Thanks, this patch works well.
Acked-by: Lukas Doktor <ldoktor@xxxxxxxxxx>
Dne 26.8.2011 10:31, Jiří Župka napsal(a):
This patch contain two tests.
1) Try kill guest when guest netwok is under loading.
2) Try kill guest after multiple adding and removing network drivers.
Signed-off-by: Jiří Župka<jzupka@xxxxxxxxxx>
---
client/tests/kvm/tests_base.cfg.sample | 18 ++++
client/virt/tests/netstress_kill_guest.py | 147 +++++++++++++++++++++++++++++
2 files changed, 165 insertions(+), 0 deletions(-)
create mode 100644 client/virt/tests/netstress_kill_guest.py
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index ec1b48d..a7ff29f 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -845,6 +845,24 @@ variants:
restart_vm = yes
kill_vm_on_error = yes
+ - netstress_kill_guest: install setup unattended_install.cdrom
+ only Linux
+ type = netstress_kill_guest
+ image_snapshot = yes
+ nic_mode = tap
+ # There should be enough vms for build topology.
+ variants:
+ -driver:
+ mode = driver
+ -load:
+ mode = load
+ netperf_files = netperf-2.4.5.tar.bz2 wait_before_data.patch
+ packet_size = 1500
+ setup_cmd = "cd %s&& tar xvfj netperf-2.4.5.tar.bz2&& cd netperf-2.4.5&& patch -p0< ../wait_before_data.patch&& ./configure&& make"
+ clean_cmd = " while killall -9 netserver; do True test; done;"
+ netserver_cmd = %s/netperf-2.4.5/src/netserver
+ netperf_cmd = %s/netperf-2.4.5/src/netperf -t %s -H %s -l 60 -- -m %s
+
- set_link: install setup image_copy unattended_install.cdrom
type = set_link
test_timeout = 1000
diff --git a/client/virt/tests/netstress_kill_guest.py b/client/virt/tests/netstress_kill_guest.py
new file mode 100644
index 0000000..7452e09
--- /dev/null
+++ b/client/virt/tests/netstress_kill_guest.py
@@ -0,0 +1,147 @@
+import logging, os, signal, re, time
+from autotest_lib.client.common_lib import error
+from autotest_lib.client.bin import utils
+from autotest_lib.client.virt import aexpect, virt_utils
+
+
+def run_netstress_kill_guest(test, params, env):
+ """
+ Try stop network interface in VM when other VM try to communicate.
+
+ @param test: kvm test object
+ @param params: Dictionary with the test parameters
+ @param env: Dictionary with test environment.
+ """
+ def get_corespond_ip(ip):
+ """
+ Get local ip address which is used for contact ip.
+
+ @param ip: Remote ip
+ @return: Local corespond IP.
+ """
+ result = utils.run("ip route get %s" % (ip)).stdout
+ ip = re.search("src (.+)", result)
+ if ip is not None:
+ ip = ip.groups()[0]
+ return ip
+
+
+ def get_ethernet_driver(session):
+ """
+ Get driver of network cards.
+
+ @param session: session to machine
+ """
+ modules = []
+ out = session.cmd("ls -l /sys/class/net/*/device/driver/module")
+ for module in out.split("\n"):
+ modules.append(module.split("/")[-1])
+ modules.remove("")
+ return set(modules)
+
+
+ def kill_and_check(vm):
+ vm_pid = vm.get_pid()
+ vm.destroy(gracefully=False)
+ time.sleep(2)
+ try:
+ os.kill(vm_pid, 0)
+ logging.error("VM is not dead.")
+ raise error.TestFail("Problem with killing guest.")
+ except OSError:
+ logging.info("VM is dead.")
+
+
+ def netload_kill_problem(session_serial):
+ netperf_dir = os.path.join(os.environ['AUTODIR'], "tests/netperf2")
+ setup_cmd = params.get("setup_cmd")
+ clean_cmd = params.get("clean_cmd")
+ firewall_flush = "iptables -F"
+
+ try:
+ utils.run(firewall_flush)
+ except:
+ logging.warning("Could not flush firewall rules on guest")
+
+ try:
+ session_serial.cmd(firewall_flush)
+ except aexpect.ShellError:
+ logging.warning("Could not flush firewall rules on guest")
+
+ for i in params.get("netperf_files").split():
+ vm.copy_files_to(os.path.join(netperf_dir, i), "/tmp")
+
+ guest_ip = vm.get_address(0)
+ server_ip = get_corespond_ip(guest_ip)
+
+ logging.info("Setup and run netperf on host and guest")
+ session_serial.cmd(setup_cmd % "/tmp", timeout=200)
+ utils.run(setup_cmd % netperf_dir)
+
+ try:
+ session_serial.cmd(clean_cmd)
+ except:
+ pass
+ session_serial.cmd(params.get("netserver_cmd") % "/tmp")
+
+ utils.run(clean_cmd, ignore_status=True)
+ utils.run(params.get("netserver_cmd") % netperf_dir)
+
+ server_netperf_cmd = params.get("netperf_cmd") % (netperf_dir, "TCP_STREAM",
+ guest_ip, params.get("packet_size", "1500"))
+ quest_netperf_cmd = params.get("netperf_cmd") % ("/tmp", "TCP_STREAM",
+ server_ip, params.get("packet_size", "1500"))
+
+ tcpdump = env.get("tcpdump")
+ pid = None
+ if tcpdump:
+ # Stop the background tcpdump process
+ try:
+ pid = int(utils.system_output("pidof tcpdump"))
+ logging.debug("Stopping the background tcpdump")
+ os.kill(pid, signal.SIGSTOP)
+ except:
+ pass
+
+ try:
+ logging.info("Start heavy network load host<=> guest.")
+ session_serial.sendline(quest_netperf_cmd)
+ utils.BgJob(server_netperf_cmd)
+
+ #Wait for create big network usage.
+ time.sleep(10)
+ kill_and_check(vm)
+
+ finally:
+ utils.run(clean_cmd, ignore_status=True)
+ if tcpdump and pid:
+ logging.debug("Resuming the background tcpdump")
+ logging.info("pid is %s" % pid)
+ os.kill(pid, signal.SIGCONT)
+
+
+ def netdriver_kill_problem(session_serial):
+ modules = get_ethernet_driver(session_serial)
+ logging.debug(modules)
+ for _ in range(50):
+ for module in modules:
+ session_serial.cmd("rmmod %s" % (module))
+ time.sleep(0.2)
+ for module in modules:
+ session_serial.cmd("modprobe %s" % (module))
+ time.sleep(0.2)
+ kill_and_check(vm)
+
+
+ vm = env.get_vm(params["main_vm"])
+ vm.verify_alive()
+ login_timeout = int(params.get("login_timeout", 360))
+ session = vm.wait_for_login(timeout=login_timeout)
+ session.close()
+ session_serial = vm.wait_for_serial_login(timeout=login_timeout)
+
+ mode = params.get("mode")
+ if mode == "driver":
+ netdriver_kill_problem(session_serial)
+ elif mode == "load":
+ netload_kill_problem(session_serial)
--
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