qa: wait for kernel client death

After sending the reboot command, we need to wait briefly for it to be
rebooted so that the kernel client doesn't voluntarily give up its Fb
cap.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 6b83f43ba0a99ad86850974d354b17c3e23877be)

diff --git a/qa/tasks/cephfs/test_client_recovery.py b/qa/tasks/cephfs/test_client_recovery.py
index c70e224714eda00ca568e3f5a37975640f7a51db..6ba8016d1136047218987b79e59ab4867daca222 100644 (file)
--- a/qa/tasks/cephfs/test_client_recovery.py
+++ b/qa/tasks/cephfs/test_client_recovery.py
@@ -277,6 +277,9 @@ class TestClientRecovery(CephFSTestCase):
         # Simulate client death
         self.mount_a.kill()
 
+        # wait for it to die so it doesn't voluntarily release buffer cap
+        time.sleep(5)
+
         try:
             # The waiter should get stuck waiting for the capability
             # held on the MDS by the now-dead client A