[PATCH v2 12/17] KVM-test: Add a subtest of changing mac address

Amos Kong
2010-08-23T08:50:32Z

Mainly 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`

Signed-off-by: Cao, Chen <kcao@redhat.com>
Signed-off-by: Amos Kong <akong@redhat.com>
---
0 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/client/tests/kvm/tests/mac_change.py b/client/tests/kvm/tests/mac_change.py
new file mode 100644
index 0000000..7422fff
--- /dev/null
+++ b/client/tests/kvm/tests/mac_change.py
@@ -0,0 +1,65 @@
+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_macaddr(0)
+ kvm_utils.free_mac_address(vm.root_dir, vm, 0)
+ new_mac = kvm_utils.generate_mac_address(vm.root_dir,
+ vm.instance,
+ 0, vm.mac_prefix)
+ 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 is changed to 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("Re-start 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 918d5aa..36e3564 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -398,6 +398,10 @@ 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}'
@@ -1096,7 +1100,7 @@ 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%