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# Copyright (C) 2018-2019 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:
Test cases in this module tests mkdir operation with subvol down
"""
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.brick_libs import bring_bricks_offline, \
bring_bricks_online, are_bricks_offline, are_bricks_online
from glustolibs.gluster.volume_libs import get_subvols
from glustolibs.gluster.glusterfile import file_exists
from glustolibs.gluster.dht_test_utils import find_hashed_subvol
from glustolibs.gluster.dht_test_utils import create_brickobjectlist
@runs_on([['distributed-replicated', 'distributed', 'distributed-dispersed'],
['glusterfs', 'nfs']])
class TestMkdirHashdown(GlusterBaseClass):
'''
test case:
- bring down a subvol
- create a directory so that it hashes the down subvol
- make sure mkdir does not succeed
'''
# Create Volume and mount according to config file
def setUp(self):
"""
Setup and mount volume or raise ExecutionError
"""
GlusterBaseClass.setUp.im_func(self)
# Setup Volume
ret = self.setup_volume_and_mount_volume(self.mounts)
if not ret:
g.log.error("Failed to Setup and Mount Volume")
raise ExecutionError("Failed to Setup and Mount Volume")
def test_mkdir_with_subvol_down(self):
'''
Test mkdir hashed to a down subvol
'''
# pylint: disable=too-many-locals
# pylint: disable=too-many-branches
# pylint: disable=too-many-statements
# pylint: disable=W0212
mount_obj = self.mounts[0]
mountpoint = mount_obj.mountpoint
# directory that needs to be created
parent_dir = mountpoint + '/parent'
child_dir = mountpoint + '/parent/child'
# get hashed subvol for name "parent"
subvols = (get_subvols(self.mnode, self.volname))['volume_subvols']
hashed, count = find_hashed_subvol(subvols, "/", "parent")
self.assertIsNotNone(hashed, "Could not find hashed subvol")
# bring target_brick offline
bring_bricks_offline(self.volname, subvols[count])
ret = are_bricks_offline(self.mnode, self.volname, subvols[count])
self.assertTrue(ret, ('Error in bringing down subvolume %s',
subvols[count]))
g.log.info('target subvol is offline')
# create parent dir
ret, _, err = g.run(self.clients[0], ("mkdir %s" % parent_dir))
self.assertNotEqual(ret, 0, ('Expected mkdir of %s to fail with %s',
parent_dir, err))
g.log.info('mkdir of dir %s failed as expected', parent_dir)
# check that parent_dir does not exist on any bricks and client
brickobject = create_brickobjectlist(subvols, "/")
for brickdir in brickobject:
adp = "%s/parent" % brickdir.path
bpath = adp.split(":")
self.assertTrue((file_exists(brickdir._host, bpath[1])) == 0,
('Expected dir %s not to exist on servers',
parent_dir))
for client in self.clients:
self.assertTrue((file_exists(client, parent_dir)) == 0,
('Expected dir %s not to exist on clients',
parent_dir))
g.log.info('dir %s does not exist on mount as expected', parent_dir)
# Bring up the subvols and create parent directory
bring_bricks_online(self.mnode, self.volname, subvols[count],
bring_bricks_online_methods=None)
ret = are_bricks_online(self.mnode, self.volname, subvols[count])
self.assertTrue(ret, ("Error in bringing back subvol %s online",
subvols[count]))
g.log.info('Subvol is back online')
ret, _, _ = g.run(self.clients[0], ("mkdir %s" % parent_dir))
self.assertEqual(ret, 0, ('Expected mkdir of %s to succeed',
parent_dir))
g.log.info('mkdir of dir %s successful', parent_dir)
# get hash subvol for name "child"
hashed, count = find_hashed_subvol(subvols, "parent", "child")
self.assertIsNotNone(hashed, "Could not find hashed subvol")
# bring target_brick offline
bring_bricks_offline(self.volname, subvols[count])
ret = are_bricks_offline(self.mnode, self.volname, subvols[count])
self.assertTrue(ret, ('Error in bringing down subvolume %s',
subvols[count]))
g.log.info('target subvol is offline')
# create child dir
ret, _, err = g.run(self.clients[0], ("mkdir %s" % child_dir))
self.assertNotEqual(ret, 0, ('Expected mkdir of %s to fail with %s',
child_dir, err))
g.log.info('mkdir of dir %s failed', child_dir)
# check if child_dir exists on any bricks
for brickdir in brickobject:
adp = "%s/parent/child" % brickdir.path
bpath = adp.split(":")
self.assertTrue((file_exists(brickdir._host, bpath[1])) == 0,
('Expected dir %s not to exist on servers',
child_dir))
for client in self.clients:
self.assertTrue((file_exists(client, child_dir)) == 0)
g.log.info('dir %s does not exist on mount as expected', child_dir)
@classmethod
def tearDownClass(cls):
# Unmount Volume and Cleanup Volume
g.log.info("Starting to Unmount Volume and Cleanup Volume")
ret = cls.unmount_volume_and_cleanup_volume(mounts=cls.mounts)
if not ret:
raise ExecutionError("Failed to Unmount Volume and Cleanup Volume")
g.log.info("Successful in Unmount Volume and Cleanup Volume")
# Calling GlusterBaseClass tearDown
GlusterBaseClass.tearDownClass.im_func(cls)
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