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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.
""" Description:
Volume start when one of the brick is absent
"""
import random
from glusto.core import Glusto as g
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.volume_ops import (volume_create, volume_start,
volume_status)
from glustolibs.gluster.lib_utils import form_bricks_list
@runs_on([['distributed', 'replicated', 'distributed-replicated'],
['glusterfs']])
class TestVolumeStatusWithAbsentBricks(GlusterBaseClass):
def tearDown(self):
"""
tearDown for every test
"""
# stopping the volume and Cleaning up the volume
ret = self.cleanup_volume()
if not ret:
raise ExecutionError("Failed Cleanup the Volume %s"
% self.volname)
# Calling GlusterBaseClass tearDown
GlusterBaseClass.tearDown.im_func(self)
def test_volume_absent_bricks(self):
'''
-> Create Volume
-> Remove any one Brick directory
-> Start Volume
-> Check the gluster volume status
'''
num_of_bricks = 0
replica = True
if self.volume_type == 'distributed':
num_of_bricks = 3
replica = False
elif self.volume_type == 'replicated':
num_of_bricks = 3
elif self.volume_type == 'distributed-replicated':
num_of_bricks = 6
# Forming brick list
brick_list = form_bricks_list(self.mnode, self.volname, num_of_bricks,
self.servers, self.all_servers_info)
if replica:
# Creating Volume
ret, _, _ = volume_create(self.mnode, self.volname, brick_list,
replica_count=3)
self.assertEqual(ret, 0, "Volume creation failed for %s"
% self.volname)
g.log.info("volume created successfully %s", self.volname)
else:
# Creating Volume
ret, _, _ = volume_create(self.mnode, self.volname, brick_list)
self.assertEqual(ret, 0, "Volume creation failed for %s"
% self.volname)
g.log.info("volume created successfully %s", self.volname)
# Command for removing brick directory
random_brick = random.choice(brick_list)
node, brick_path = random_brick.split(r':')
cmd = 'rm -rf ' + brick_path
# Removing brick directory of one node
ret, _, _ = g.run(node, cmd)
self.assertEqual(ret, 0, "Failed to remove brick dir")
g.log.info("Brick directory removed successfully")
# Starting volume
ret, _, err = volume_start(self.mnode, self.volname)
self.assertNotEqual(ret, 0, "Unexpected: Volume started successfully "
"even though brick directory is removed "
"for %s" % self.volname)
g.log.info("Expected: Failed to start volume %s", self.volname)
# Checking volume start failed message
msg = "Failed to find brick directory"
self.assertIn(msg, err, "Expected message is %s but volume start "
"command failed with this "
"message %s" % (msg, err))
g.log.info("Volume start failed with correct error message %s", err)
# Checking Volume status
ret, _, err = volume_status(self.mnode, self.volname)
self.assertNotEqual(ret, 0, "Success in getting volume status, volume "
"status should fail when volume is in "
"not started state ")
g.log.info("Failed to get volume status which is expected")
# Checking volume status message
msg = ' '.join(['Volume', self.volname, 'is not started'])
self.assertIn(msg, err, 'Incorrect error message for gluster vol '
'status')
g.log.info("Correct error message for volume status")
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