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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.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.glusterdir import mkdir
from glustolibs.gluster.rebalance_ops import (set_rebalance_throttle,
rebalance_start,
get_rebalance_status)
from glustolibs.gluster.volume_libs import form_bricks_list_to_add_brick
from glustolibs.gluster.brick_ops import add_brick
from glustolibs.misc.misc_libs import upload_scripts
from glustolibs.io.utils import validate_io_procs
@runs_on([['distributed', 'replicated', 'dispersed',
'arbiter', 'distributed-dispersed',
'distributed-replicated', 'distributed-arbiter'],
['glusterfs']])
class TestReaddirpWithRebalance(GlusterBaseClass):
def setUp(self):
"""
Setup and mount volume or raise ExecutionError
"""
# Calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
self.all_mounts_procs, self.io_validation_complete = [], False
# Setup Volume
ret = self.setup_volume_and_mount_volume([self.mounts[0]])
if not ret:
raise ExecutionError("Failed to Setup and Mount Volume")
# Upload io scripts for running IO on mounts
self.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
"file_dir_ops.py")
ret = upload_scripts(self.clients[0], self.script_upload_path)
if not ret:
raise ExecutionError("Failed to upload IO scripts to clients")
# Form brick list for expanding volume
self.add_brick_list = form_bricks_list_to_add_brick(
self.mnode, self.volname, self.servers, self.all_servers_info,
distribute_count=3)
if not self.add_brick_list:
raise ExecutionError("Volume %s: Failed to form bricks list for"
" expand" % self.volname)
g.log.info("Volume %s: Formed bricks list for expand", self.volname)
def tearDown(self):
# Unmount and cleanup original volume
ret = self.unmount_volume_and_cleanup_volume(mounts=[self.mounts[0]])
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_readdirp_with_rebalance(self):
"""
Description: Tests to check that all directories are read
and listed while rebalance is still in progress.
Steps :
1) Create a volume.
2) Mount the volume using FUSE.
3) Create a dir "master" on mount-point.
4) Create 8000 empty dirs (dir1 to dir8000) inside dir "master".
5) Now inside a few dirs (e.g. dir1 to dir10), create deep dirs
and inside every dir, create 50 files.
6) Collect the number of dirs present on /mnt/<volname>/master
7) Change the rebalance throttle to lazy.
8) Add-brick to the volume (at least 3 replica sets.)
9) Start rebalance using "force" option on the volume.
10) List the directories on dir "master".
"""
# pylint: disable=too-many-statements
# Start IO on mounts
m_point = self.mounts[0].mountpoint
ret = mkdir(self.mounts[0].client_system,
"{}/master".format(m_point))
self.assertTrue(ret, "mkdir of dir master failed")
# Create 8000 empty dirs
cmd = ("ulimit -n 64000; /usr/bin/env python {} create_deep_dir"
" --dir-length 8000 --dir-depth 0"
" {}/master/".format(self.script_upload_path, m_point))
proc = g.run_async(self.mounts[0].client_system, cmd,
user=self.mounts[0].user)
self.all_mounts_procs.append(proc)
g.log.info("IO on %s:%s is started successfully",
self.mounts[0].client_system, m_point)
# Validate 8000 empty dirs are created successfully
ret = validate_io_procs(self.all_mounts_procs, self.mounts[0])
self.assertTrue(ret, "IO failed on some of the clients")
g.log.info("IO is successful on all mounts")
# Create deep dirs and files
self.all_mounts_procs = []
cmd = ("/usr/bin/env python {} create_deep_dirs_with_files"
" --dir-length 10 --dir-depth 1 --max-num-of-dirs 50 "
" --num-of-files 50 --file-type empty-file"
" {}/master/".format(self.script_upload_path, m_point))
proc = g.run_async(self.mounts[0].client_system, cmd,
user=self.mounts[0].user)
self.all_mounts_procs.append(proc)
g.log.info("IO on %s:%s is started successfully",
self.mounts[0].client_system, m_point)
# Validate deep dirs and files are created successfully
ret = validate_io_procs(self.all_mounts_procs, self.mounts[0])
self.assertTrue(ret, "IO failed on some of the clients")
g.log.info("IO is successful on all mounts")
# Check the dir count before rebalance
cmd = ('cd {}/master; ls -l | wc -l'.format(m_point))
ret, dir_count_before, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "Failed to "
"get directory count")
g.log.info("Dir count before %s", dir_count_before)
# Change the rebalance throttle to lazy
ret, _, _ = set_rebalance_throttle(self.mnode, self.volname,
throttle_type='lazy')
self.assertEqual(ret, 0, "Failed to set rebal-throttle to lazy")
g.log.info("Rebal-throttle set to 'lazy' successfully")
# Add-bricks to the volume
ret, _, _ = add_brick(self.mnode, self.volname, self.add_brick_list)
self.assertEqual(ret, 0, "Failed to add-brick to the volume")
g.log.info("Added bricks to the volume successfully")
# Start rebalance using force
ret, _, _ = rebalance_start(self.mnode, self.volname, force=True)
self.assertEqual(ret, 0, "Failed to start rebalance")
g.log.info("Rebalance started successfully")
# Check if rebalance is in progress
rebalance_status = get_rebalance_status(self.mnode, self.volname)
status = rebalance_status['aggregate']['statusStr']
self.assertEqual(status, "in progress",
("Rebalance is not in 'in progress' state,"
" either rebalance is in compeleted state"
" or failed to get rebalance status"))
# Check the dir count after rebalance
cmd = ('cd {}/master; ls -l | wc -l'.format(m_point))
ret, dir_count_after, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "Failed to do lookup and"
" get directory count")
g.log.info("Dir count after %s", dir_count_after)
# Check if there is any data loss
self.assertEqual(set(dir_count_before), set(dir_count_after),
("There is data loss"))
g.log.info("The checksum before and after rebalance is same."
" There is no data loss.")
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