diff --git a/qubes/api/admin.py b/qubes/api/admin.py
index 234c7fb9..2951ab4e 100644
--- a/qubes/api/admin.py
+++ b/qubes/api/admin.py
@@ -347,7 +347,8 @@ class QubesAdminAPI(qubes.api.AbstractQubesAPI):
         assert self.arg in self.dest.volumes.keys()
 
         volume = self.dest.volumes[self.arg]
-        revisions = [revision for revision in volume.revisions]
+        id_to_timestamp = volume.revisions
+        revisions = sorted(id_to_timestamp, key=id_to_timestamp.__getitem__)
         revisions = self.fire_event_for_filter(revisions)
 
         return ''.join('{}\n'.format(revision) for revision in revisions)
diff --git a/qubes/tests/api_admin.py b/qubes/tests/api_admin.py
index 501e4154..dcbe5522 100644
--- a/qubes/tests/api_admin.py
+++ b/qubes/tests/api_admin.py
@@ -381,7 +381,8 @@ class TC_00_VMs(AdminAPITestCase):
         self.vm.volumes = unittest.mock.MagicMock()
         volumes_conf = {
             'keys.return_value': ['root', 'private', 'volatile', 'kernel'],
-            '__getitem__.return_value.revisions': ['rev1', 'rev2'],
+            '__getitem__.return_value.revisions':
+            {'rev2': '2018-02-22T22:22:22', 'rev1': '2018-01-11T11:11:11'},
         }
         self.vm.volumes.configure_mock(**volumes_conf)
         value = self.call_mgmt_func(b'admin.vm.volume.ListSnapshots',
@@ -413,7 +414,8 @@ class TC_00_VMs(AdminAPITestCase):
         self.vm.volumes = unittest.mock.MagicMock()
         volumes_conf = {
             'keys.return_value': ['root', 'private', 'volatile', 'kernel'],
-            '__getitem__.return_value.revisions': ['rev1', 'rev2'],
+            '__getitem__.return_value.revisions':
+            {'rev2': '2018-02-22T22:22:22', 'rev1': '2018-01-11T11:11:11'},
         }
         self.vm.volumes.configure_mock(**volumes_conf)
         with self.assertRaises(AssertionError):
@@ -440,7 +442,8 @@ class TC_00_VMs(AdminAPITestCase):
         self.vm.volumes = unittest.mock.MagicMock()
         volumes_conf = {
             'keys.return_value': ['root', 'private', 'volatile', 'kernel'],
-            '__getitem__.return_value.revisions': ['rev1', 'rev2'],
+            '__getitem__.return_value.revisions':
+            {'rev2': '2018-02-22T22:22:22', 'rev1': '2018-01-11T11:11:11'},
         }
         self.vm.volumes.configure_mock(**volumes_conf)
         del self.vm.volumes['private'].revert('rev1')._is_coroutine
@@ -462,7 +465,8 @@ class TC_00_VMs(AdminAPITestCase):
         self.vm.volumes = unittest.mock.MagicMock()
         volumes_conf = {
             'keys.return_value': ['root', 'private', 'volatile', 'kernel'],
-            '__getitem__.return_value.revisions': ['rev1', 'rev2'],
+            '__getitem__.return_value.revisions':
+            {'rev2': '2018-02-22T22:22:22', 'rev1': '2018-01-11T11:11:11'},
         }
         self.vm.volumes.configure_mock(**volumes_conf)
         self.vm.storage = unittest.mock.Mock()
diff --git a/qubes/tests/vm/dispvm.py b/qubes/tests/vm/dispvm.py
index 43acfbc5..1e562858 100644
--- a/qubes/tests/vm/dispvm.py
+++ b/qubes/tests/vm/dispvm.py
@@ -93,7 +93,7 @@ class TC_00_DispVM(qubes.tests.QubesTestCase):
         self.assertEqual(dispvm.label, self.appvm.label)
         self.assertEqual(dispvm.auto_cleanup, True)
         mock_makedirs.assert_called_once_with(
-            '/var/lib/qubes/appvms/' + dispvm.name, mode=0o775)
+            '/var/lib/qubes/appvms/' + dispvm.name, mode=0o775, exist_ok=True)
         mock_symlink.assert_called_once_with(
             '/usr/share/icons/hicolor/128x128/devices/appvm-red.png',
             '/var/lib/qubes/appvms/{}/icon.png'.format(dispvm.name))
diff --git a/qubes/vm/qubesvm.py b/qubes/vm/qubesvm.py
index 4da2ac01..e30b893b 100644
--- a/qubes/vm/qubesvm.py
+++ b/qubes/vm/qubesvm.py
@@ -1344,7 +1344,7 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
         '''
 
         self.log.info('Creating directory: {0}'.format(self.dir_path))
-        os.makedirs(self.dir_path, mode=0o775)
+        os.makedirs(self.dir_path, mode=0o775, exist_ok=True)
 
         if pool or pools:
             # pylint: disable=attribute-defined-outside-init
@@ -1411,7 +1411,7 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
         assert not os.path.exists(self.dir_path), msg
 
         self.log.info('Creating directory: {0}'.format(self.dir_path))
-        os.makedirs(self.dir_path, mode=0o775)
+        os.makedirs(self.dir_path, mode=0o775, exist_ok=True)
 
         if pool or pools:
             # pylint: disable=attribute-defined-outside-init