def shrink_share(self, share, new_size, share_server=None):
server_details = share_server['backend_details']
helper = self._get_helper(share)
export_location = share['export_locations'][0]['path']
mount_path = helper.get_share_path_by_export_location(
server_details, export_location)
consumed_space = self._get_consumed_space(mount_path, server_details)
LOG.debug("Consumed space on share: %s", consumed_space)
if consumed_space >= new_size:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
volume = self._get_volume(self.admin_context, share['id'])
helper.disable_access_for_maintenance(server_details, share['name'])
self._unmount_device(share, server_details)
try:
self._resize_filesystem(server_details, volume, new_size=new_size)
except exception.Invalid:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
except Exception as e:
msg = _("Cannot shrink share: %s") % six.text_type(e)
raise exception.Invalid(msg)
finally:
self._mount_device(share, server_details, volume)
helper.restore_access_after_maintenance(server_details,
share['name'])
def shrink_share(self, share, new_size, share_server=None):
"""Shrink a sub-directory/share in the GlusterFS volume."""
usage = self._get_directory_usage(share)
consumed_limit = int(math.ceil(usage))
if consumed_limit > new_size:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self._set_directory_quota(share, new_size)
def shrink_filesystem(self, share_id, fs, new_size_gb):
size = utils.gib_to_byte(new_size_gb)
try:
fs.shrink(size, user_cap=True)
except storops_ex.UnityNothingToModifyError:
LOG.debug('The size of the file system %(id)s is %(size)s '
'bytes.', {'id': fs.get_id(), 'size': size})
except storops_ex.UnityShareShrinkSizeTooSmallError:
LOG.error('The used size of the file system %(id)s is '
'bigger than input shrink size,'
'it may cause date loss.', {'id': fs.get_id()})
raise exception.ShareShrinkingPossibleDataLoss(share_id=share_id)
return size
def test_shrink_share_over_consumed(self):
self.mock_object(
self.driver,
"_resize_share",
mock.Mock(side_effect=exception.ShareShrinkingPossibleDataLoss(
share_id=test_nfs_share["id"])),
)
self.assertRaises(
exception.ShareShrinkingPossibleDataLoss,
self.driver.shrink_share,
test_nfs_share,
_MOCK_SHARE_SIZE / 2,
)
def shrink_share(self, share, new_size, share_server=None):
LOG.debug("shrink_share {id} {size}".format(
id=share['id'], size=new_size))
new_bytes = self._to_bytes(new_size)
used = self.volume_client.get_used_bytes(self._share_path(share))
if used > new_bytes:
# While in fact we can "shrink" our volumes to less than their
# used bytes (it's just a quota), raise error anyway to avoid
# confusing API consumers that might depend on typical shrink
# behaviour.
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self.volume_client.set_max_bytes(self._share_path(share), new_bytes)
def _resize_share(self, share, new_size):
dataset_name = self._make_share_name(share)
self._get_flashblade_filesystem_by_name(dataset_name)
consumed_size = (self._sys.file_systems.list_file_systems(
names=[dataset_name]).items[0].space.virtual)
attr = {}
if consumed_size >= new_size * units.Gi:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share["id"])
attr["provisioned"] = new_size * units.Gi
n_attr = purity_fb.FileSystem(**attr)
LOG.debug("Resizing filesystem...")
self._sys.file_systems.update_file_systems(name=dataset_name,
attributes=n_attr)
def shrink_share(self, share, new_size, share_server=None):
"""Shrinks size of existing share."""
LOG.debug(
'Shrinking share: %(name)s to %(size)sG.', {
'name': share['name'], 'size': new_size})
url = 'storage/pools/{}/filesystems/{}%2F{}'.format(self.pool_name,
self.fs_prefix,
share['name'])
used = self.nef.get(url)['bytesUsed'] / units.Gi
if used > new_size:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self._set_quota(share['name'], new_size)
self.provisioned_capacity += (share['size'] - new_size)
def shrink_share(self, share, new_size, share_server=None):
"""Shrinks size of existing share."""
