qa/cephfs: backup mount object before running tests

Right now, only client IDs are stashed and restored but with the recent
changes (addition of more attributes to mount objects, specifically),
this is not enough. Saving and restoring these details before and after
tests respectively ensures that mount commands rus smoothly. Not doing
this typically leads to mount command failure for the second test in the
testsuite under execution since the client IDs are saved and restored in
CephFSTestCase.setUp and CephFSTestCase.tearDown respectively but the
rest of the details are not.

Signed-off-by: Rishabh Dave <ridave@redhat.com>

diff --git a/qa/tasks/cephfs/cephfs_test_case.py b/qa/tasks/cephfs/cephfs_test_case.py
index e6718af01ebdcf2c87e4aca78a7ca1c891fe4d90..c68d732b4d7980e61fe283f3689d385f0238ebda 100644 (file)
--- a/qa/tasks/cephfs/cephfs_test_case.py
+++ b/qa/tasks/cephfs/cephfs_test_case.py
@@ -36,6 +36,25 @@ def needs_trimming(f):
     return f
 
 
+class MountDetails():
+
+    def __init__(self, mntobj):
+        self.client_id = mntobj.client_id
+        self.client_keyring_path = mntobj.client_keyring_path
+        self.client_remote = mntobj.client_remote
+        self.cephfs_name = mntobj.cephfs_name
+        self.cephfs_mntpt = mntobj.cephfs_mntpt
+        self.hostfs_mntpt = mntobj.hostfs_mntpt
+
+    def restore(self, mntobj):
+        mntobj.client_id = self.client_id
+        mntobj.client_keyring_path = self.client_keyring_path
+        mntobj.client_remote = self.client_remote
+        mntobj.cephfs_name = self.cephfs_name
+        mntobj.cephfs_mntpt = self.cephfs_mntpt
+        mntobj.hostfs_mntpt = self.hostfs_mntpt
+
+
 class CephFSTestCase(CephTestCase):
     """
     Test case for Ceph FS, requires caller to populate Filesystem and Mounts,
@@ -64,6 +83,15 @@ class CephFSTestCase(CephTestCase):
 
     LOAD_SETTINGS = [] # type: ignore
 
+    def _save_mount_details(self):
+        """
+        XXX: Tests may change details of mount objects, so let's stash them so
+        that these details are restored later to ensure smooth setUps and
+        tearDowns for upcoming tests.
+        """
+        self._orig_mount_details = [MountDetails(m) for m in self.mounts]
+        log.info(self._orig_mount_details)
+
     def setUp(self):
         super(CephFSTestCase, self).setUp()
 
@@ -100,6 +128,7 @@ class CephFSTestCase(CephTestCase):
         for mount in self.mounts:
             if mount.is_mounted():
                 mount.umount_wait(force=True)
+        self._save_mount_details()
 
         # To avoid any issues with e.g. unlink bugs, we destroy and recreate
         # the filesystem rather than just doing a rm -rf of files
@@ -121,11 +150,6 @@ class CephFSTestCase(CephTestCase):
                 self.mds_cluster.mon_manager.raw_cluster_cmd("osd", "blocklist", "rm", addr)
 
         client_mount_ids = [m.client_id for m in self.mounts]
-        # In case the test changes the IDs of clients, stash them so that we can
-        # reset in tearDown
-        self._original_client_ids = client_mount_ids
-        log.info(client_mount_ids)
-
         # In case there were any extra auth identities around from a previous
         # test, delete them
         for entry in self.auth_list():
@@ -183,8 +207,8 @@ class CephFSTestCase(CephTestCase):
         for m in self.mounts:
             m.teardown()
 
-        for i, m in enumerate(self.mounts):
-            m.client_id = self._original_client_ids[i]
+        for m, md in zip(self.mounts, self._orig_mount_details):
+            md.restore(m)
 
         for subsys, key in self.configs_set:
             self.mds_cluster.clear_ceph_conf(subsys, key)