def get_source(context, id):
"""Retrieves single source by ID."""
if id is None:
msg = _("ID cannot be None")
raise exception.InvalidSource(reason=msg)
return db.source_get(context, id)
def get_source(context, id):
"""Retrieves single source by ID."""
if id is None:
msg = _("ID cannot be None")
raise exception.InvalidSource(reason=msg)
return db.source_get(context, id)
def create_migration(self, context, migration_ref):
"""Creates the migration process of a VM."""
try:
vm_id = migration_ref.get('source_instance_id')
vm = db.vm_get(context, vm_id)
source = db.source_get(context, vm.get('source_id'))
migration_id = migration_ref.get('id')
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['connect'],
MIGRATION_STATUS['init'])
driver = self._get_driver_from_source(context, source)
source_vm_id = vm.get('uuid_at_source')
vm_conversion_dir = os.path.join(CONF.conversion_dir, vm_id)
utils.execute('mkdir', '-p', vm_conversion_dir, run_as_root=False)
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['fetch'],
MIGRATION_STATUS['inprogress'])
disks = driver.download_vm_disks(context, source_vm_id,
vm_conversion_dir)
self._convert_disks(context, migration_id, disks)
image_name_prefix = vm.get('name')
if not image_name_prefix:
image_name_prefix = vm_id
self._upload_to_glance(context, migration_id, image_name_prefix,
disks)
name = vm.get('id')
memory = int(vm.get('memory'))
cpus = int(vm.get('vcpus'))
root_gb = int(disks[0].get('size')) / 1024 / 1024 / 1024
flavor = self._flavor_create(context, name, memory, cpus, root_gb)
dest_id = self._boot_vm(context, migration_id, disks,
image_name_prefix, flavor)
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['done'],
MIGRATION_STATUS['complete'])
db.vm_update(context, vm_id, {
'migrated': True,
'dest_id': dest_id
})
except Exception:
self._migration_status_update(context, migration_id, None,
MIGRATION_STATUS['error'])
raise
def create_migration(self, context, migration_ref):
"""Creates the migration process of a VM."""
try:
vm_id = migration_ref.get('source_instance_id')
vm = db.vm_get(context, vm_id)
source = db.source_get(context, vm.get('source_id'))
migration_id = migration_ref.get('id')
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['connect'],
MIGRATION_STATUS['init'])
driver = self._get_driver_from_source(context, source)
source_vm_id = vm.get('uuid_at_source')
vm_conversion_dir = os.path.join(CONF.conversion_dir, vm_id)
utils.execute('mkdir', '-p', vm_conversion_dir,
run_as_root = False)
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['fetch'],
MIGRATION_STATUS['inprogress'])
disks = driver.download_vm_disks(context, source_vm_id,
vm_conversion_dir)
self._convert_disks(context, migration_id, disks)
image_name_prefix = vm.get('name')
if not image_name_prefix:
image_name_prefix = vm_id
self._upload_to_glance(context, migration_id,
image_name_prefix, disks)
dest_id = self._boot_vm(context, migration_id,
disks, image_name_prefix)
self._migration_status_update(context, migration_id,
MIGRATION_EVENT['done'],
MIGRATION_STATUS['complete'])
db.vm_update(context, vm_id, {'migrated': True,
'dest_id': dest_id})
except Exception:
self._migration_status_update(context, migration_id,
None, MIGRATION_STATUS['error'])
raise
def fetch_vms(self, context, source_hypervisor_id):
"""Fetch VM list from source hypervisor"""
if not source_hypervisor_id:
raise
source = db.source_get(context, source_hypervisor_id)
driver = self._get_driver_from_source(context, source)
vms = driver.get_vms_list()
db.delete_vms_by_source_id(context, source_hypervisor_id)
for vm in vms:
vm['source_id'] = source_hypervisor_id
db.vm_create(context, vm)
def validate_for_migration(self, context, migration_ref):
"""Validates if all conditions before actual migration
Raises:
InvalidPowerState: Virtual Instance not in correct power state.
"""
instance_id = migration_ref.get('source_instance_id')
vm = db.vm_get(context, instance_id)
source = db.source_get(context, vm.get('source_id'))
driver = self._get_driver_from_source(context, source)
continue_migration, error_cls = driver.validate_for_migration(
vm.get('uuid_at_source'))
if (not continue_migration and issubclass(
error_cls, exception.MigrationValidationFailed)):
raise error_cls(instance_id=instance_id)
def fetch_vms(self, context, source_hypervisor_id):
"""Fetch VM list from source hypervisor"""
if not source_hypervisor_id:
raise Exception
source = db.source_get(context, source_hypervisor_id)
driver = self._get_driver_from_source(context, source)
vms = driver.get_vms_list()
db.delete_vms_by_source_id(context, source_hypervisor_id)
for vm in vms:
vm['source_id'] = source_hypervisor_id
db.vm_create(context, vm)
def validate_for_migration(self, context, migration_ref):
"""Validates if all conditions before actual migration
Raises:
InvalidPowerState: Virtual Instance not in correct power state.
"""
instance_id = migration_ref.get('source_instance_id')
vm = db.vm_get(context, instance_id)
source = db.source_get(context, vm.get('source_id'))
driver = self._get_driver_from_source(context, source)
continue_migration, error_cls = driver.validate_for_migration(
vm.get('uuid_at_source')
)
if (not continue_migration and
issubclass(error_cls, exception.MigrationValidationFailed)):
raise error_cls(instance_id=instance_id)