LOG.debug(
'Shrinking share: %(name)s to %(size)sG.', {
'name': self._get_share_name(share), 'size': new_size})
share_path = self._get_dataset_path(share)
share_data = self.nef.filesystems.get(share_path)
used = share_data['bytesUsedBySelf'] / units.Gi
if used > new_size:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=self._get_share_name(share))
if not self.configuration.nexenta_thin_provisioning:
self._set_reservation(share, new_size)
self._set_quota(share, new_size)
self.provisioned_capacity += (share['size'] - new_size)
def _set_share_size(self, share, size):
volume_name = self._get_volume_name(context.get_admin_context(), share)
try:
if share['size'] > size:
info = self._maprfs_util.get_volume_info(volume_name)
used = info['totalused']
if int(used) >= int(size) * units.Ki:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self._maprfs_util.set_volume_size(volume_name, size)
except exception.ProcessExecutionError:
msg = (_('Failed to set space quota for the share %(share_name)s.')
% {'share_name': share['name']})
LOG.exception(msg)
raise exception.MapRFSException(msg=msg)
def _shrink_share(self, share_id, old_size, new_size):
"""Shrinks a share to new size.
:param share_id: ID of share that will be shrunk.
:param old_size: Current size of share that will be shrunk.
:param new_size: New size of share after shrink operation.
"""
self._ensure_share(share_id)
usage = self.hnas.get_share_usage(share_id)
LOG.debug("Usage space in share %(share)s: %(usage)sG", {
'share': share_id,
'usage': usage
})
if new_size > usage:
self.hnas.modify_quota(share_id, new_size)
else:
raise exception.ShareShrinkingPossibleDataLoss(share_id=share_id)
def shrink_share(self, share, new_size, share_server=None):
"""Shrink a share to new_size."""
lcfg = self.configuration
details = self.zfssa.get_share(lcfg.zfssa_pool,
lcfg.zfssa_project,
share['id'])
used_space = details['space_data']
new_size_byte = int(new_size) * units.Gi
if used_space > new_size_byte:
LOG.error('%(used).1fGB of share %(id)s is already used. '
'Cannot shrink to %(newsize)dGB.',
{'used': float(used_space) / units.Gi,
'id': share['id'],
'newsize': new_size})
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
arg = self.create_arg(new_size)
self.zfssa.modify_share(lcfg.zfssa_pool, lcfg.zfssa_project,
share['id'], arg)
def shrink_share(self, share, new_size, share_server=None):
LOG.debug("Shrinking share in HSP: %(shr_id)s.",
{'shr_id': share['id']})
file_system = self.hsp.get_file_system(share['id'])
usage = file_system['properties']['used-capacity'] / units.Gi
LOG.debug("Usage for share %(shr_id)s in HSP: %(usage)sG.", {
'shr_id': share['id'],
'usage': usage
})
if new_size > usage:
self.hsp.resize_file_system(file_system['id'], new_size * units.Gi)
else:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
LOG.info("Share %(shr_id)s successfully shrunk to "
"%(shr_size)sG.", {
'shr_id': share['id'],
'shr_size': new_size
})
def shrink_share(self, share, new_size, share_server=None):
# resize FS subvolume/share
LOG.debug("[%(be)s]: shrink_share: share=%(id)s, size=%(sz)s.", {
"be": self.backend_name,
"id": share['id'],
"sz": new_size
})
argdict = {
"vol_name": self.volname,
"sub_name": share["id"],
"new_size": self._to_bytes(new_size),
"no_shrink": True,
}
if share["share_group_id"] is not None:
argdict.update({"group_name": share["share_group_id"]})
try:
rados_command(self.rados_client, "fs subvolume resize", argdict)
except exception.ShareBackendException as e:
if 'would be lesser than' in str(e).lower():
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
raise
def shrink_share(self, share, new_size, share_server=None):
pool_name = share_utils.extract_host(share['host'], level='pool')
pool_data = self._get_share_pool_data(pool_name)
share_name = share['id'].replace('-', '')
folder_name = self._extract_lv_name(pool_data)
command_line = ['fquota', 'status', pool_data['id'],
folder_name, '-t', 'folder']
rc, quota_status = self._execute(command_line)
for share_quota in quota_status:
if share_quota['name'] == share_name:
used_space = round(_bi_to_gi(float(share_quota['used'])), 2)
if new_size < used_space:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self._set_share_size(pool_data['id'], pool_name, share_name, new_size)
LOG.info('Successfully Shrink Share [%(share)s] '
'to size [%(new_size)s G].', {
'share': share['id'],
'new_size': new_size})
