diff --git a/library/ceph_volume.py b/library/ceph_volume.py
index 9468a2012..6b3f7016a 100644
--- a/library/ceph_volume.py
+++ b/library/ceph_volume.py
@@ -114,6 +114,18 @@ options:
             - Only applicable if action is 'batch'.
         required: false
         default: -1
+    block_db_devices:
+        description:
+            - A list of devices for bluestore block db to pass to the 'ceph-volume lvm batch' subcommand.
+            - Only applicable if action is 'batch'.
+            - Only applicable if objectstore is 'bluestore'.
+        required: false
+    wal_devices:
+        description:
+            - A list of devices for bluestore block wal to pass to the 'ceph-volume lvm batch' subcommand.
+            - Only applicable if action is 'batch'.
+            - Only applicable if objectstore is 'bluestore'.
+        required: false
     report:
         description:
             - If provided the --report flag will be passed to 'ceph-volume lvm batch'.
@@ -320,10 +332,12 @@ def batch(module, container_image):
     cmd.extend(batch_devices)
 
     if block_db_devices and objectstore == 'bluestore':
-        cmd.extend(['--db-devices', ' '.join(block_db_devices)])
+        cmd.append('--db-devices')
+        cmd.extend(block_db_devices)
 
     if wal_devices and objectstore == 'bluestore':
-        cmd.extend(['--wal-devices', ' '.join(wal_devices)])
+        cmd.append('--wal-devices')
+        cmd.extend(wal_devices)
 
     return cmd
 
diff --git a/tests/library/test_ceph_volume.py b/tests/library/test_ceph_volume.py
index 1254c1c7a..917d94db7 100644
--- a/tests/library/test_ceph_volume.py
+++ b/tests/library/test_ceph_volume.py
@@ -344,3 +344,76 @@ class TestCephVolumeModule(object):
         result = ceph_volume.batch(
             fake_module, fake_container_image)
         assert result == expected_command_list
+
+    def test_batch_bluestore_with_dedicated_db(self):
+        fake_module = MagicMock()
+        fake_module.params = {'objectstore': 'bluestore',
+                              'block_db_size': '-1',
+                              'cluster': 'ceph',
+                              'batch_devices': ["/dev/sda", "/dev/sdb"],
+                              'block_db_devices': ["/dev/sdc", "/dev/sdd"]}
+
+        fake_container_image = None
+        expected_command_list = ['ceph-volume',
+                                 '--cluster',
+                                 'ceph',
+                                 'lvm',
+                                 'batch',
+                                 '--bluestore',
+                                 '--yes',
+                                 '/dev/sda',
+                                 '/dev/sdb',
+                                 '--db-devices',
+                                 '/dev/sdc',
+                                 '/dev/sdd']
+        result = ceph_volume.batch(
+            fake_module, fake_container_image)
+        assert result == expected_command_list
+
+    def test_batch_bluestore_with_dedicated_wal(self):
+        fake_module = MagicMock()
+        fake_module.params = {'objectstore': 'bluestore',
+                              'cluster': 'ceph',
+                              'block_db_size': '-1',
+                              'batch_devices': ["/dev/sda", "/dev/sdb"],
+                              'wal_devices': ["/dev/sdc", "/dev/sdd"]}
+
+        fake_container_image = None
+        expected_command_list = ['ceph-volume',
+                                 '--cluster',
+                                 'ceph',
+                                 'lvm',
+                                 'batch',
+                                 '--bluestore',
+                                 '--yes',
+                                 '/dev/sda',
+                                 '/dev/sdb',
+                                 '--wal-devices',
+                                 '/dev/sdc',
+                                 '/dev/sdd']
+        result = ceph_volume.batch(
+            fake_module, fake_container_image)
+        assert result == expected_command_list
+
+    def test_batch_bluestore_with_custom_db_size(self):
+        fake_module = MagicMock()
+        fake_module.params = {'objectstore': 'bluestore',
+                              'cluster': 'ceph',
+                              'block_db_size': '4096',
+                              'batch_devices': ["/dev/sda", "/dev/sdb"]}
+
+        fake_container_image = None
+        expected_command_list = ['ceph-volume',
+                                 '--cluster',
+                                 'ceph',
+                                 'lvm',
+                                 'batch',
+                                 '--bluestore',
+                                 '--yes',
+                                 '--block-db-size',
+                                 '4096',
+                                 '/dev/sda',
+                                 '/dev/sdb']
+        result = ceph_volume.batch(
+            fake_module, fake_container_image)
+        assert result == expected_command_list