diff --git a/os_brick/initiator/linuxscsi.py b/os_brick/initiator/linuxscsi.py
index 74eec5002..3c42f0aa7 100644
--- a/os_brick/initiator/linuxscsi.py
+++ b/os_brick/initiator/linuxscsi.py
@@ -128,16 +128,34 @@ class LinuxSCSI(executor.Executor):
         if wwid and glob_str + wwid in wwn_paths:
             return wwid
 
-        # If we have multiple designators follow the symlinks
+        # If we have multiple designators use symlinks to find out the wwn
+        device_names = set(device_names)
         for wwn_path in wwn_paths:
             try:
                 if os.path.islink(wwn_path) and os.stat(wwn_path):
                     path = os.path.realpath(wwn_path)
-                    if path.startswith('/dev/') and path[5:] in device_names:
-                        return wwn_path[len(glob_str):]
+                    if path.startswith('/dev/'):
+                        name = path[5:]
+                        # Symlink may point to the multipath dm if the attach
+                        # was too fast or we took long to check it. Check
+                        # devices belonging to the multipath DM.
+                        if name.startswith('dm-'):
+                            # Get the devices that belong to the DM
+                            slaves_path = '/sys/class/block/%s/slaves' % name
+                            dm_devs = os.listdir(slaves_path)
+                            # This is the right wwn_path if the devices we have
+                            # attached belong to the dm we followed
+                            if device_names.intersection(dm_devs):
+                                break
+
+                        # This is the right wwn_path if  devices we have
+                        elif name in device_names:
+                            break
             except OSError:
                 continue
-        return ''
+        else:
+            return ''
+        return wwn_path[len(glob_str):]
 
     def get_sysfs_wwid(self, device_names):
         """Return the wwid from sysfs in any of devices in udev format."""
diff --git a/os_brick/tests/initiator/test_linuxscsi.py b/os_brick/tests/initiator/test_linuxscsi.py
index 1f2c9afc7..13d806aa4 100644
--- a/os_brick/tests/initiator/test_linuxscsi.py
+++ b/os_brick/tests/initiator/test_linuxscsi.py
@@ -874,25 +874,53 @@ loop0                                     0"""
         glob_mock.assert_called_once_with('/dev/disk/by-id/scsi-*')
         get_wwid_mock.assert_called_once_with(mock.sentinel.device_names)
 
+    @mock.patch('os.listdir', return_value=['sda', 'sdd'])
     @mock.patch('os.path.realpath', side_effect=('/other/path',
+                                                 '/dev/dm-5',
                                                  '/dev/sda', '/dev/sdb'))
-    @mock.patch('os.path.islink', side_effect=(False, True, True, True, True))
-    @mock.patch('os.stat', side_effect=(False, True, True, True))
+    @mock.patch('os.path.islink', side_effect=(False,) + (True,) * 5)
+    @mock.patch('os.stat', side_effect=(False,) + (True,) * 4)
     @mock.patch('glob.glob')
     @mock.patch.object(linuxscsi.LinuxSCSI, 'get_sysfs_wwid')
     def test_get_sysfs_wwn_multiple_designators(self, get_wwid_mock, glob_mock,
                                                 stat_mock, islink_mock,
-                                                realpath_mock):
+                                                realpath_mock, listdir_mock):
         glob_mock.return_value = ['/dev/disk/by-id/scsi-fail-link',
                                   '/dev/disk/by-id/scsi-fail-stat',
                                   '/dev/disk/by-id/scsi-non-dev',
+                                  '/dev/disk/by-id/scsi-another-dm',
                                   '/dev/disk/by-id/scsi-wwid1',
                                   '/dev/disk/by-id/scsi-wwid2']
+
         get_wwid_mock.return_value = 'pre-wwid'
         devices = ['sdb', 'sdc']
         res = self.linuxscsi.get_sysfs_wwn(devices)
         self.assertEqual('wwid2', res)
         glob_mock.assert_called_once_with('/dev/disk/by-id/scsi-*')
+        listdir_mock.assert_called_once_with('/sys/class/block/dm-5/slaves')
+        get_wwid_mock.assert_called_once_with(devices)
+
+    @mock.patch('os.listdir', side_effect=[['sda', 'sdb'], ['sdc', 'sdd']])
+    @mock.patch('os.path.realpath', side_effect=('/dev/sde',
+                                                 '/dev/dm-5',
+                                                 '/dev/dm-6'))
+    @mock.patch('os.path.islink', mock.Mock())
+    @mock.patch('os.stat', mock.Mock())
+    @mock.patch('glob.glob')
+    @mock.patch.object(linuxscsi.LinuxSCSI, 'get_sysfs_wwid', return_value='')
+    def test_get_sysfs_wwn_dm_link(self, get_wwid_mock, glob_mock,
+                                   realpath_mock, listdir_mock):
+        glob_mock.return_value = ['/dev/disk/by-id/scsi-wwid1',
+                                  '/dev/disk/by-id/scsi-another-dm',
+                                  '/dev/disk/by-id/scsi-our-dm']
+
+        devices = ['sdc', 'sdd']
+        res = self.linuxscsi.get_sysfs_wwn(devices)
+        self.assertEqual('our-dm', res)
+        glob_mock.assert_called_once_with('/dev/disk/by-id/scsi-*')
+        listdir_mock.assert_has_calls(
+            [mock.call('/sys/class/block/dm-5/slaves'),
+             mock.call('/sys/class/block/dm-6/slaves')])
         get_wwid_mock.assert_called_once_with(devices)
 
     @mock.patch('os.path.realpath', side_effect=('/dev/sda', '/dev/sdb'))
@@ -911,6 +939,16 @@ loop0                                     0"""
         glob_mock.assert_called_once_with('/dev/disk/by-id/scsi-*')
         get_wwid_mock.assert_called_once_with(devices)
 
+    @mock.patch('glob.glob', return_value=[])
+    @mock.patch.object(linuxscsi.LinuxSCSI, 'get_sysfs_wwid')
+    def test_get_sysfs_wwn_no_links(self, get_wwid_mock, glob_mock):
+        get_wwid_mock.return_value = ''
+        devices = ['sdc']
+        res = self.linuxscsi.get_sysfs_wwn(devices)
+        self.assertEqual('', res)
+        glob_mock.assert_called_once_with('/dev/disk/by-id/scsi-*')
+        get_wwid_mock.assert_called_once_with(devices)
+
     @ddt.data({'wwn_type': 't10.', 'num_val': '1'},
               {'wwn_type': 'eui.', 'num_val': '2'},
               {'wwn_type': 'naa.', 'num_val': '3'})
diff --git a/releasenotes/notes/improve-get_sysfs_wwn-df38ea88cdcdcc94.yaml b/releasenotes/notes/improve-get_sysfs_wwn-df38ea88cdcdcc94.yaml
new file mode 100644
index 000000000..443c124df
--- /dev/null
+++ b/releasenotes/notes/improve-get_sysfs_wwn-df38ea88cdcdcc94.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Improve WWN detection for arrays with multiple designators.
+    (bug 1881608).