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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 random import sample
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 (
verify_all_process_of_volume_are_online,
wait_for_volume_process_to_be_online)
from glustolibs.gluster.brick_libs import (
get_all_bricks,
bring_bricks_offline,
bring_bricks_online,
are_bricks_offline)
from glustolibs.gluster.heal_libs import (monitor_heal_completion,
is_volume_in_split_brain)
from glustolibs.gluster.glusterdir import mkdir
from glustolibs.io.utils import validate_io_procs
@runs_on([['arbiter', 'distributed-arbiter'], ['glusterfs']])
class TestAfrReadWrite(GlusterBaseClass):
"""
Description:
Arbiter test writes and reads from a file
"""
def setUp(self):
# Calling GlusterBaseClass
self.get_super_method(self, 'setUp')()
# 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")
def tearDown(self):
"""
Cleanup and umount volume
"""
# 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")
# Calling GlusterBaseClass teardown
self.get_super_method(self, 'tearDown')()
def _bring_bricks_online_heal(self, mnode, volname, bricks_list):
"""
Bring bricks online and monitor heal completion
"""
# Bring bricks online
ret = bring_bricks_online(
mnode, volname, bricks_list,
bring_bricks_online_methods=['volume_start_force'])
self.assertTrue(ret, 'Failed to bring bricks online')
# Wait for volume processes to be online
ret = wait_for_volume_process_to_be_online(mnode, volname)
self.assertTrue(ret, ("Failed to wait for volume {} processes to "
"be online".format(volname)))
# Verify volume's all process are online
ret = verify_all_process_of_volume_are_online(mnode, volname)
self.assertTrue(ret, ("Volume {} : All process are not online".format
(volname)))
g.log.info("Volume %s : All process are online", volname)
# Monitor heal completion
ret = monitor_heal_completion(mnode, volname)
self.assertTrue(ret, 'Heal has not yet completed')
# Check for split-brain
ret = is_volume_in_split_brain(mnode, volname)
self.assertFalse(ret, 'Volume is in split-brain state')
def test_afr_read_write(self):
"""
Test read and write of file
Description:
- Get the bricks from the volume
- Creating directory test_write_and_read_file
- Write from 1st client
- Read from 2nd client
- Select brick to bring offline
- Bring brick offline
- Validating IO's on client1
- Validating IO's on client2
- Bring bricks online
- Wait for volume processes to be online
- Verify volume's all process are online
- Monitor heal completion
- Check for split-brain
- Bring 2nd brick offline
- Check if brick is offline
- Write from 1st client
- Read from 2nd client
- Bring bricks online
- Wait for volume processes to be online
- Verify volume's all process are online
- Monitor heal completion
- Check for split-brain
- Get arequal after getting bricks online
"""
# pylint: disable=too-many-branches,too-many-statements,too-many-locals
# Get the bricks from the volume
bricks_list = get_all_bricks(self.mnode, self.volname)
g.log.info("Brick List : %s", bricks_list)
# Creating directory test_write_and_read_file
ret = mkdir(self.mounts[0].client_system,
"{}/test_write_and_read_file"
.format(self.mounts[0].mountpoint))
self.assertTrue(ret, "Failed to create directory")
g.log.info("Directory 'test_write_and_read_file' on %s created "
"successfully", self.mounts[0])
# Write from 1st client
cmd_to_write = (
'cd %s/test_write_and_read_file ; for i in `seq 1 5000` ;'
'do echo -e "Date:`date`\n" >> test_file ;echo -e "'
'`cal`\n" >> test_file ; done ; cd ..'
% self.mounts[0].mountpoint)
proc1 = g.run_async(self.mounts[0].client_system,
cmd_to_write)
# Read from 2nd client
cmd = ('cd %s/ ;for i in {1..30};'
'do cat test_write_and_read_file/test_file;done'
% self.mounts[1].mountpoint)
proc2 = g.run_async(self.mounts[1].client_system, cmd)
# Bring brick offline
bricks_to_bring_offline = sample(bricks_list, 2)
ret = bring_bricks_offline(self.volname, bricks_to_bring_offline[0])
self.assertTrue(ret, 'Failed to bring bricks {} offline'.
format(bricks_to_bring_offline))
# Check brick is offline
ret = are_bricks_offline(self.mnode, self.volname,
[bricks_to_bring_offline[0]])
self.assertTrue(ret, 'Bricks {} are not offline'.
format(bricks_to_bring_offline[0]))
# Validating IO's
for proc, mount in zip([proc1, proc2], self.mounts):
ret = validate_io_procs([proc], mount)
self.assertTrue(ret, "IO failed on client")
g.log.info("Successfully validated all IO's")
self._bring_bricks_online_heal(self.mnode, self.volname, bricks_list)
# Bring down second brick
ret = bring_bricks_offline(self.volname, bricks_to_bring_offline[1])
self.assertTrue(ret, 'Failed to bring bricks {} offline'.
format(bricks_to_bring_offline[1]))
# Check if brick is offline
ret = are_bricks_offline(self.mnode, self.volname,
[bricks_to_bring_offline[1]])
self.assertTrue(ret, 'Bricks {} are not offline'.
format(bricks_to_bring_offline[1]))
# Write from 1st client
ret, _, _ = g.run(self.mounts[0].client_system, cmd_to_write)
self.assertEqual(ret, 0, "Failed to write to file")
g.log.info("Successfully written to file")
# Read from 2nd client
cmd = ('cd %s/ ;cat test_write_and_read_file/test_file'
% self.mounts[0].mountpoint)
ret, _, _ = g.run(self.mounts[0].client_system, cmd)
self.assertEqual(ret, 0, "Failed to read file on mountpoint")
g.log.info("Successfully read file on mountpoint")
self._bring_bricks_online_heal(self.mnode, self.volname, bricks_list)
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