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# Copyright (C) 2020 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.
import os
import copy
from socket import gethostbyname
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,
get_all_bricks)
from glustolibs.gluster.heal_libs import is_volume_in_split_brain
from glustolibs.gluster.heal_ops import get_heal_info_summary
from glustolibs.gluster.glusterfile import get_file_stat
from glustolibs.gluster.volume_ops import get_volume_info
from glustolibs.gluster.volume_libs import get_subvols
from glustolibs.gluster.glusterfile import get_pathinfo
from glustolibs.gluster.lib_utils import (collect_bricks_arequal,
add_user, del_user)
from glustolibs.io.utils import collect_mounts_arequal
@runs_on([['replicated', 'distributed-replicated', 'arbiter',
'distributed-arbiter'],
['glusterfs']])
class TestMetadataSelfHealOpenfd(GlusterBaseClass):
def setUp(self):
# Calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
self.user = "qa"
self.nodes = []
self.nodes = copy.deepcopy(self.servers)
self.nodes.append(self.clients[0])
# Create user for changing ownership
for node in self.nodes:
ret = add_user(node, self.user)
self.assertTrue(ret, "Failed to create user")
# Setup Volume and Mount Volume
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to Setup and Mount_Volume")
def tearDown(self):
"""
Cleanup and umount volume
"""
# Calling GlusterBaseClass teardown
self.get_super_method(self, 'tearDown')()
for node in self.nodes:
del_user(node, self.user)
# Cleanup and umount volume
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to umount the vol & cleanup Volume")
g.log.info("Successful in umounting the volume and Cleanup")
def _verify_stat_info(self, nodes_to_check, test_file):
"""
Helper method to verify stat on all bricks and client.
"""
for node in nodes_to_check:
filepath = nodes_to_check[node] + "/" + test_file
stat_dict = get_file_stat(node, filepath)
self.assertIsNotNone(stat_dict, "stat on {} failed"
.format(test_file))
self.assertEqual(stat_dict['username'], self.user,
"Expected qa but found {}"
.format(stat_dict['username']))
self.assertEqual(stat_dict['groupname'], self.user,
"Expected gid qa but found {}"
.format(stat_dict['groupname']))
self.assertEqual(stat_dict['access'], '777',
"Expected permission 777 but found {}"
.format(stat_dict['access']))
def test_metadata_self_heal_on_open_fd(self):
"""
Description: Pro-active metadata self heal on open fd
Steps :
1) Create a volume.
2) Mount the volume using FUSE.
3) Create test executable on volume mount.
4) While test execution is in progress, bring down brick1.
5) From mount point, change ownership, permission, group id of
the test file.
6) While test execution is in progress, bring back brick1 online.
7) Do stat on the test file to check ownership, permission,
group id on mount point and on bricks
8) Stop test execution.
9) Do stat on the test file to check ownership, permission,
group id on mount point and on bricks.
10) There should be no pending heals in the heal info command.
11) There should be no split-brain.
12) Calculate arequal of the bricks and mount point and it
should be same.
