def init_host(self):
"""Perform any required initialization."""
if not os.path.isdir(CONF.conversion_dir):
utils.execute('mkdir', '-m', '755', '-p',
CONF.conversion_dir, run_as_root=True)
ctxt = context.get_admin_context()
self.publish_service_capabilities(ctxt)
def create_con_dir(migration_id):
conversion_dir = os.path.join(CONF.conversion_dir,
migration_id)
utils.execute('mkdir', '-m', 755, '-p', conversion_dir,
run_as_root=True)
return conversion_dir
def _get_instance_disk(self, device_url, dest_disk_path):
url = device_url.url
if not os.path.exists(dest_disk_path):
utils.execute('wget',
url,
'--no-check-certificate',
'-O',
dest_disk_path,
run_as_root=True)
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 _get_vm_disk(self, device_url, dest_disk_path):
url = device_url.url
r = requests.get(url, verify=False)
if os.path.exists(dest_disk_path):
utils.execute('rm', dest_disk_path)
f = open(dest_disk_path, "wb")
for chunk in r.iter_content(chunk_size=CHUNK_SIZE):
if chunk:
f.write(chunk)
f.close()
def _get_vm_disk(self, device_url, dest_disk_path):
url = device_url.url
r = requests.get(url, verify=False)
if os.path.exists(dest_disk_path):
utils.execute('rm', dest_disk_path)
f = open(dest_disk_path, "wb")
for chunk in r.iter_content(chunk_size=CHUNK_SIZE):
if chunk:
f.write(chunk)
f.close()
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 _download_image_from_glance(self, image_id, file_path):
out, err = utils.execute(
'glance', '--os-username', self.configuration.username,
'--os-password', self.configuration.password,
'--os-tenant-name', self.configuration.tenant_name,
'--os-auth-url', self.configuration.auth_url,
'image-download', '--file', file_path,
image_id, run_as_root=True)
def _get_instance_disk(self, device_url, dest_disk_path):
url = device_url.url
# TODO: Remove this temp hack
parsed_uri = urlparse(url)
if parsed_uri.netloc == '*':
host = str(self.cloud.params['host'])
url = '{uri.scheme}://{host}{uri.path}'.format(uri=parsed_uri,host=host)
if not os.path.exists(dest_disk_path):
try:
utils.execute('wget', url, '--no-check-certificate',
'-O', dest_disk_path, run_as_root=True)
except Exception as error:
msg = (_('Disk download failed. %s') % error.message)
LOG.exception(msg)
raise exception.VSphereException(msg)
def nova_boot(self, instance_name, image_name):
out, err = utils.execute('nova', '--os-username',
self.configuration.username, '--os-password',
self.configuration.password,
'--os-tenant-name',
self.configuration.tenant_name,
'--os-auth-url', self.configuration.auth_url,
'boot', '--image', image_name, '--flavor',
'2', instance_name, run_as_root=True)
def _upload_image_to_glance(self, image_name, file_path):
out, err = utils.execute('glance', '--os-username',
self.configuration.username,
'--os-password', self.configuration.password,
'--os-tenant-name',
self.configuration.tenant_name,
'--os-auth-url', self.configuration.auth_url,
'image-create', '--file', file_path,
'--disk-format', 'raw', '--container-format',
'bare', '--name', image_name,
run_as_root=True)
def create_volume(self, context, **kwargs):
if not self._initialized:
self.do_setup(context)
image_name = kwargs['mig_ref_id']
try:
self._upload_image_to_glance(image_name, kwargs['path'])
utils.execute('rm', kwargs['path'], run_as_root=True)
img = self.glance.images.find(name=image_name)
if img.status != 'active':
raise Exception
vol = self.cinder.volumes.create(display_name=kwargs['name'],
size=int(kwargs['size']),
imageRef=img.id)
while vol.status != 'available':
vol = self.cinder.volumes.get(vol.id)
self.glance.images.delete(img.id)
except Exception as e:
LOG.error(_LE('Failed to create volume from image at destination '
'image_name: %s %s'), image_name, e)
raise exception.VolumeCreationFailed(reason=e.message)
def _get_free_space(conversion_dir):
"""Calculate and return free space available."""
try:
out = utils.execute('df', '--portability', '--block-size', '1',
conversion_dir,
run_as_root=True)[0]
out = out.splitlines()[1]
available = int(out.split()[3])
except Exception:
msg = _("Failed to get the available free space.")
LOG.exception(msg)
raise exception.GutsException(msg)
return available
def _get_instance_disk(self, device_url, dest_disk_path):
url = device_url.url
if not os.path.exists(dest_disk_path):
utils.execute('wget', url, '--no-check-certificate',
'-O', dest_disk_path, run_as_root=True)
