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-rw-r--r--qa/tasks/cephfs/test_cap_flush.py64
1 files changed, 64 insertions, 0 deletions
diff --git a/qa/tasks/cephfs/test_cap_flush.py b/qa/tasks/cephfs/test_cap_flush.py
new file mode 100644
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+++ b/qa/tasks/cephfs/test_cap_flush.py
@@ -0,0 +1,64 @@
+
+import os
+import time
+from textwrap import dedent
+from unittest import SkipTest
+from tasks.cephfs.fuse_mount import FuseMount
+from tasks.cephfs.cephfs_test_case import CephFSTestCase, for_teuthology
+
+class TestCapFlush(CephFSTestCase):
+ @for_teuthology
+ def test_replay_create(self):
+ """
+ MDS starts to handle client caps when it enters clientreplay stage.
+ When handling a client cap in clientreplay stage, it's possible that
+ corresponding inode does not exist because the client request which
+ creates inode hasn't been replayed.
+ """
+
+ if not isinstance(self.mount_a, FuseMount):
+ raise SkipTest("Require FUSE client to inject client release failure")
+
+ dir_path = os.path.join(self.mount_a.mountpoint, "testdir")
+ py_script = dedent("""
+ import os
+ os.mkdir("{0}")
+ fd = os.open("{0}", os.O_RDONLY)
+ os.fchmod(fd, 0o777)
+ os.fsync(fd)
+ """).format(dir_path)
+ self.mount_a.run_python(py_script)
+
+ self.fs.mds_asok(["flush", "journal"])
+
+ # client will only get unsafe replay
+ self.fs.mds_asok(["config", "set", "mds_log_pause", "1"])
+
+ file_name = "testfile"
+ file_path = dir_path + "/" + file_name
+
+ # Create a file and modify its mode. ceph-fuse will mark Ax cap dirty
+ py_script = dedent("""
+ import os
+ os.chdir("{0}")
+ os.setgid(65534)
+ os.setuid(65534)
+ fd = os.open("{1}", os.O_CREAT | os.O_RDWR, 0o644)
+ os.fchmod(fd, 0o640)
+ """).format(dir_path, file_name)
+ self.mount_a.run_python(py_script)
+
+ # Modify file mode by different user. ceph-fuse will send a setattr request
+ self.mount_a.run_shell(["chmod", "600", file_path], wait=False)
+
+ time.sleep(10)
+
+ # Restart mds. Client will re-send the unsafe request and cap flush
+ self.fs.mds_stop()
+ self.fs.mds_fail_restart()
+ self.fs.wait_for_daemons()
+
+ mode = self.mount_a.run_shell(['stat', '-c' '%a', file_path]).stdout.getvalue().strip()
+ # If the cap flush get dropped, mode should be 0644.
+ # (Ax cap stays in dirty state, which prevents setattr reply from updating file mode)
+ self.assertEqual(mode, "600")