On Mon, 2010-10-18 at 18:51 +0800, Amos Kong wrote:
> In this test, execute run_guest_test() to setup bonding, ping guest from
> host when repeatedly down/up interfaces, and check the lost packet ratio.
> But this test always fail of lose packets, we maybe need adjust the
> check_ratio in config file.
>
> Signed-off-by: Feng Yang <[email protected]>
> Signed-off-by: Amos Kong <[email protected]>
> ---
> 0 files changed, 0 insertions(+), 0 deletions(-)
>
> diff --git a/client/tests/kvm/scripts/bonding_setup.py
> b/client/tests/kvm/scripts/bonding_setup.py
> new file mode 100644
> index 0000000..bc50ea0
> --- /dev/null
> +++ b/client/tests/kvm/scripts/bonding_setup.py
> @@ -0,0 +1,30 @@
> +import os, re, commands
> +eth_nums = 0
> +ifconfig_output = commands.getoutput("ifconfig")
> +re_eth = "^eth[0-9]*"
> +for ename in re.findall(re_eth, ifconfig_output):
> + eth_config_file = "/etc/sysconfig/network-scripts/ifcfg-%s" % ename
> + eth_config = """DEVICE=%s
> +USERCTL=no
> +ONBOOT=yes
> +MASTER=bond0
> +SLAVE=yes
> +BOOTPROTO=none
> +""" % ename
> + f = file(eth_config_file,'w')
> + f.write(eth_config)
> + f.close()
> +
> +bonding_config_file = "/etc/sysconfig/network-scripts/ifcfg-bond0"
> +bond_config = """DEVICE=bond0
> +BOOTPROTO=dhcp
> +ONBOOT=yes
> +USERCTL=no
> +"""
> +f = file(bonding_config_file, "w")
> +f.write(bond_config)
> +f.close()
> +os.system("modprobe bonding")
> +os.system("service network restart")
I'll make a small addition to the very good comments Jason made below:
> +
> diff --git a/client/tests/kvm/tests/nic_bonding.py
> b/client/tests/kvm/tests/nic_bonding.py
> new file mode 100644
> index 0000000..1c6e674
> --- /dev/null
> +++ b/client/tests/kvm/tests/nic_bonding.py
> @@ -0,0 +1,93 @@
> +import logging, re, os, subprocess, time, commands
> +from autotest_lib.client.common_lib import error
> +from tests import guest_test
> +import kvm_test_utils, kvm_subprocess, kvm_net_utils, kvm_utils
> +
> +def run_nic_bonding(test, params, env):
> + """
> + Nic bonding test in guest.
> +
> + 1) Start guest with four nic models.
> + 2) Setup bond0 in guest by script bonding_setup.py.
> + 3) Run test.sh in guest to down/up all the interfaces
> + 4) Ping bond0 of guest for setting times to check packet loss ratio.
> + 5) Flood ping bond0 of guest for setting seconds.
> + 6) Ping bond0 of guest for another setting times to check packet loss
> ratio.
> + 7) Run set_link monitor command in guest.
> + 8) Ping bond0 of guest for setting times to check packet loss ratio.
> + 9) Flood ping bond0 of guest for setting seconds.
> + 10) Ping bond0 of guest for setting times to check packet loss ratio.
> +
> + @param test: Kvm test object.
> + @param params: Dictionary with the test parameters.
> + @param env: Dictionary with test environment.
> + """
> + timeout = int(params.get("login_timeout", 1200))
> + vm = kvm_test_utils.get_living_vm(env, params.get("main_vm"))
> + session = kvm_test_utils.wait_for_login(vm, 0, timeout, 0, 2,
> serial=True)
Here it's better to call the serial session 'serial_session'. Also, please
remember that I asked you to respin the patch 3 of this patchset, OK?
> + try:
> + cmd_timeout = float(params.get("cmd_timeout", 1000))
> + guest_test.run_guest_test(test, params, env)
> + o = session.get_command_output("ifconfig bond0", timeout=cmd_timeout)
> + if "bond0" not in o:
> + raise error.TestFail("Fail to setup bond0 device!")
> +
> + re_ip = "inet addr:(\d{0,3}\.\d{0,3}\.\d{0,3}\.\d{0,3})"
> + bond_ip = re.findall(re_ip, o)[0]
> + eth_num = len(params.get("nics").split())
> + cmd = 'while true;do '
> + for i in range(eth_num):
> + ethname = kvm_net_utils.get_linux_ifname(session,
> + vm.get_mac_address(i))
> + cmd += 'ifconfig %s down;ifconfig %s up;' % (ethname, ethname)
> + session.get_command_status_output("echo '%s done' > test.sh" % cmd)
> + cmd = 'ps aux|grep "bash test.sh"|grep -v grep'
> +
> + for i in range(10):
> + session.get_command_output("bash test.sh&")
> + time.sleep(5)
> + if session.get_command_status(cmd) == 0:
> + break;
> + logging.info("Fail to run test.sh script in guest, try again!")
> + if session.get_command_status(cmd) != 0:
> + raise error.TestFail("Fail to launch test.sh in guest")
> +
> + check_ratio = params.get("check_ratio", 0)
> + ping_times = float(params.get("ping_times", 1500))
> + flood_ping_time = float(params.get("flood_ping_time", 120))
> +
> + def passed_ping_test():
> + logging.info("Ping the guest for %s times!" % ping_times)
> + (s, o) = kvm_net_utils.ping(dest=bond_ip, count=ping_times,
> + timeout=cmd_timeout)
> + loss_ratio = kvm_net_utils.get_loss_ratio(o)
> + if loss_ratio < 0:
> + logging.error("Fail to get packets loss ratio!")
> + return False
> + elif loss_ratio > check_ratio:
> + logging.error("%s%% packet are lost!" % loss_ratio)
> + return False
> + else:
> + return True
> +
> + if not passed_ping_test():
> + raise error.TestFail("Ping test failed.")
> + logging.info("Flood ping the guest for %s seconds!" %
> flood_ping_time)
> + kvm_net_utils.ping(dest=bond_ip, flood=True, timeout=flood_ping_time)
> + if not passed_ping_test():
> + raise error.TestFail("Ping test failed.")
> +
> + cmd = "set_link %s.0 down" % params.get("nic_model")
> + vm.monitor.cmd(cmd, timeout=cmd_timeout)
> +
> + if not passed_ping_test():
> + raise error.TestFail("Ping test failed.")
> + logging.info("Flood ping the guest for %s seconds!" %
> flood_ping_time)
> + kvm_net_utils.ping(dest=bond_ip, flood=True, timeout=flood_ping_time)
> + if not passed_ping_test():
> + raise error.TestFail("Ping test failed.")
> +
> + finally:
> + session.close()
> + vm.destroy()
> diff --git a/client/tests/kvm/tests_base.cfg.sample
> b/client/tests/kvm/tests_base.cfg.sample
> index 87fd51d..df8216e 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -539,6 +539,19 @@ variants:
> filesize = 512
> nic_mode = tap
>
> + - nic_bonding:
> + type = nic_bonding
> + nics += ' nic2 nic3 nic4'
> + image_snapshot = yes
> + cmd_timeout = 360
> + interpreter = "python"
> + guest_script = "scripts/bonding_setup.py"
> + test_timeout = 1000
> + dst_rsc_path = "/root/bonding_setup.py"
> + rsc_args = ""
> + ping_times = 1500
> + flood_ping_time = 120
> +
> - physical_resources_check: install setup unattended_install.cdrom
> type = physical_resources_check
> catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
>
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