feat: Enable GFS2 support in blivet

GFS2 is supported by blivet, but the support is disabled by
default so we need to enable it.

Fixes: #417

library/blivet.py

@@ -412,6 +412,7 @@ def __getattr__(self, val):
 if BLIVET_PACKAGE:
     blivet_flags.debug = True
     blivet_flags.allow_online_fs_resize = True
+    blivet_flags.gfs2 = True
     set_up_logging()
     log = logging.getLogger(BLIVET_PACKAGE + ".ansible")
 

tests/test-verify-volume-fs.yml

@@ -18,4 +18,9 @@
       should
       ('{{ storage_test_blkinfo.info[storage_test_volume._device].label }}',
       '{{ storage_test_volume.fs_label }}')
-  when: _storage_test_volume_present | bool
+  when:
+    - _storage_test_volume_present | bool
+    # label for GFS2 is set manually with the extra `-t` fs_create_options
+    # so we can't verify it here because it was not set with fs_label so
+    # the label from blkinfo doesn't match the expected "empty" fs_label
+    - storage_test_volume.fs_type != "gfs2"

tests/tests_lvm_pool_shared.yml

@@ -126,6 +126,8 @@
                   - name: lv1
                     size: "{{ volume1_size }}"
                     mount_point: "{{ mount_location1 }}"
+                    fs_type: gfs2
+                    fs_create_options: -p lock_nolock
 
         - name: Verify role results
           include_tasks: verify-role-results.yml
@@ -144,6 +146,8 @@
                   - name: lv1
                     size: "{{ volume1_size }}"
                     mount_point: "{{ mount_location1 }}"
+                    fs_type: gfs2
+                    fs_create_options: -p lock_nolock
 
         - name: Verify role results
           include_tasks: verify-role-results.yml