add .path to Raid so for_client(raid-with-partitions) works

subiquity/common/filesystem/tests/test_labels.py

@@ -18,12 +18,14 @@
 
 from subiquity.common.filesystem.labels import (
     annotations,
+    for_client,
     usage_labels,
     )
 from subiquity.models.tests.test_filesystem import (
     make_model,
     make_model_and_disk,
     make_model_and_partition,
+    make_model_and_raid,
     make_partition,
     )
 
@@ -123,3 +125,11 @@ def test_partition_usage_labels(self):
         self.assertEqual(
             usage_labels(partition),
             ["to be reformatted as ext4", "mounted at /"])
+
+
+class TestForClient(unittest.TestCase):
+
+    def test_for_client_raid_parts(self):
+        model, raid = make_model_and_raid()
+        make_partition(model, raid)
+        for_client(raid)

subiquity/models/filesystem.py

@@ -772,6 +772,12 @@ def serialize_devices(self):
     container = attributes.ref(backlink="_subvolumes", default=None)  # Raid
     _subvolumes = attributes.backlink(default=attr.Factory(list))
 
+    @property
+    def path(self):
+        # This is just here to make for_client(raid-with-partitions) work. It
+        # might not be very accurate.
+        return '/dev/md/' + self.name
+
     @property
     def size(self):
         if self.preserve and self._m._probe_data: