def _check_vdi_size(cls, context, session, instance, vdi_uuid):
size_bytes = cls._get_vdi_chain_size(context, session, vdi_uuid)
# FIXME(jk0): this was copied directly from compute.manager.py, let's
# refactor this to a common area
instance_type_id = instance['instance_type_id']
instance_type = db.instance_type_get(context, instance_type_id)
allowed_size_gb = instance_type['local_gb']
allowed_size_bytes = allowed_size_gb * 1024 * 1024 * 1024
LOG.debug(
_("image_size_bytes=%(size_bytes)d, allowed_size_bytes="
"%(allowed_size_bytes)d") % locals())
if size_bytes > allowed_size_bytes:
LOG.info(
_("Image size %(size_bytes)d exceeded"
" instance_type allowed size "
"%(allowed_size_bytes)d") % locals())
raise exception.ImageTooLarge()
def create_image(self, prepare_template, base, size, *args, **kwargs):
@utils.synchronized(base, external=True, lock_path=self.lock_path)
def copy_qcow2_image(base, target, size):
# TODO(pbrady): Consider copying the cow image here
# with preallocation=metadata set for performance reasons.
# This would be keyed on a 'preallocate_images' setting.
libvirt_utils.create_cow_image(base, target)
if size:
disk.extend(target, size)
if not os.path.exists(base):
prepare_template(target=base, *args, **kwargs)
# NOTE(cfb): Having a flavor that sets the root size to 0 and having
# nova effectively ignore that size and use the size of the
# image is considered a feature at this time, not a bug.
if size and size < disk.get_disk_size(base):
LOG.error('%s virtual size larger than flavor root disk size %s' %
(base, size))
raise exception.ImageTooLarge()
if not os.path.exists(self.path):
with utils.remove_path_on_error(self.path):
copy_qcow2_image(base, self.path, size)
def create_image(self, prepare_template, base, size, *args, **kwargs):
@utils.synchronized(base, external=True, lock_path=self.lock_path)
def copy_qcow2_image(base, target, size):
qcow2_base = base
if size:
size_gb = size / (1024 * 1024 * 1024)
qcow2_base += '_%d' % size_gb
if not os.path.exists(qcow2_base):
with utils.remove_path_on_error(qcow2_base):
libvirt_utils.copy_image(base, qcow2_base)
disk.extend(qcow2_base, size)
libvirt_utils.create_cow_image(qcow2_base, target)
prepare_template(target=base, *args, **kwargs)
# NOTE(cfb): Having a flavor that sets the root size to 0 and having
# nova effectively ignore that size and use the size of the
# image is considered a feature at this time, not a bug.
if size and size < disk.get_disk_size(base):
LOG.error('%s virtual size larger than flavor root disk size %s' %
(base, size))
raise exception.ImageTooLarge()
with utils.remove_path_on_error(self.path):
copy_qcow2_image(base, self.path, size)