def preprocess(test, params, env):
"""
Preprocess all VMs and images according to the instructions in params.
Also, collect some host information, such as the KVM version.
:param test: An Autotest test object.
:param params: A dict containing all VM and image parameters.
:param env: The environment (a dict-like object).
"""
error.context("preprocessing")
# First, let's verify if this test does require root or not. If it
# does and the test suite is running as a regular user, we shall just
# throw a TestNAError exception, which will skip the test.
if params.get('requires_root', 'no') == 'yes':
utils_misc.verify_running_as_root()
port = params.get('shell_port')
prompt = params.get('shell_prompt')
address = params.get('ovirt_node_address')
username = params.get('ovirt_node_user')
password = params.get('ovirt_node_password')
setup_pb = False
for nic in params.get('nics', "").split():
nic_params = params.object_params(nic)
if nic_params.get('netdst') == 'private':
setup_pb = True
params_pb = nic_params
params['netdst_%s' % nic] = nic_params.get("priv_brname", 'atbr0')
if setup_pb:
brcfg = test_setup.PrivateBridgeConfig(params_pb)
brcfg.setup()
base_dir = data_dir.get_data_dir()
if params.get("storage_type") == "iscsi":
iscsidev = qemu_storage.Iscsidev(params, base_dir, "iscsi")
params["image_name"] = iscsidev.setup()
params["image_raw_device"] = "yes"
if params.get("storage_type") == "lvm":
lvmdev = qemu_storage.LVMdev(params, base_dir, "lvm")
params["image_name"] = lvmdev.setup()
params["image_raw_device"] = "yes"
env.register_lvmdev("lvm_%s" % params["main_vm"], lvmdev)
if params.get("storage_type") == "nfs":
image_nfs = nfs.Nfs(params)
image_nfs.setup()
image_name_only = os.path.basename(params["image_name"])
params['image_name'] = os.path.join(image_nfs.mount_dir,
image_name_only)
for image_name in params.objects("images"):
name_tag = "image_name_%s" % image_name
if params.get(name_tag):
image_name_only = os.path.basename(params[name_tag])
params[name_tag] = os.path.join(image_nfs.mount_dir,
image_name_only)
# Start tcpdump if it isn't already running
# The fact it has to be started here is so that the test params
# have to be honored.
env.start_tcpdump(params)
# Destroy and remove VMs that are no longer needed in the environment
requested_vms = params.objects("vms")
for key in env.keys():
vm = env[key]
if not isinstance(vm, virt_vm.BaseVM):
continue
if vm.name not in requested_vms:
vm.destroy()
del env[key]
if (params.get("auto_cpu_model") == "yes"
and params.get("vm_type") == "qemu"):
if not env.get("cpu_model"):
env["cpu_model"] = utils_misc.get_qemu_best_cpu_model(params)
params["cpu_model"] = env.get("cpu_model")
kvm_ver_cmd = params.get("kvm_ver_cmd", "")
if kvm_ver_cmd:
try:
cmd_result = utils.run(kvm_ver_cmd)
kvm_version = cmd_result.stdout.strip()
except error.CmdError:
kvm_version = "Unknown"
else:
# Get the KVM kernel module version and write it as a keyval
if os.path.exists("/dev/kvm"):
try:
kvm_version = open("/sys/module/kvm/version").read().strip()
except Exception:
kvm_version = os.uname()[2]
else:
logging.warning("KVM module not loaded")
kvm_version = "Unknown"
logging.debug("KVM version: %s" % kvm_version)
test.write_test_keyval({"kvm_version": kvm_version})
# Get the KVM userspace version and write it as a keyval
kvm_userspace_ver_cmd = params.get("kvm_userspace_ver_cmd", "")
if kvm_userspace_ver_cmd:
try:
cmd_result = utils.run(kvm_userspace_ver_cmd)
kvm_userspace_version = cmd_result.stdout.strip()
except error.CmdError:
kvm_userspace_version = "Unknown"
else:
qemu_path = utils_misc.get_qemu_binary(params)
version_line = commands.getoutput("%s -help | head -n 1" % qemu_path)
matches = re.findall("[Vv]ersion .*?,", version_line)
if matches:
kvm_userspace_version = " ".join(matches[0].split()[1:]).strip(",")
else:
kvm_userspace_version = "Unknown"
logging.debug("KVM userspace version: %s" % kvm_userspace_version)
test.write_test_keyval({"kvm_userspace_version": kvm_userspace_version})
libvirtd_inst = utils_libvirtd.Libvirtd()
if params.get("setup_hugepages") == "yes":
h = test_setup.HugePageConfig(params)
suggest_mem = h.setup()
if suggest_mem is not None:
params['mem'] = suggest_mem
if params.get("vm_type") == "libvirt":
libvirtd_inst.restart()
if params.get("setup_thp") == "yes":
thp = test_setup.TransparentHugePageConfig(test, params)
thp.setup()
if params.get("setup_ksm") == "yes":
ksm = test_setup.KSMConfig(params, env)
ksm.setup(env)
if params.get("vm_type") == "libvirt":
if params.get("setup_libvirt_polkit") == "yes":
pol = test_setup.LibvirtPolkitConfig(params)
try:
pol.setup()
except test_setup.PolkitWriteLibvirtdConfigError, e:
logging.error("e")
except test_setup.PolkitRulesSetupError, e:
logging.error("e")
except Exception, e:
logging.error("Unexpected error:" % e)
except Exception, details:
err += "\nTHP cleanup: %s" % str(details).replace('\\n', '\n ')
logging.error(details)
if params.get("setup_ksm") == "yes":
try:
ksm = test_setup.KSMConfig(params, env)
ksm.cleanup(env)
except Exception, details:
err += "\nKSM cleanup: %s" % str(details).replace('\\n', '\n ')
logging.error(details)
if params.get("vm_type") == "libvirt":
if params.get("setup_libvirt_polkit") == "yes":
try:
pol = test_setup.LibvirtPolkitConfig(params)
pol.cleanup()
libvirtd_inst.restart()
except test_setup.PolkitConfigCleanupError, e:
err += "\nPolkit cleanup: %s" % str(e).replace('\\n', '\n ')
logging.error(e)
except Exception, details:
err += "\nPolkit cleanup: %s" % str(details).replace(
'\\n', '\n ')
logging.error("Unexpected error: %s" % details)
# Execute any post_commands
if params.get("post_command"):
try:
process_command(test, params, env, params.get("post_command"),
int(params.get("post_command_timeout", "600")),