org.osbuild.mkfs.btrfs: add support for -m argument

Osbuild doesn't support creating btrfs over multiple devices, thus it should
be fine to have only single and dup in the schema (other options are for raid)

stages/org.osbuild.mkfs.btrfs

@@ -37,6 +37,11 @@ SCHEMA_2 = r"""
       "description": "Label for the file system",
       "type": "string",
       "maxLength": 256
+    },
+    "metadata": {
+      "description": "Profile for the metadata block groups",
+      "type": "string",
+      "enum": ["single", "dup"]
     }
   }
 }
@@ -48,11 +53,15 @@ def main(devices, options):
 
     uuid = options["uuid"]
     label = options.get("label")
+    metadata = options.get("metadata")
     opts = []
 
     if label:
         opts = ["-L", label]
 
+    if metadata:
+        opts += ["-m", metadata]
+
     subprocess.run(["mkfs.btrfs", "-U", uuid] + opts + [device],
                    encoding='utf8', check=True)
 

test/data/manifests/fedora-boot-btrfs.json

@@ -1105,7 +1105,8 @@
           "type": "org.osbuild.mkfs.btrfs",
           "options": {
             "uuid": "6e4ff95f-f662-45ee-a82a-bdf44a2d0b75",
-            "label": "root"
+            "label": "root",
+            "metadata": "dup"
           },
           "devices": {
             "device": {

test/data/manifests/fedora-boot-btrfs.mpp.yaml

@@ -166,6 +166,7 @@ pipelines:
         options:
           uuid: 6e4ff95f-f662-45ee-a82a-bdf44a2d0b75
           label: root
+          metadata: dup
         devices:
           device:
             type: org.osbuild.loopback