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# Copyright (C) 2021 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.
# pylint: disable=too-many-statements, too-many-locals, unused-variable
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 (get_all_bricks,
bring_bricks_offline,
bring_bricks_online,
are_bricks_offline)
from glustolibs.gluster.heal_ops import trigger_heal
from glustolibs.gluster.heal_libs import (is_volume_in_split_brain,
monitor_heal_completion,
is_heal_complete)
from glustolibs.gluster.volume_ops import set_volume_options
from glustolibs.gluster.glusterfile import create_link_file
@runs_on([['distributed-replicated'], ['glusterfs']])
class TestSelfHeal(GlusterBaseClass):
@classmethod
def setUpClass(cls):
# Calling GlusterBaseClass setUpClass
cls.get_super_method(cls, 'setUpClass')()
# Override Volumes
if cls.volume_type == "distributed-replicated":
# Define x3 distributed-replicated volume
cls.volume['voltype'] = {
'type': 'distributed-replicated',
'dist_count': 2,
'replica_count': 3,
'transport': 'tcp'}
# Setup Volume and Mount Volume
ret = cls.setup_volume_and_mount_volume(cls.mounts)
if not ret:
raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
g.log.info("Successful in Setup Volume and Mount Volume")
@classmethod
def tearDownClass(cls):
# Cleanup Volume
ret = cls.unmount_volume_and_cleanup_volume(cls.mounts)
if not ret:
raise ExecutionError("Failed to create volume")
g.log.info("Successful in cleaning up Volume %s", cls.volname)
cls.get_super_method(cls, 'tearDownClass')()
def _test_brick_down_with_file_rename(self, pfile, rfile, brick):
# Bring brick offline
g.log.info('Bringing brick %s offline', brick)
ret = bring_bricks_offline(self.volname, brick)
self.assertTrue(ret, 'Failed to bring brick %s offline'
% brick)
ret = are_bricks_offline(self.mnode, self.volname,
[brick])
self.assertTrue(ret, 'Brick %s is not offline'
% brick)
g.log.info('Bringing brick %s offline is successful',
brick)
# Rename file
cmd = ("mv %s/%s %s/%s"
% (self.mounts[0].mountpoint, pfile,
self.mounts[0].mountpoint, rfile))
ret, _, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "rename of file failed")
# Bring brick back online
g.log.info('Bringing brick %s online', brick)
ret = bring_bricks_online(self.mnode, self.volname,
brick)
self.assertTrue(ret, 'Failed to bring brick %s online' %
brick)
g.log.info('Bringing brick %s online is successful', brick)
def test_afr_heal_with_brickdown_hardlink(self):
"""
Steps:
1. Create 2 * 3 distribute replicate volume and disable all heals
2. Create a file and 3 hardlinks to it from fuse mount.
3. Kill brick4, rename HLINK1 to an appropriate name so that
it gets hashed to replicate-1
4. Likewise rename HLINK3 and HLINK7 as well, killing brick5 and brick6
respectively each time. i.e. a different brick of the 2nd
replica is down each time.
5. Now enable shd and let selfheals complete.
6. Heal should complete without split-brains.
"""
bricks_list = get_all_bricks(self.mnode, self.volname)
options = {"metadata-self-heal": "off",
"entry-self-heal": "off",
"data-self-heal": "off",
"self-heal-daemon": "off"}
g.log.info("setting options %s", options)
ret = set_volume_options(self.mnode, self.volname, options)
self.assertTrue(ret, ("Unable to set volume option %s for"
"volume %s" % (options, self.volname)))
g.log.info("Successfully set %s for volume %s", options, self.volname)
cmd = ("touch %s/FILE" % self.mounts[0].mountpoint)
ret, _, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "file creation failed")
# Creating a hardlink for the file created
for i in range(1, 4):
ret = create_link_file(self.clients[0],
'{}/FILE'.format(self.mounts[0].mountpoint),
'{}/HLINK{}'.format
(self.mounts[0].mountpoint, i))
self.assertTrue(ret, "Unable to create hard link file ")
# Bring brick3 offline,Rename file HLINK1,and bring back brick3 online
self._test_brick_down_with_file_rename("HLINK1", "NEW-HLINK1",
bricks_list[3])
# Bring brick4 offline,Rename file HLINK2,and bring back brick4 online
self._test_brick_down_with_file_rename("HLINK2", "NEW-HLINK2",
bricks_list[4])
# Bring brick5 offline,Rename file HLINK3,and bring back brick5 online
self._test_brick_down_with_file_rename("HLINK3", "NEW-HLINK3",
bricks_list[5])
# Setting options
options = {"self-heal-daemon": "on"}
ret = set_volume_options(self.mnode, self.volname, options)
self.assertTrue(ret, 'Failed to set options %s' % options)
g.log.info("Option 'self-heal-daemon' is set to 'on' successfully")
# Start healing
ret = trigger_heal(self.mnode, self.volname)
self.assertTrue(ret, 'Heal is not started')
g.log.info('Healing is started')
# 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')
# Check data on mount point
cmd = ("ls %s" % (self.mounts[0].mountpoint))
ret, _, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "failed to fetch data from mount point")
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