This test extends the timedifrt test and measures the timedirft across
the vm stopping and continuing. Two helpers function are also added in
kvm_test_utils to do the stop and continue.
Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
client/tests/kvm/tests/timedrift_with_stop.py | 97 +++++++++++++++++++++++++
1 files changed, 97 insertions(+), 0 deletions(-)
create mode 100644 client/tests/kvm/tests/timedrift_with_stop.py
diff --git a/client/tests/kvm/kvm_test_utils.py b/client/tests/kvm/kvm_test_utils.py
index 24e2bf5..7e158a3 100644
--- a/client/tests/kvm/kvm_test_utils.py
+++ b/client/tests/kvm/kvm_test_utils.py
@@ -181,6 +181,30 @@ def migrate(vm, env=None):
raise
+def stop(vm):
+ """
+ Stop a running vm
+ """
+ s, o = vm.send_monitor_cmd("stop")
+ if s != 0:
+ raise error.TestError("Could not send the stop command")
+ s, o = vm.send_monitor_cmd("info status")
+ if "paused" not in o:
+ raise error.TestFail("VM does not stop afer send stop command")
+
+
+def cont(vm):
+ """
+ Continue a stopped vm
+ """
+ s, o = vm.send_monitor_cmd("cont")
+ if s != 0:
+ raise error.TestError("Could not send the cont command")
+ s, o = vm.send_monitor_cmd("info status")
+ if "running" not in o:
+ raise error.TestFail("VM still in paused status after sending cont")
+
+
def get_time(session, time_command, time_filter_re, time_format):
"""
Return the host time and guest time. If the guest time cannot be fetched
diff --git a/client/tests/kvm/tests/timedrift_with_stop.py b/client/tests/kvm/tests/timedrift_with_stop.py
new file mode 100644
index 0000000..b99dd40
--- /dev/null
+++ b/client/tests/kvm/tests/timedrift_with_stop.py
@@ -0,0 +1,97 @@
+import logging, time, commands, re
+from autotest_lib.client.common_lib import error
+import kvm_subprocess, kvm_test_utils, kvm_utils
+
+
+def run_timedrift_with_stop(test, params, env):
+ """
+ Time drift test with stop/continue the guest:
+
+ 1) Log into a guest.
+ 2) Take a time reading from the guest and host.
+ 3) Stop the running of the guest
+ 4) Sleep for a while
+ 5) Continue the guest running
+ 6) Take a second time reading.
+ 7) If the drift (in seconds) is higher than a user specified value, fail.
+
+ @param test: KVM test object.
+ @param params: Dictionary with test parameters.
+ @param env: Dictionary with the test environment.
+ """
+ login_timeout = int(params.get("login_timeout", 360))
+ vm = kvm_test_utils.get_living_vm(env, params.get("main_vm"))
+ session = kvm_test_utils.wait_for_login(vm, timeout=login_timeout)
+
+ # Collect test parameters:
+ # Command to run to get the current time
+ time_command = params.get("time_command")
+ # Filter which should match a string to be passed to time.strptime()
+ time_filter_re = params.get("time_filter_re")
+ # Time format for time.strptime()
+ time_format = params.get("time_format")
+ drift_threshold = float(params.get("drift_threshold", "10"))
+ drift_threshold_single = float(params.get("drift_threshold_single", "3"))
+ stop_iterations = int(params.get("stop_iterations", 1))
+ stop_time = int(params.get("stop_time", 60))
+
+ try:
+ # Get initial time
+ # (ht stands for host time, gt stands for guest time)
+ (ht0, gt0) = kvm_test_utils.get_time(session, time_command,
+ time_filter_re, time_format)
+
+ # Stop the guest
+ for i in range(stop_iterations):
+ # Get time before current iteration
+ (ht0_, gt0_) = kvm_test_utils.get_time(session, time_command,
+ time_filter_re, time_format)
+ # Run current iteration
+ logging.info("Stop %s second: iteration %d of %d..." %
+ (stop_time, i + 1, stop_iterations))
+
+ kvm_test_utils.stop(vm)
+ time.sleep(stop_time)
+ kvm_test_utils.cont(vm)
+
+ # Get time after current iteration
+ (ht1_, gt1_) = kvm_test_utils.get_time(session, time_command,
+ time_filter_re, time_format)
+ # Report iteration results
+ host_delta = ht1_ - ht0_
+ guest_delta = gt1_ - gt0_
+ drift = abs(host_delta - guest_delta)
+ logging.info("Host duration (iteration %d): %.2f" %
+ (i + 1, host_delta))
+ logging.info("Guest duration (iteration %d): %.2f" %
+ (i + 1, guest_delta))
+ logging.info("Drift at iteration %d: %.2f seconds" %
+ (i + 1, drift))
+ # Fail if necessary
+ if drift > drift_threshold_single:
+ raise error.TestFail("Time drift too large at iteration %d: "
+ "%.2f seconds" % (i + 1, drift))
+
+ # Get final time
+ (ht1, gt1) = kvm_test_utils.get_time(session, time_command,
+ time_filter_re, time_format)
+
+ finally:
+ if session:
+ session.close()
+
+ # Report results
+ host_delta = ht1 - ht0
+ guest_delta = gt1 - gt0
+ drift = abs(host_delta - guest_delta)
+ logging.info("Host duration (%d stops): %.2f" %
+ (stop_iterations, host_delta))
+ logging.info("Guest duration (%d stops): %.2f" %
+ (stop_iterations, guest_delta))
+ logging.info("Drift after %d stops: %.2f seconds" %
+ (stop_iterations, drift))
+
+ # Fail if necessary
+ if drift > drift_threshold:
+ raise error.TestFail("Time drift too large after %d stops: "
+ "%.2f seconds" % (stop_iterations, drift))
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index 5349034..c2babb9 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -183,6 +183,13 @@ variants:
reboot_iterations = 1
drift_threshold = 10
drift_threshold_single = 3
+ - with_stop:
+ type = timedrift_with_stop
+ stop_interations = 1
+ drift_threshold = 10
+ drift_threshold_single = 3
+
+
- balloon_check: install setup unattended_install
type = balloon_check
--
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