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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 datetime import datetime, timedelta
from time import sleep
from glusto.core import Glusto as g
from glustolibs.gluster.brick_libs import bring_bricks_offline
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.glusterdir import mkdir
from glustolibs.gluster.glusterfile import create_link_file
from glustolibs.gluster.heal_libs import monitor_heal_completion
from glustolibs.gluster.heal_ops import heal_info
from glustolibs.gluster.volume_libs import get_subvols, volume_start
from glustolibs.io.utils import (collect_mounts_arequal, validate_io_procs,
wait_for_io_to_complete)
from glustolibs.misc.misc_libs import upload_scripts
@runs_on([['dispersed', 'distributed-dispersed'], ['glusterfs', 'nfs']])
class TestIOsOnECVolume(GlusterBaseClass):
@classmethod
def setUpClass(cls):
cls.get_super_method(cls, 'setUpClass')()
cls.script_path = '/usr/share/glustolibs/io/scripts'
for file_ops in ('file_dir_ops.py', 'fd_writes.py'):
ret = upload_scripts(cls.clients,
'{}/{}'.format(cls.script_path, file_ops))
if not ret:
raise ExecutionError('Failed to upload IO scripts to client')
def setUp(self):
self.get_super_method(self, 'setUp')()
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
self.all_mounts_procs = []
if not ret:
raise ExecutionError('Failed to setup and mount volume')
def tearDown(self):
if self.all_mounts_procs:
ret = wait_for_io_to_complete(self.all_mounts_procs,
[self.mounts[1]] *
len(self.all_mounts_procs))
if not ret:
raise ExecutionError('Wait for IO completion failed on some '
'of the clients')
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Not able to unmount and cleanup volume")
self.get_super_method(self, 'tearDown')()
def _bring_bricks_online_and_monitor_heal(self, bricks):
"""Bring the bricks online and monitor heal until completion"""
ret, _, _ = volume_start(self.mnode, self.volname, force=True)
self.assertEqual(ret, 0, 'Not able to force start volume')
ret = monitor_heal_completion(self.mnode,
self.volname,
bricks=list(bricks))
self.assertTrue(ret, 'Heal is not complete for {}'.format(bricks))
# pylint: disable=too-many-locals
def test_io_with_cyclic_brick_down(self):
"""
Description: To check heal process on EC volume when brick is brought
down in a cyclic fashion
Steps:
- Create, start and mount an EC volume in two clients
- Create multiple files and directories including all file types on one
directory from client 1
- Take arequal check sum of above data
- Create another folder and pump different fops from client 2
- Fail and bring up redundant bricks in a cyclic fashion in all of the
subvols maintaining a minimum delay between each operation
- In every cycle create new dir when brick is down and wait for heal
- Validate heal info on volume when brick down erroring out instantly
- Validate arequal on brining the brick offline
"""
# Create a directory structure on mount from client 1
mount_obj = self.mounts[0]
cmd = ('/usr/bin/env python {}/file_dir_ops.py '
'create_deep_dirs_with_files --dir-depth 3 '
'--max-num-of-dirs 5 --fixed-file-size 10k '
'--num-of-files 9 {}'.format(
self.script_path,
mount_obj.mountpoint,
))
ret, _, _ = g.run(mount_obj.client_system, cmd)
self.assertEqual(ret, 0, 'Not able to create directory structure')
dir_name = 'user1'
for i in range(5):
ret = create_link_file(
mount_obj.client_system,
'{}/{}/testfile{}.txt'.format(mount_obj.mountpoint, dir_name,
i),
'{}/{}/testfile{}_sl.txt'.format(mount_obj.mountpoint,
dir_name, i),
soft=True)
self.assertTrue(ret, 'Not able to create soft links')
for i in range(5, 9):
ret = create_link_file(
mount_obj.client_system,
'{}/{}/testfile{}.txt'.format(mount_obj.mountpoint, dir_name,
i),
'{}/{}/testfile{}_hl.txt'.format(mount_obj.mountpoint,
dir_name, i))
self.assertTrue(ret, 'Not able to create hard links')
g.log.info('Successfully created directory structure consisting all '
'file types on mount')
# Take note of arequal checksum
ret, exp_arequal = collect_mounts_arequal(mount_obj, path=dir_name)
self.assertTrue(ret, 'Failed to get arequal checksum on mount')
# Get all the subvols in the volume
subvols = get_subvols(self.mnode, self.volname)
self.assertTrue(subvols.get('volume_subvols'), 'Not able to get '
'subvols of the volume')
# Create a dir, pump IO in that dir, offline b1, wait for IO and
# online b1, wait for heal of b1, bring b2 offline...
m_point, m_client = (self.mounts[1].mountpoint,
self.mounts[1].client_system)
cur_off_bricks = ''
for count, off_brick in enumerate(zip(*subvols.get('volume_subvols')),
start=1):
# Bring offline bricks online by force starting volume
if cur_off_bricks:
self._bring_bricks_online_and_monitor_heal(cur_off_bricks)
# Create a dir for running IO
ret = mkdir(m_client, '{}/dir{}'.format(m_point, count))
self.assertTrue(
ret, 'Not able to create directory for '
'starting IO before offline of brick')
# Start IO in the newly created directory
cmd = ('/usr/bin/env python {}/fd_writes.py -n 10 -t 480 -d 5 -c '
'16 --dir {}/dir{}'.format(self.script_path, m_point,
count))
proc = g.run_async(m_client, cmd)
self.all_mounts_procs.append(proc)
# Wait IO to partially fill the dir
sleep(10)
# Bring a single brick offline from all of subvols
ret = bring_bricks_offline(self.volname, list(off_brick))
self.assertTrue(ret,
'Not able to bring {} offline'.format(off_brick))
# Validate heal info errors out, on brining bricks offline in < 5s
start_time = datetime.now().replace(microsecond=0)
ret, _, _ = heal_info(self.mnode, self.volname)
end_time = datetime.now().replace(microsecond=0)
self.assertEqual(
ret, 0, 'Not able to query heal info status '
'of volume when a brick is offline')
self.assertLess(
end_time - start_time, timedelta(seconds=5),
'Query of heal info of volume when a brick is '
'offline is taking more than 5 seconds')
# Wait for some more IO to fill dir
sleep(10)
# Validate arequal on initial static dir
ret, act_arequal = collect_mounts_arequal(mount_obj, path=dir_name)
self.assertTrue(
ret, 'Failed to get arequal checksum on bringing '
'a brick offline')
self.assertEqual(
exp_arequal, act_arequal, 'Mismatch of arequal '
'checksum before and after killing a brick')
cur_off_bricks = off_brick
# Take note of ctime on mount
ret, prev_ctime, _ = g.run(m_client, 'date +%s')
self.assertEqual(ret, 0, 'Not able to get epoch time from client')
self._bring_bricks_online_and_monitor_heal(cur_off_bricks)
# Validate IO was happening during brick operations
# and compare ctime of recent file to current epoch time
ret = validate_io_procs(self.all_mounts_procs,
[self.mounts[0]] * len(self.all_mounts_procs))
self.assertTrue(ret, 'Not able to validate completion of IO on mounts')
self.all_mounts_procs *= 0 # don't validate IO in tearDown
ret, curr_ctime, _ = g.run(
m_client, "find {} -printf '%C@\n' -type f | "
'sort -r | head -n 1'.format(m_point))
self.assertEqual(
ret, 0, 'Not able to get ctime of last edited file from the mount')
self.assertGreater(
float(curr_ctime), float(prev_ctime), 'Not able '
'to validate IO was happening during brick operations')
g.log.info('Completed IO continuity test on EC volume successfully')
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