On Mon, Sep 27, 2010 at 06:43:55PM -0400, Lucas Meneghel Rodrigues wrote:
> Repeatedly load/unload nic driver, try to transfer file between guest and host
> by threads at the same time, and check the md5sum.
>
> Changes from v1:
> - Use a new method to get nic driver name
> - Use utils.hash_file() to get md5sum
>
> Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
> Signed-off-by: Lucas Meneghel Rodrigues <lmr@xxxxxxxxxx>
> ---
> client/tests/kvm/tests/nicdriver_unload.py | 115 ++++++++++++++++++++++++++++
> client/tests/kvm/tests_base.cfg.sample | 10 ++-
> 2 files changed, 124 insertions(+), 1 deletions(-)
> create mode 100644 client/tests/kvm/tests/nicdriver_unload.py
>
> diff --git a/client/tests/kvm/tests/nicdriver_unload.py b/client/tests/kvm/tests/nicdriver_unload.py
> new file mode 100644
> index 0000000..0a39815
> --- /dev/null
> +++ b/client/tests/kvm/tests/nicdriver_unload.py
> @@ -0,0 +1,115 @@
> +import logging, threading, os
> +from autotest_lib.client.common_lib import error
> +from autotest_lib.client.bin import utils
> +import kvm_utils, kvm_test_utils
> +
> +def run_nicdriver_unload(test, params, env):
> + """
> + Test nic driver.
> +
> + 1) Boot a VM.
> + 2) Get the NIC driver name.
> + 3) Repeatedly unload/load NIC driver.
> + 4) Multi-session TCP transfer on test interface.
> + 5) Check whether the test interface should still work.
> +
> + @param test: KVM test object.
> + @param params: Dictionary with the test parameters.
> + @param env: Dictionary with test environment.
> + """
> + 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=timeout)
> + logging.info("Trying to log into guest '%s' by serial", vm.name)
> + session2 = kvm_utils.wait_for(lambda: vm.serial_login(),
> + timeout, 0, step=2)
> + if not session2:
> + raise error.TestFail("Could not log into guest '%s'" % vm.name)
> +
> + ethname = kvm_test_utils.get_linux_ifname(session, vm.get_mac_address(0))
> + sys_path = "/sys/class/net/%s/device/driver" % (ethname)
> + s, o = session.get_command_status_output('readlink -e %s' % sys_path)
> + if s:
> + raise error.TestError("Could not find driver name")
> + driver = os.path.basename(o.strip())
> + logging.info("driver is %s", driver)
> +
> + class ThreadScp(threading.Thread):
> + def run(self):
> + remote_file = '/tmp/' + self.getName()
> + file_list.append(remote_file)
> + ret = vm.copy_files_to(file_name, remote_file, timeout=scp_timeout)
> + if ret:
> + logging.debug("File %s was transfered successfuly", remote_file)
> + else:
> + logging.debug("Failed to transfer file %s", remote_file)
> +
> + def compare(origin_file, receive_file):
> + cmd = "md5sum %s"
> + check_sum1 = utils.hash_file(origin_file, method="md5")
> + s, output2 = session.get_command_status_output(cmd % receive_file)
> + if s != 0:
> + logging.error("Could not get md5sum of receive_file")
> + return False
> + check_sum2 = output2.strip().split()[0]
> + logging.debug("original file md5: %s, received file md5: %s",
> + check_sum1, check_sum2)
> + if check_sum1 != check_sum2:
> + logging.error("MD5 hash of origin and received files doesn't match")
> + return False
> + return True
> +
> + #produce sized file in host
> + file_size = params.get("file_size")
> + file_name = "/tmp/nicdriver_unload_file"
> + cmd = "dd if=/dev/urandom of=%s bs=%sM count=1"
> + utils.system(cmd % (file_name, file_size))
> +
> + file_list = []
> + connect_time = params.get("connect_time")
> + scp_timeout = int(params.get("scp_timeout"))
> + thread_num = int(params.get("thread_num"))
> + unload_load_cmd = ("sleep %s && ifconfig %s down && modprobe -r %s && "
> + "sleep 1 && modprobe %s && ifconfig %s up" %
Need sleep some seconds (eg. 4s) between 'modprobe ..' and 'ifconfig .. up'.
Because, the creation of interface maybe not complete when command('modprobe ..') returns.
unload_load_cmd = ("sleep %s && ifconfig %s down && modprobe -r %s && "
"sleep 1 && modprobe %s && sleep 4 && ifconfig %s up" %
btw, lucas
I added comments to nicdriver_unload, vlan, multicast, ethtool.
I also tested other patchsets, they are all fine.
> + (connect_time, ethname, driver, driver, ethname))
> + pid = os.fork()
> + if pid != 0:
> + logging.info("Unload/load NIC driver repeatedly in guest...")
> + while True:
> + logging.debug("Try to unload/load nic drive once")
> + if session2.get_command_status(unload_load_cmd, timeout=120) != 0:
> + session.get_command_output("rm -rf /tmp/Thread-*")
> + raise error.TestFail("Unload/load nic driver failed")
> + pid, s = os.waitpid(pid, os.WNOHANG)
> + status = os.WEXITSTATUS(s)
> + if (pid, status) != (0, 0):
> + logging.debug("Child process ending")
> + break
> + else:
> + logging.info("Multi-session TCP data transfer")
> + threads = []
> + for i in range(thread_num):
> + t = ThreadScp()
> + t.start()
> + threads.append(t)
> + for t in threads:
> + t.join(timeout = scp_timeout)
> + os._exit(0)
> +
> + session2.close()
> +
> + try:
> + logging.info("Check MD5 hash for received files in multi-session")
> + for f in file_list:
> + if not compare(file_name, f):
> + raise error.TestFail("Fail to compare (guest) file %s" % f)
> +
> + logging.info("Test nic function after load/unload")
> + if not vm.copy_files_to(file_name, file_name):
> + raise error.TestFail("Fail to copy file from host to guest")
> + if not compare(file_name, file_name):
> + raise error.TestFail("Test nic function after load/unload fail")
> +
> + finally:
> + session.get_command_output("rm -rf /tmp/Thread-*")
> + session.close()
> diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
> index bc014c8..d06bff7 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -481,6 +481,14 @@ variants:
> filesize = 4000
> scp_timeout = 1000
>
> + - nicdriver_unload: install setup unattended_install.cdrom
> + type = nicdriver_unload
> + nic_mode = tap
> + file_size = 100
> + connect_time = 4
> + scp_timeout = 300
> + thread_num = 10
> +
> - physical_resources_check: install setup unattended_install.cdrom
> type = physical_resources_check
> catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
> @@ -1255,7 +1263,7 @@ variants:
>
> # Windows section
> - @Windows:
> - no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer
> + no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload
> shutdown_command = shutdown /s /f /t 0
> reboot_command = shutdown /r /f /t 0
> status_test_command = echo %errorlevel%
> --
> 1.7.1
>
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