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# Copyright (C) 2018 Red Hat, Inc. <http://www.redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
EcBrickConsumableSize:
This test verifies that the size of the volume will be
'number of data bricks * least of brick size'.
"""
from glusto.core import Glusto as g
from glustolibs.gluster.brick_libs import get_all_bricks
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.volume_libs import (get_volume_info)
from glustolibs.gluster.lib_utils import get_size_of_mountpoint
from glustolibs.gluster.gluster_base_class import (GlusterBaseClass, runs_on)
@runs_on([['dispersed', 'distributed-dispersed'], ['glusterfs']])
class EcBrickConsumableSize(GlusterBaseClass):
# Method to setup the environment for test case
def setUp(self):
# Setup Volume and Mount Volume
g.log.info("Starting to Setup Volume and Mount Volume")
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
g.log.info("Successful in Setup Volume and Mount Volume")
# Test Case
def test_disperse_vol_size(self):
# pylint: disable=too-many-locals
mnode = self.mnode
volname = self.volname
client = self.mounts[0].client_system
mountpoint = self.mounts[0].mountpoint
# Obtain the volume size
vol_size = get_size_of_mountpoint(client, mountpoint)
self.assertIsNotNone(vol_size, ("Unable to get the volsize \
of %s.", volname))
# Retrieve the minimum brick size
min_brick_size = -1
bricks_list = get_all_bricks(mnode, volname)
for brick in bricks_list:
brick_node, brick_path = brick.split(":")
brick_size = get_size_of_mountpoint(brick_node, brick_path)
if ((brick_size is not None) and (min_brick_size == -1) or
(int(min_brick_size) > int(brick_size))):
min_brick_size = brick_size
# Calculate the consumable size
vol_info = get_volume_info(mnode, volname)
self.assertIsNotNone(vol_info, ("Unable to get the volinfo \
of %s.", volname))
disp_data_bricks = (int(vol_info[volname]['disperseCount']) -
int(vol_info[volname]['redundancyCount']))
dist_count = (int(vol_info[volname]['brickCount']) /
int(vol_info[volname]['disperseCount']))
consumable_size = ((int(min_brick_size) * int(disp_data_bricks)) *
int(dist_count))
# Verify the volume size is in allowable range
# Volume size should be above 98% of consumable size.
delta = (100 - ((float(vol_size)/float(consumable_size)) * 100))
self.assertTrue(delta < 2, ("Volume size is not in allowable range"))
g.log.info("Volume size is in allowable range")
# Write to the available size
block_size = 1024
write_size = ((int(vol_size) * (0.95) * int(block_size)) /
(int(dist_count)))
for i in range(1, int(dist_count)):
ret, _, _ = g.run(client, "fallocate -l {} {}/testfile{} \
".format(int(write_size), mountpoint, i))
self.assertTrue(ret == 0, ("Writing file of available size failed \
on volume %s", volname))
g.log.info("Successfully verified volume size")
# Try writing more than the available size
write_size = ((int(vol_size) * int(block_size)) * 1.2)
ret, _, _ = g.run(client, "fallocate -l {} {}/testfile1 \
".format(int(write_size), mountpoint))
self.assertTrue(ret != 0, ("Writing file of more than available \
size passed on volume %s", volname))
g.log.info("Successfully verified brick consumable size")
# Method to cleanup test setup
def tearDown(self):
# Stopping the volume
g.log.info("Starting to Unmount Volume and Cleanup Volume")
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to Unmount Volume and Cleanup Volume")
g.log.info("Successful in Unmount Volume and Cleanup Volume")
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