[PATCH 13/18] KVM test: Add a subtest of changing MAC address

Lucas Meneghel Rodrigues
2010-09-27T22:43:59Z

Test steps:

1. Get a new mac from pool, and the old mac addr of guest.
2. Execute the mac_change.sh in guest.
3. Relogin to guest and query the interfaces info by `ifconfig`

Changes from v3:
- Make sure the old and newly generated MAC addresses are different
before proceeding with the test.

Signed-off-by: Cao, Chen <kcao@redhat.com>
Signed-off-by: Amos Kong <akong@redhat.com>
---
client/tests/kvm/tests/mac_change.py | 68 ++++++++++++++++++++++++++++++++
client/tests/kvm/tests_base.cfg.sample | 6 ++-
2 files changed, 73 insertions(+), 1 deletions(-)
create mode 100644 client/tests/kvm/tests/mac_change.py

diff --git a/client/tests/kvm/tests/mac_change.py b/client/tests/kvm/tests/mac_change.py
new file mode 100644
index 0000000..010c395
--- /dev/null
+++ b/client/tests/kvm/tests/mac_change.py
@@ -0,0 +1,68 @@
+import logging
+from autotest_lib.client.common_lib import error
+import kvm_utils, kvm_test_utils
+
+
+def run_mac_change(test, params, env):
+ """
+ Change MAC address of guest.
+
+ 1) Get a new mac from pool, and the old mac addr of guest.
+ 2) Set new mac in guest and regain new IP.
+ 3) Re-log into guest with new MAC.
+
+ @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"))
+ logging.info("Trying to log into guest '%s' by serial", vm.name)
+ session = kvm_utils.wait_for(lambda: vm.serial_login(),
+ timeout, 0, step=2)
+ if not session:
+ raise error.TestFail("Could not log into guest '%s'" % vm.name)
+
+ old_mac = vm.get_mac_address(0)
+ new_different = False
+ while not new_different:
+ kvm_utils.free_mac_address(vm.root_dir, vm.instance, 0)
+ new_mac = kvm_utils.generate_mac_address(vm.root_dir,
+ vm.instance,
+ 0, vm.mac_prefix)
+ if old_mac != new_mac:
+ new_different = True
+ logging.info("The initial MAC address is %s", old_mac)
+ interface = kvm_test_utils.get_linux_ifname(session, old_mac)
+ # Start change MAC address
+ logging.info("Changing MAC address to %s", new_mac)
+ change_cmd = ("ifconfig %s down && ifconfig %s hw ether %s && "
+ "ifconfig %s up" % (interface, interface, new_mac, interface))
+ if session.get_command_status(change_cmd) != 0:
+ raise error.TestFail("Fail to send mac_change command")
+
+ # Verify whether MAC address was changed to the new one
+ logging.info("Verifying the new mac address")
+ if session.get_command_status("ifconfig | grep -i %s" % new_mac) != 0:
+ raise error.TestFail("Fail to change MAC address")
+
+ # Restart `dhclient' to regain IP for new mac address
+ logging.info("Restart the network to gain new IP")
+ dhclient_cmd = "dhclient -r && dhclient %s" % interface
+ session.sendline(dhclient_cmd)
+
+ # Re-log into the guest after changing mac address
+ if kvm_utils.wait_for(session.is_responsive, 120, 20, 3):
+ # Just warning when failed to see the session become dead,
+ # because there is a little chance the ip does not change.
+ logging.warn("The session is still responsive, settings may fail.")
+ session.close()
+
+ # Re-log into guest and check if session is responsive
+ logging.info("Re-log into the guest")
+ session = kvm_test_utils.wait_for_login(vm,
+ timeout=int(params.get("login_timeout", 360)))
+ if not session.is_responsive():
+ raise error.TestFail("The new session is not responsive.")
+
+ session.close()
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index b8b7662..c55396d 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -513,6 +513,10 @@ variants:
restart_vm = yes
pxe_timeout = 60

+ - mac_change: install setup unattended_install.cdrom
+ type = mac_change
+ kill_vm = yes
+
- physical_resources_check: install setup unattended_install.cdrom
type = physical_resources_check
catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
@@ -1287,7 +1291,7 @@ variants:

# Windows section
- @Windows:
- no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload nic_promisc multicast
+ no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload nic_promisc multicast mac_change
shutdown_command = shutdown /s /f /t 0
reboot_command = shutdown /r /f /t 0
status_test_command = echo %errorlevel%
--
1.7.1