def test_kvm_hwmodel_to_cpumodel(self):
models = [
cpu_model for cpu_models in KVM_HWMODEL_TO_CPUMODEL.values()
for cpu_model in cpu_models]
for model in self.hardware_models:
self.assertIn(
model, models,
msg='Missing hardware_model in KVM_HWMODEL_TO_CPUMODEL')
def _set_cpu_model(hypervisor, vm, tree):
"""
Selects CPU model based on hardware model.
"""
hw_model = hypervisor.dataset_obj['hardware_model']
for arch, models in KVM_HWMODEL_TO_CPUMODEL.items():
if hw_model in models:
cpu = _find_or_create(tree, 'cpu')
cpu.attrib.update({
'match': 'exact',
'mode': 'custom',
})
model = _find_or_create(cpu, 'model')
model.attrib.update({
'fallback': 'allow',
})
model.text = arch
log.info('KVM: CPU model set to "%s"' % arch)
return
raise HypervisorError(
'No CPU configuration for hardware model "{}"'.format(hw_model))
def check_vm(self, vm, offline):
"""Check whether a VM can run on this hypervisor"""
# Cheap checks should always be executed first to save time
# and fail early. Same goes for checks that are more likely to fail.
# Immediately check whether HV is even supported.
if not offline:
# Compatbile OS?
os_pair = (vm.hypervisor.dataset_obj['os'], self.dataset_obj['os'])
if os_pair not in MIGRATE_CONFIG:
raise HypervisorError(
'{} to {} migration is not supported online.'.format(
*os_pair))
# Compatible CPU model?
hw_pair = (
vm.hypervisor.dataset_obj['hardware_model'],
self.dataset_obj['hardware_model'],
)
cpu_pair = [
arch for arch, models in KVM_HWMODEL_TO_CPUMODEL.items()
for model in hw_pair if model in models
]
if cpu_pair[0] != cpu_pair[1]:
raise HypervisorError(
'{} to {} migration is not supported online.'.format(
*hw_pair))
# HV in supported state?
if self.dataset_obj['state'] not in ['online', 'online_reserved']:
raise InvalidStateError(
'Hypervisor "{}" is not in online state ({}).'.format(
self.fqdn, self.dataset_obj['state']))
# Enough CPUs?
if vm.dataset_obj['num_cpu'] > self.dataset_obj['num_cpu']:
raise HypervisorError(
'Not enough CPUs. Destination Hypervisor has {0}, '
'but VM requires {1}.'.format(self.dataset_obj['num_cpu'],
vm.dataset_obj['num_cpu']))
# Proper VLAN?
if not self.get_vlan_network(vm.dataset_obj['intern_ip']):
raise HypervisorError(
'Hypervisor "{}" does not support route_network "{}".'.format(
self.fqdn, vm.route_network))
# Those checks below all require libvirt connection,
# so execute them last to avoid unnecessary overhead if possible.
# Enough memory?
free_mib = self.free_vm_memory()
if vm.dataset_obj['memory'] > free_mib:
raise HypervisorError(
'Not enough memory. '
'Destination Hypervisor has {:.2f} MiB but VM requires {} MiB '
.format(free_mib, vm.dataset_obj['memory']))
# Enough disk?
free_disk_space = self.get_free_disk_size_gib()
vm_disk_size = float(vm.dataset_obj['disk_size_gib'])
if vm_disk_size > free_disk_space:
raise HypervisorError(
'Not enough free space in VG {} to build VM while keeping'
' {} GiB reserved'.format(
VG_NAME, RESERVED_DISK[self.get_storage_type()]))
# VM already defined? Least likely, if at all.
if self.vm_defined(vm):
raise HypervisorError('VM "{}" is already defined on "{}".'.format(
vm.fqdn, self.fqdn))
def check_vm(self, vm, offline):
"""Check whether a VM can run on this hypervisor"""
if self.dataset_obj['state'] not in ['online', 'online_reserved']:
raise InvalidStateError(
'Hypervisor "{}" is not in online state ({}).'.format(
self.fqdn, self.dataset_obj['state']))
if self.vm_defined(vm):
raise HypervisorError('VM "{}" is already defined on "{}".'.format(
vm.fqdn, self.fqdn))
# Enough CPUs?
if vm.dataset_obj['num_cpu'] > self.dataset_obj['num_cpu']:
raise HypervisorError(
'Not enough CPUs. Destination Hypervisor has {0}, '
'but VM requires {1}.'.format(self.dataset_obj['num_cpu'],
vm.dataset_obj['num_cpu']))
# Enough memory?
free_mib = self.free_vm_memory()
if vm.dataset_obj['memory'] > free_mib:
raise HypervisorError(
'Not enough memory. '
'Destination Hypervisor has {:.2f} MiB but VM requires {} MiB '
.format(free_mib, vm.dataset_obj['memory']))
if not offline:
# Compatbile OS?
os_pair = (vm.hypervisor.dataset_obj['os'], self.dataset_obj['os'])
if os_pair not in MIGRATE_CONFIG:
raise HypervisorError(
'{} to {} migration is not supported online.'.format(
*os_pair))
# Compatible CPU model?
hw_pair = (
vm.hypervisor.dataset_obj['hardware_model'],
self.dataset_obj['hardware_model'],
)
cpu_pair = [
arch for arch, models in KVM_HWMODEL_TO_CPUMODEL.items()
for model in hw_pair if model in models
]
if cpu_pair[0] != cpu_pair[1]:
raise HypervisorError(
'{} to {} migration is not supported online.'.format(
*hw_pair))
# Enough disk?
free_disk_space = self.get_free_disk_size_gib()
vm_disk_size = float(vm.dataset_obj['disk_size_gib'])
if vm_disk_size > free_disk_space:
raise HypervisorError(
'Not enough free space in VG {} to build VM while keeping'
' {} GiB reserved'.format(
VG_NAME, RESERVED_DISK[self.get_storage_type()]))
# Proper VLAN?
if not self.get_vlan_network(vm.dataset_obj['intern_ip']):
raise HypervisorError(
'Hypervisor "{}" does not support route_network "{}".'.format(
self.fqdn, vm.dataset_obj['route_network']))