qa: add tests for fixing dangling symlink

Fixes: https://tracker.ceph.com/issues/58090
Signed-off-by: Neeraj Pratap Singh <neesingh@redhat.com>

diff --git a/qa/tasks/cephfs/test_volumes.py b/qa/tasks/cephfs/test_volumes.py
index 037b046304eb97110648cb52c2edd9fb37155938..3d02bd7d1d236dde95751993b2ea35532978399b 100644 (file)
--- a/qa/tasks/cephfs/test_volumes.py
+++ b/qa/tasks/cephfs/test_volumes.py
@@ -14,6 +14,7 @@ from io import StringIO
 from tasks.cephfs.cephfs_test_case import CephFSTestCase
 from tasks.cephfs.fuse_mount import FuseMount
 from teuthology.exceptions import CommandFailedError
+from teuthology import contextutil
 
 log = logging.getLogger(__name__)
 
@@ -8165,6 +8166,51 @@ class TestMisc(TestVolumesHelper):
         # remove group
         self._fs_cmd("subvolumegroup", "rm", self.volname, group)
 
+    def test_dangling_symlink(self):
+        """
+        test_dangling_symlink
+        Tests for the presence of any dangling symlink, if yes,
+        will remove it.
+        """
+        subvolume = self._gen_subvol_name()
+        snapshot = self._gen_subvol_snap_name()
+        clone = self._gen_subvol_clone_name()
+
+        self._fs_cmd("subvolume", "create", self.volname, subvolume)
+
+        self._fs_cmd("subvolume", "snapshot", "create", self.volname, subvolume, snapshot)
+
+        self.config_set('mgr', 'mgr/volumes/snapshot_clone_delay', 60)
+
+        self.config_set('mgr', 'mgr/volumes/snapshot_clone_no_wait', False)
+
+        self._fs_cmd("subvolume", "snapshot", "clone", self.volname, subvolume, snapshot, clone)
+
+        result = json.loads(self._fs_cmd("subvolume", "snapshot", "info", self.volname, subvolume, snapshot))
+
+        # verify snapshot info
+        self.assertEqual(result['has_pending_clones'], "yes")
+
+        clone_path = f'./volumes/_nogroup/{clone}'
+        self.mount_a.run_shell(['sudo', 'rm', '-rf', clone_path], omit_sudo=False)
+
+        with contextutil.safe_while(sleep=5, tries=6) as proceed:
+            while proceed():
+                try:
+                    result = json.loads(self._fs_cmd("subvolume", "snapshot", "info", self.volname, subvolume, snapshot))
+                    # verify snapshot info
+                    self.assertEqual(result['has_pending_clones'], "no")
+                    break
+                except AssertionError as e:
+                    log.debug(f'{e}, retrying')
+
+        self._fs_cmd("subvolume", "snapshot", "rm", self.volname, subvolume, snapshot)
+
+        self._fs_cmd("subvolume", "rm", self.volname, subvolume)
+
+        self._wait_for_trash_empty()
+
+
 class TestPerModuleFinsherThread(TestVolumesHelper):
     """
     Per module finisher thread tests related to mgr/volume cmds.