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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.
from glusto.core import Glusto as g
from glustolibs.gluster.gluster_base_class import (GlusterBaseClass, runs_on)
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.volume_libs import get_subvols
from glustolibs.gluster.heal_libs import (monitor_heal_completion,
is_heal_complete,
is_volume_in_split_brain,
is_shd_daemon_running)
from glustolibs.misc.misc_libs import upload_scripts
from glustolibs.io.utils import (collect_mounts_arequal,
validate_io_procs,
list_all_files_and_dirs_mounts,
wait_for_io_to_complete)
from glustolibs.gluster.gluster_init import (start_glusterd,
stop_glusterd)
from glustolibs.misc.misc_libs import kill_process
@runs_on([['arbiter', 'distributed-arbiter'],
['glusterfs', 'nfs']])
class TestArbiterSelfHeal(GlusterBaseClass):
"""
Description:
Arbiter Test cases related to
healing in default configuration of the volume
"""
@classmethod
def setUpClass(cls):
# Calling GlusterBaseClass setUpClass
cls.get_super_method(cls, 'setUpClass')()
# Upload io scripts for running IO on mounts
cls.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
"file_dir_ops.py")
ret = upload_scripts(cls.clients, [cls.script_upload_path])
if not ret:
raise ExecutionError("Failed to upload IO scripts to clients %s"
% cls.clients)
g.log.info("Successfully uploaded IO scripts to clients %s",
cls.clients)
def setUp(self):
# Calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
self.all_mounts_procs = []
self.io_validation_complete = False
# 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")
def tearDown(self):
"""
If test method failed before validating IO, tearDown waits for the
IO's to complete and checks for the IO exit status
Cleanup and umount volume
"""
if not self.io_validation_complete:
ret = wait_for_io_to_complete(self.all_mounts_procs, self.mounts)
if not ret:
raise ExecutionError("IO failed on some of the clients")
g.log.info("IO is successful on all mounts")
# List all files and dirs created
ret = list_all_files_and_dirs_mounts(self.mounts)
if not ret:
raise ExecutionError("Failed to list all files and dirs")
# 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")
# Calling GlusterBaseClass teardown
self.get_super_method(self, 'tearDown')()
def test_heal_full_after_deleting_files(self):
"""
- Create IO
- Calculate arequal from mount
- kill glusterd process and glustershd process on arbiter nodes
- Delete data from backend from the arbiter nodes
- Start glusterd process and force start the volume
to bring the processes online
- Check if heal is completed
- Check for split-brain
- Calculate arequal checksum and compare it
"""
# pylint: disable=too-many-locals,too-many-statements
# Creating files on client side
for mount_obj in self.mounts:
g.log.info("Generating data for %s:%s",
mount_obj.client_system, mount_obj.mountpoint)
# Create dirs with file
command = ("/usr/bin/env python %s create_deep_dirs_with_files "
"-d 2 -l 2 -n 2 -f 20 %s"
% (self.script_upload_path, mount_obj.mountpoint))
proc = g.run_async(mount_obj.client_system, command,
user=mount_obj.user)
self.all_mounts_procs.append(proc)
self.io_validation_complete = False
# Validate IO
ret = validate_io_procs(self.all_mounts_procs, self.mounts)
self.assertTrue(ret, "IO failed on some of the clients")
self.io_validation_complete = True
g.log.info("IO is successful on all mounts")
# Get arequal before killing gluster processes on arbiter node
ret, result_before_killing_procs = collect_mounts_arequal(self.mounts)
self.assertTrue(ret, 'Failed to get arequal')
g.log.info('Getting arequal before getting bricks offline '
'is successful')
# Kill glusterd process and glustershd process on arbiter node
subvols = get_subvols(self.mnode, self.volname)['volume_subvols']
for subvol in subvols:
arbiter = subvol[-1]
node, brick_path = arbiter.split(':')
# Stop glusterd
ret = stop_glusterd(node)
self.assertTrue(ret, "Failed to stop the glusterd on arbiter node")
# Stop glustershd
ret = kill_process(node, "glustershd")
if not ret:
# Validate glustershd process is not running
self.assertFalse(
is_shd_daemon_running(self.mnode, node, self.volname),
"The glustershd process is still running.")
g.log.info('Killed glusterd and glustershd for all arbiter '
'brick successfully')
# Delete data from backend from the arbiter node
for subvol in subvols:
arbiter = subvol[-1]
# Clearing the arbiter bricks
node, brick_path = arbiter.split(':')
ret, _, err = g.run(node, 'rm -rf %s/*' % brick_path)
self.assertFalse(
ret, err)
g.log.info('Clearing for all arbiter brick is successful')
# Start glusterd process on each arbiter
for subvol in subvols:
arbiter = subvol[-1]
node, brick_path = arbiter.split(':')
ret = start_glusterd(node)
self.assertTrue(
ret, "Failed to start glusterd on the arbiter node")
# Monitor heal completion
ret = monitor_heal_completion(self.mnode, self.volname)
self.assertTrue(ret, 'Heal has not yet completed')
# Check if heal is completed
ret = is_heal_complete(self.mnode, self.volname)
self.assertTrue(ret, 'Heal is not complete')
g.log.info('Heal is completed successfully')
# 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 after healing
ret, result_after_healing = collect_mounts_arequal(self.mounts)
self.assertTrue(ret, 'Failed to get arequal')
g.log.info('Getting arequal after getting bricks online '
'is successful')
# Comparing arequals before before killing arbiter processes
# and after healing
self.assertEqual(
result_before_killing_procs, result_after_healing,
'Arequals arequals before before killing arbiter '
'processes and after healing are not equal')
g.log.info('Arequals before killing arbiter '
'processes and after healing are equal')
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