def shrink_share(self, share, new_size, share_server=None):
"""Shrinks size of existing share."""
dataset_name = self._get_dataset_name(share)
consumed_space = self.get_zfs_option(dataset_name, 'used')
consumed_space = utils.translate_string_size_to_float(consumed_space)
if consumed_space >= new_size:
raise exception.ShareShrinkingPossibleDataLoss(
share_id=share['id'])
self.zfs('set', 'quota=%sG' % new_size, dataset_name)
def _get_pools_info(self):
"""Returns info about all pools used by backend."""
pools = []
for zpool in self.zpool_list:
free_size = self.get_zpool_option(zpool, 'free')
free_size = utils.translate_string_size_to_float(free_size)
total_size = self.get_zpool_option(zpool, 'size')
total_size = utils.translate_string_size_to_float(total_size)
pool = {
'pool_name': zpool,
'total_capacity_gb': float(total_size),
'free_capacity_gb': float(free_size),
'reserved_percentage':
self.configuration.reserved_share_percentage,
}
if self.configuration.replication_domain:
pool['replication_type'] = 'readable'
pools.append(pool)
return pools
def _get_directory_usage(self, share):
share_dir = '/' + share['name']
args = ('--xml', 'volume', 'quota', self.gluster_manager.volume,
'list', share_dir)
try:
out, err = self.gluster_manager.gluster_call(*args)
except exception.GlusterfsException:
LOG.error('Unable to get quota share %s', share['name'])
raise
volxml = etree.fromstring(out)
usage_byte = volxml.find('./volQuota/limit/used_space').text
usage = utils.translate_string_size_to_float(usage_byte)
return usage
def test_translate_string_size_to_float_negative(self, string, multiplier):
actual = utils.translate_string_size_to_float(string, multiplier)
self.assertIsNone(actual)
def test_translate_string_size_to_float_positive(self, request, expected):
actual = utils.translate_string_size_to_float(*request)
self.assertEqual(expected, actual)
def test_translate_string_size_to_float_negative(self, string, multiplier):
actual = utils.translate_string_size_to_float(string, multiplier)
self.assertIsNone(actual)
def test_translate_string_size_to_float_positive(self, request, expected):
actual = utils.translate_string_size_to_float(*request)
self.assertEqual(expected, actual)
