1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
# 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 02110-131 USA.
"""
Description:
Rebalance with one brick down in replica
"""
from random import choice
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.rebalance_ops import (rebalance_start,
wait_for_rebalance_to_complete)
from glustolibs.gluster.volume_libs import (
expand_volume,
log_volume_info_and_status,
volume_start)
from glustolibs.gluster.brick_libs import (
get_all_bricks,
bring_bricks_offline)
from glustolibs.gluster.heal_libs import monitor_heal_completion
from glustolibs.io.utils import (
wait_for_io_to_complete,
collect_mounts_arequal)
from glustolibs.misc.misc_libs import upload_scripts
@runs_on([['distributed-arbiter', 'distributed-replicated',
'distributed-dispersed'], ['glusterfs']])
class TestRebalanceWithBrickDown(GlusterBaseClass):
""" Rebalance with brick down in replica"""
def setUp(self):
"""Setup Volume"""
# Calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
self.all_mounts_procs = []
# Setup and mount the volume
g.log.info("Starting to setup and mount the volume")
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to Setup Volume and Mount it")
# Upload IO script for running IO on mounts
self.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
"file_dir_ops.py")
ret = upload_scripts(self.mounts[0].client_system,
self.script_upload_path)
if not ret:
raise ExecutionError("Failed to upload IO scripts to clients")
def test_rebalance_with_brick_down(self):
"""
Rebalance with brick down in replica
- Create a Replica volume.
- Bring down one of the brick down in the replica pair
- Do some IO and create files on the mount point
- Add a pair of bricks to the volume
- Initiate rebalance
- Bring back the brick which was down.
- After self heal happens, all the files should be present.
"""
# Log the volume info and status before brick is down.
log_volume_info_and_status(self.mnode, self.volname)
# Bring one fo the bricks offline
brick_list = get_all_bricks(self.mnode, self.volname)
ret = bring_bricks_offline(self.volname, choice(brick_list))
# Log the volume info and status after brick is down.
log_volume_info_and_status(self.mnode, self.volname)
# Create files at mountpoint.
cmd = (
"/usr/bin/env python %s create_files "
"-f 2000 --fixed-file-size 1k --base-file-name file %s"
% (self.script_upload_path, self.mounts[0].mountpoint))
proc = g.run_async(
self.mounts[0].client_system, cmd, user=self.mounts[0].user)
self.all_mounts_procs.append(proc)
# Wait for IO to complete.
self.assertTrue(wait_for_io_to_complete(self.all_mounts_procs,
self.mounts[0]),
"IO failed on some of the clients")
g.log.info("IO completed on the clients")
# Compute the arequal checksum before bringing all bricks online
arequal_before_all_bricks_online = collect_mounts_arequal(self.mounts)
# Log the volume info and status before expanding volume.
log_volume_info_and_status(self.mnode, self.volname)
# Expand the volume.
ret = expand_volume(self.mnode, self.volname, self.servers,
self.all_servers_info)
self.assertTrue(ret, ("Failed to expand the volume %s", self.volname))
g.log.info("Expanding volume is successful on "
"volume %s", self.volname)
# Log the voluem info after expanding volume.
log_volume_info_and_status(self.mnode, self.volname)
# Start Rebalance.
ret, _, _ = rebalance_start(self.mnode, self.volname)
self.assertEqual(ret, 0, ("Failed to start rebalance on the volume "
"%s", self.volname))
g.log.info("Successfully started rebalance on the volume %s",
self.volname)
# Wait for rebalance to complete
ret = wait_for_rebalance_to_complete(self.mnode, self.volname)
self.assertTrue(ret, ("Rebalance is not yet complete on the volume "
"%s", self.volname))
g.log.info("Rebalance is successfully complete on the volume %s",
self.volname)
# Log the voluem info and status before bringing all bricks online
log_volume_info_and_status(self.mnode, self.volname)
# Bring all bricks online.
ret, _, _ = volume_start(self.mnode, self.volname, force=True)
self.assertEqual(ret, 0, "Not able to start volume with force option")
g.log.info("Volume start with force option successful.")
# Log the volume info and status after bringing all beicks online
log_volume_info_and_status(self.mnode, self.volname)
# Monitor heal completion.
ret = monitor_heal_completion(self.mnode, self.volname)
self.assertTrue(ret, "heal has not yet completed")
g.log.info("Self heal completed")
# Compute the arequal checksum after all bricks online.
arequal_after_all_bricks_online = collect_mounts_arequal(self.mounts)
# Comparing arequal checksum before and after the operations.
self.assertEqual(arequal_before_all_bricks_online,
arequal_after_all_bricks_online,
"arequal checksum is NOT MATCHING")
g.log.info("arequal checksum is SAME")
def tearDown(self):
"""tear Down callback"""
# Unmount Volume and cleanup.
g.log.info("Starting to Unmount Volume and Cleanup")
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Filed to Unmount Volume and "
"Cleanup Volume")
g.log.info("Successful in Unmount Volume and cleanup.")
# Calling GlusterBaseClass tearDown
self.get_super_method(self, 'tearDown')()
|