"""
# pylint: disable=too-many-statements,too-many-locals
# pylint: disable=too-many-branches
bricks_list = get_all_bricks(self.mnode, self.volname)
self.assertIsNotNone(bricks_list, 'Brick list is None')
client = self.clients[0]
# Create test executable file on mount point
m_point = self.mounts[0].mountpoint
test_file = "testfile.sh"
cmd = ("echo 'while true; do echo 'Press CTRL+C to stop execution';"
" done' >> {}/{}".format(m_point, test_file))
ret, _, _ = g.run(client, cmd)
self.assertEqual(ret, 0, "Failed to create test file")
# Execute the test file
cmd = "cd {}; sh {}".format(m_point, test_file)
g.run_async(client, cmd)
# Get pid of the test file
_cmd = "ps -aux | grep -v grep | grep testfile.sh | awk '{print $2}'"
ret, out, _ = g.run(client, _cmd)
self.assertEqual(ret, 0, "Failed to get pid of test file execution")
# Bring brick1 offline
ret = bring_bricks_offline(self.volname, [bricks_list[1]])
self.assertTrue(ret, 'Failed to bring bricks {} '
'offline'.format(bricks_list[1]))
ret = are_bricks_offline(self.mnode, self.volname,
[bricks_list[1]])
self.assertTrue(ret, 'Bricks {} are not '
'offline'.format(bricks_list[1]))
# change uid, gid and permission from client
cmd = "chown {} {}/{}".format(self.user, m_point, test_file)
ret, _, _ = g.run(client, cmd)
self.assertEqual(ret, 0, "chown failed")
cmd = "chgrp {} {}/{}".format(self.user, m_point, test_file)
ret, _, _ = g.run(client, cmd)
self.assertEqual(ret, 0, "chgrp failed")
cmd = "chmod 777 {}/{}".format(m_point, test_file)
ret, _, _ = g.run(client, cmd)
self.assertEqual(ret, 0, "chown failed")
# Bring brick1 online
ret = bring_bricks_online(self.mnode, self.volname,
[bricks_list[1]])
self.assertTrue(ret, 'Failed to bring bricks {} online'
.format(bricks_list[1]))
ret = get_pathinfo(client, "{}/{}"
.format(m_point, test_file))
self.assertIsNotNone(ret, "Unable to get "
"trusted.glusterfs.pathinfo of file")
nodes_to_check = {}
bricks_list = []
for brick in ret['brickdir_paths']:
node, brick_path = brick.split(':')
if node[0:2].isdigit():
nodes_to_check[node] = os.path.dirname(brick_path)
path = node + ":" + os.path.dirname(brick_path)
else:
nodes_to_check[gethostbyname(node)] = (os.path.dirname(
brick_path))
path = gethostbyname(node) + ":" + os.path.dirname(brick_path)
bricks_list.append(path)
nodes_to_check[client] = m_point
# Verify that the changes are successful on bricks and client
self._verify_stat_info(nodes_to_check, test_file)
# Kill the test executable file
for pid in out.split('\n')[:-1]:
cmd = "kill -s 9 {}".format(pid)
ret, _, _ = g.run(client, cmd)
self.assertEqual(ret, 0, "Failed to kill test file execution")
# Verify that the changes are successful on bricks and client
self._verify_stat_info(nodes_to_check, test_file)
# Verify there are no pending heals
heal_info = get_heal_info_summary(self.mnode, self.volname)
self.assertIsNotNone(heal_info, 'Unable to get heal info')
for brick in bricks_list:
self.assertEqual(int(heal_info[brick]['numberOfEntries']),
0, ("Pending heal on brick {} ".format(brick)))
# Check for split-brain
ret = is_volume_in_split_brain(self.mnode, self.volname)
self.assertFalse(ret, 'Volume is in split-brain state')
g.log.info('Volume is not in split-brain state')
# Get arequal for mount
ret, arequals = collect_mounts_arequal(self.mounts)
self.assertTrue(ret, 'Failed to get arequal')
mount_point_total = arequals[0].splitlines()[-1].split(':')[-1]
# Collecting data bricks
vol_info = get_volume_info(self.mnode, self.volname)
self.assertIsNotNone(vol_info, 'Unable to get volume info')
data_brick_list = []
for brick in bricks_list:
for brick_info in vol_info[self.volname]["bricks"]["brick"]:
if brick_info["name"] == brick:
if brick_info["isArbiter"] == "0":
data_brick_list.append(brick)
bricks_list = data_brick_list
# Get arequal on bricks and compare with mount_point_total
# It should be the same
arbiter = self.volume_type.find('arbiter') >= 0
subvols = get_subvols(self.mnode, self.volname)['volume_subvols']
stop = len(subvols[0]) - 1 if arbiter else len(subvols[0])
for subvol in subvols:
subvol = [i for i in subvol if i in bricks_list]
if subvol:
ret, arequal = collect_bricks_arequal(subvol[0:stop])
self.assertTrue(ret, 'Unable to get arequal checksum '
'on {}'.format(subvol[0:stop]))
self.assertEqual(len(set(arequal)), 1, 'Mismatch of arequal '
'checksum among {} is '
'identified'.format(subvol[0:stop]))
brick_total = arequal[-1].splitlines()[-1].split(':')[-1]
self.assertEqual(brick_total, mount_point_total,
"Arequals for mountpoint and {} "
"are not equal".format(subvol[0:stop]))
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