def create(self, volume_id, size=None, backup_source_volume_id=None,
backup_id=None, image_id=None, callback=None, lock=None,
account=None, cinder=None, scrub_callback=None):
op_start = time()
size_str = self._get_size_str(size)
tmp_vol = None
snet_glance = None
if image_id:
mgmt_glance = get_glance_conn(self.conf, tenant_id=account,
glance_urls=self.glance_mgmt_urls)
snet_glance = get_glance_conn(self.conf, tenant_id=account)
try:
glance_start = time()
image = mgmt_glance.head(image_id)
logger.info('STAT: glance.head %r. Time: %r' %
(image_id, time() - glance_start))
status = getattr(image, 'status', 'ACTIVE')
if status.upper() != 'ACTIVE':
raise InvalidImage("Non-active image status: %s" % status)
min_disk = getattr(image, 'min_disk', 0)
if min_disk > 127:
raise InvalidImage("Image > 127GB: %s" % image_id)
if min_disk:
multiplier = self._get_scratch_multiplier(image)
convert_gbs = int(min_disk * multiplier)
else:
convert_gbs = self.convert_gbs
tmp_vol = self.create_convert_scratch(image, convert_gbs)
except GlanceError, e:
logger.warning("Error fetching glance image: %s" % e)
raise InvalidImage("Error fetching image: %s" % image_id)
try:
log_duration()
finally:
if callback:
return callback(*args, **kwargs)
if any((backup_source_volume_id, backup_id)):
# TODO: clean up this volume if the spawn fails
dest_volume = self.get(volume_id)
size = (dest_volume['size'] / 1024 / 1024 / 1024)
spawn(lock, self.restore, dest_volume,
backup_source_volume_id, backup_id, size, cinder,
callback=callback_wrap, skip_fork=self.skip_fork)
elif image_id:
# TODO: clean up this volume if the spawn fails
snet_glance = get_glance_conn(self.conf, tenant_id=account)
dest_volume = self.get(volume_id)
spawn(lock, self.copy_image, dest_volume, image, snet_glance,
tmp_vol, scrub_callback, callback=callback_wrap,
skip_fork=self.skip_fork)
else:
log_duration()
def _max_snapshot_size(self, bytes):
chunk_size = 4096
exception_size = 16
origin_chunks = ((bytes - 1) // chunk_size) + 1
exceptions_per_chunk = ((chunk_size - 1) // exception_size) + 1
# +1 for rounding up, +1 for the last allocated (unused) chunk
exception_chunks = ((origin_chunks - 1) // exceptions_per_chunk) + 2
# +1 for the header chunk
if any((backup_source_volume_id, backup_id)):
# TODO: clean up this volume if the spawn fails
dest_volume = self.get(volume_id)
size = (dest_volume['size'] / 1024 / 1024 / 1024)
spawn(lock,
self.restore,
dest_volume,
backup_source_volume_id,
backup_id,
size,
cinder,
callback=callback_wrap,
skip_fork=self.skip_fork)
elif image_id:
# TODO: clean up this volume if the spawn fails
snet_glance = get_glance_conn(self.conf, tenant_id=account)
dest_volume = self.get(volume_id)
spawn(lock,
self.copy_image,
dest_volume,
image,
snet_glance,
tmp_vol,
scrub_callback,
callback=callback_wrap,
skip_fork=self.skip_fork)
else:
log_duration()
def _max_snapshot_size(self, bytes):
chunk_size = 4096
