Brick connector fix for GlusterFS

Fixes an InvalidParameterValue error by passing the required
information to Brick for mounting.

See also: 1cd3626 Brick connector revised fix for NFS

Bump driver version 1.1.1.

Closes-Bug: 1238085

Change-Id: Ie45889460dd4775a556d592161c98c24a56989c7

cinder/tests/test_glusterfs.py

@@ -1,4 +1,3 @@
-
 # Copyright (c) 2013 Red Hat, Inc.
 # All Rights Reserved.
 #
@@ -24,6 +23,7 @@ from mox import IgnoreArg
 from mox import IsA
 from mox import stubout
 
+from cinder import brick
 from cinder import context
 from cinder import db
 from cinder import exception
@@ -91,6 +91,23 @@ class GlusterFsDriverTestCase(test.TestCase):
         stub = mox_lib.MockObject(attr_to_replace)
         self.stubs.Set(obj, attr_name, stub)
 
+    def test_set_execute(self):
+        mox = self._mox
+        drv = self._driver
+
+        rfsclient = brick.remotefs.remotefs.RemoteFsClient
+
+        mox.StubOutWithMock(rfsclient, 'set_execute')
+
+        def my_execute(*a, **k):
+            pass
+
+        rfsclient.set_execute(my_execute)
+
+        mox.ReplayAll()
+
+        drv.set_execute(my_execute)
+
     def test_local_path(self):
         """local_path common use case."""
         glusterfs.CONF.glusterfs_mount_point_base = self.TEST_MNT_POINT_BASE
@@ -191,14 +208,22 @@ class GlusterFsDriverTestCase(test.TestCase):
                          drv._get_hash_str(self.TEST_EXPORT1))
 
     def test_get_mount_point_for_share(self):
-        """_get_mount_point_for_share should calculate correct value."""
+        """_get_mount_point_for_share should call RemoteFsClient."""
+        mox = self._mox
         drv = self._driver
+        hashed_path = '/mnt/test/abcdefabcdef'
+
+        mox.StubOutWithMock(brick.remotefs.remotefs.RemoteFsClient,
+                            'get_mount_point')
 
         glusterfs.CONF.glusterfs_mount_point_base = self.TEST_MNT_POINT_BASE
 
-        self.assertEqual('/mnt/test/ab03ab34eaca46a5fb81878f7e9b91fc',
-                         drv._get_mount_point_for_share(
-                             self.TEST_EXPORT1))
+        brick.remotefs.remotefs.RemoteFsClient.\
+            get_mount_point(self.TEST_EXPORT1).AndReturn(hashed_path)
+
+        mox.ReplayAll()
+
+        drv._get_mount_point_for_share(self.TEST_EXPORT1)
 
     def test_get_available_capacity_with_df(self):
         """_get_available_capacity should calculate correct value."""
@@ -1646,3 +1671,11 @@ class GlusterFsDriverTestCase(test.TestCase):
         self.assertEqual(conn_info['data']['format'], 'raw')
         self.assertEqual(conn_info['driver_volume_type'], 'glusterfs')
         self.assertEqual(conn_info['data']['name'], volume['name'])
+        self.assertEqual(conn_info['mount_point_base'],
+                         self.TEST_MNT_POINT_BASE)
+
+    def test_get_mount_point_base(self):
+        (mox, drv) = self._mox, self._driver
+
+        self.assertEqual(drv._get_mount_point_base(),
+                         self.TEST_MNT_POINT_BASE)

cinder/volume/drivers/glusterfs.py

@@ -23,11 +23,13 @@ import time
 
 from oslo.config import cfg
 
+from cinder.brick.remotefs import remotefs
 from cinder import compute
 from cinder import db
 from cinder import exception
 from cinder.image import image_utils
 from cinder.openstack.common import log as logging
+from cinder.openstack.common import processutils
 from cinder import units
 from cinder import utils
 from cinder.volume.drivers import nfs
@@ -68,12 +70,25 @@ class GlusterfsDriver(nfs.RemoteFsDriver):
     driver_volume_type = 'glusterfs'
     driver_prefix = 'glusterfs'
     volume_backend_name = 'GlusterFS'
-    VERSION = '1.1.0'
+    VERSION = '1.1.1'
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, execute=processutils.execute, *args, **kwargs):
+        self._remotefsclient = None
         super(GlusterfsDriver, self).__init__(*args, **kwargs)
         self.configuration.append_config_values(volume_opts)
         self._nova = None
+        self.base = getattr(self.configuration,
+                            'glusterfs_mount_point_base',
+                            CONF.glusterfs_mount_point_base)
+        self._remotefsclient = remotefs.RemoteFsClient(
+            'glusterfs',
+            execute,
+            glusterfs_mount_point_base=self.base)
+
+    def set_execute(self, execute):
+        super(GlusterfsDriver, self).set_execute(execute)
+        if self._remotefsclient:
+            self._remotefsclient.set_execute(execute)
 
     def do_setup(self, context):
         """Any initialization the volume driver does while starting."""
@@ -906,7 +921,8 @@ class GlusterfsDriver(nfs.RemoteFsDriver):
 
         return {
             'driver_volume_type': 'glusterfs',
-            'data': data
+            'data': data,
+            'mount_point_base': self._get_mount_point_base()
         }
 
     def terminate_connection(self, volume, connector, **kwargs):
@@ -1095,8 +1111,7 @@ class GlusterfsDriver(nfs.RemoteFsDriver):
         """Return mount point for share.
         :param glusterfs_share: example 172.18.194.100:/var/glusterfs
         """
-        return os.path.join(self.configuration.glusterfs_mount_point_base,
-                            self._get_hash_str(glusterfs_share))
+        return self._remotefsclient.get_mount_point(glusterfs_share)
 
     def _get_available_capacity(self, glusterfs_share):
         """Calculate available space on the GlusterFS share.
@@ -1127,3 +1142,6 @@ class GlusterfsDriver(nfs.RemoteFsDriver):
             command.extend(self.shares[glusterfs_share].split())
 
         self._do_mount(command, ensure, glusterfs_share)
+
+    def _get_mount_point_base(self):
+        return self.base