev, quiet=True)
 
         if 'MD_UUID' in superblock:
             uuid = superblock['MD_UUID']

tests/unit/modules/test_mdadm_raid.py

@@ -75,3 +75,26 @@ def test_create_test_mode(self):
                               '--force -l 5 -e default -n 3 '
                               '/dev/sdb1 /dev/sdc1 /dev/sdd1'.split()), sorted(ret.split()))
             assert not mock.called, 'test mode failed, cmd.run called'
+
+    def test_examine(self):
+        '''
+        Test for mdadm_raid.examine
+        '''
+        mock = MagicMock(return_value='ARRAY /dev/md/pool metadata=1.2 UUID=567da122:fb8e445e:55b853e0:81bd0a3e name=positron:pool')
+        with patch.dict(mdadm.__salt__, {'cmd.run_stdout': mock}):
+            self.assertEqual(mdadm.examine('/dev/md0'),
+                             {
+                                 'ARRAY /dev/md/pool metadata': '1.2 UUID=567da122:fb8e445e:55b853e0:81bd0a3e name=positron:pool'
+                             })
+            mock.assert_called_with('mdadm -Y -E /dev/md0', ignore_retcode=False,
+                                    python_shell=False)
+
+    def test_examine_quiet(self):
+        '''
+        Test for mdadm_raid.examine
+        '''
+        mock = MagicMock(return_value='')
+        with patch.dict(mdadm.__salt__, {'cmd.run_stdout': mock}):
+            self.assertEqual(mdadm.examine('/dev/md0', quiet=True), {})
+            mock.assert_called_with('mdadm -Y -E /dev/md0', ignore_retcode=True,
+                                    python_shell=False)