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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
from openshiftstoragelibs.baseclass import GlusterBlockBaseClass
from openshiftstoragelibs.command import cmd_run
from openshiftstoragelibs.openshift_ops import (
cmd_run_on_gluster_pod_or_node,
get_pod_name_from_dc,
oc_adm_manage_node,
oc_delete,
oc_get_schedulable_nodes,
oc_rsh,
wait_for_pod_be_ready,
wait_for_resource_absence,
wait_for_service_status_on_gluster_pod_or_node,
)
from openshiftstoragelibs.openshift_storage_libs import (
get_active_and_enabled_devices_from_mpath,
get_iscsi_block_devices_by_path,
get_iscsi_session,
get_mpath_name_from_device_name,
)
from openshiftstoragelibs.waiter import Waiter
class TestGlusterBlockStability(GlusterBlockBaseClass):
'''Class that contain gluster-block stability TC'''
def setUp(self):
super(TestGlusterBlockStability, self).setUp()
self.node = self.ocp_master_node[0]
def initiator_side_failures(self):
self.create_storage_class()
self.create_and_wait_for_pvc()
# Create app pod
dc_name, pod_name = self.create_dc_with_pvc(self.pvc_name)
iqn, _, node = self.verify_iscsi_sessions_and_multipath(
self.pvc_name, dc_name)
# Make node unschedulabe where pod is running
oc_adm_manage_node(
self.node, '--schedulable=false', nodes=[node])
# Make node schedulabe where pod is running
self.addCleanup(
oc_adm_manage_node, self.node, '--schedulable=true',
nodes=[node])
# Delete pod so it get respun on any other node
oc_delete(self.node, 'pod', pod_name)
wait_for_resource_absence(self.node, 'pod', pod_name)
# Wait for pod to come up
pod_name = get_pod_name_from_dc(self.node, dc_name)
wait_for_pod_be_ready(self.node, pod_name)
# Get the iscsi session from the previous node to verify logout
iscsi = get_iscsi_session(node, iqn, raise_on_error=False)
self.assertFalse(iscsi)
self.verify_iscsi_sessions_and_multipath(self.pvc_name, dc_name)
def test_initiator_side_failures_initiator_and_target_on_different_node(
self):
nodes = oc_get_schedulable_nodes(self.node)
# Get list of all gluster nodes
cmd = ("oc get pods --no-headers -l glusterfs-node=pod "
"-o=custom-columns=:.spec.nodeName")
g_nodes = cmd_run(cmd, self.node)
g_nodes = g_nodes.split('\n') if g_nodes else g_nodes
# Skip test case if required schedulable node count not met
if len(set(nodes) - set(g_nodes)) < 2:
self.skipTest("skipping test case because it needs at least two"
" nodes schedulable")
# Make containerized Gluster nodes unschedulable
if g_nodes:
# Make gluster nodes unschedulable
oc_adm_manage_node(
self.node, '--schedulable=false',
nodes=g_nodes)
# Make gluster nodes schedulable
self.addCleanup(
oc_adm_manage_node, self.node, '--schedulable=true',
nodes=g_nodes)
self.initiator_side_failures()
def test_initiator_side_failures_initiator_and_target_on_same_node(self):
# Note: This test case is supported for containerized gluster only.
nodes = oc_get_schedulable_nodes(self.node)
# Get list of all gluster nodes
cmd = ("oc get pods --no-headers -l glusterfs-node=pod "
"-o=custom-columns=:.spec.nodeName")
g_nodes = cmd_run(cmd, self.node)
g_nodes = g_nodes.split('\n') if g_nodes else g_nodes
# Get the list of nodes other than gluster
o_nodes = list((set(nodes) - set(g_nodes)))
# Skip the test case if it is crs setup
if not g_nodes:
self.skipTest("skipping test case because it is not a "
"containerized gluster setup. "
"This test case is for containerized gluster only.")
# Make other nodes unschedulable
oc_adm_manage_node(
self.node, '--schedulable=false', nodes=o_nodes)
# Make other nodes schedulable
self.addCleanup(
oc_adm_manage_node, self.node, '--schedulable=true', nodes=o_nodes)
self.initiator_side_failures()
def test_target_side_failures_gluster_blockd_kill_when_ios_going_on(self):
"""Run I/Os on block volume while gluster-blockd is stoped"""
self.create_and_wait_for_pvc()
# Create app pod
dc_name, pod_name = self.create_dc_with_pvc(self.pvc_name)
iqn, hacount, node = self.verify_iscsi_sessions_and_multipath(
self.pvc_name, dc_name)
cmd_run_io = 'dd if=/dev/urandom of=/mnt/%s bs=4k count=10000'
# Get the paths
devices = get_iscsi_block_devices_by_path(node, iqn)
mpath = get_mpath_name_from_device_name(node, list(devices.keys())[0])
mpath_dev = get_active_and_enabled_devices_from_mpath(node, mpath)
paths = mpath_dev['active'] + mpath_dev['enabled']
for path in paths:
node_ip = devices[path]
# Stop gluster-blockd service
cmd_run_on_gluster_pod_or_node(
self.node, 'systemctl stop gluster-blockd', node_ip)
self.addCleanup(
cmd_run_on_gluster_pod_or_node, self.node,
'systemctl start gluster-blockd', node_ip)
wait_for_pod_be_ready(self.node, pod_name, 6, 3)
# Verify tcmu-runner, gluster-block-target service is running
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'tcmu-runner', 'active', 'running', node_ip)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-block-target', 'active', 'exited', node_ip)
self.verify_all_paths_are_up_in_multipath(mpath, hacount, node)
# Run I/O
oc_rsh(self.node, pod_name, cmd_run_io % 'file1')
# Start service and verify status
cmd_run_on_gluster_pod_or_node(
self.node, 'systemctl start gluster-blockd', node_ip)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-blockd', 'active', 'running', node_ip)
# Run I/O
oc_rsh(self.node, pod_name, cmd_run_io % 'file2')
# Verify that active path is same as before
mpath_dev_new = get_active_and_enabled_devices_from_mpath(node, mpath)
self.assertEqual(mpath_dev['active'][0], mpath_dev_new['active'][0])
def test_target_side_failures_tcmu_runner_kill_when_ios_going_on(self):
"""Run I/Os on block volume while tcmu-runner is stoped"""
self.create_and_wait_for_pvc()
# Create app pod
dc_name, pod_name = self.create_dc_with_pvc(self.pvc_name)
iqn, hacount, node = self.verify_iscsi_sessions_and_multipath(
self.pvc_name, dc_name)
# Run I/O
cmd_run_io = 'dd if=/dev/urandom of=/mnt/%s bs=4k count=10000'
devices = get_iscsi_block_devices_by_path(node, iqn)
mpath = get_mpath_name_from_device_name(node, list(devices.keys())[0])
mpath_dev = get_active_and_enabled_devices_from_mpath(node, mpath)
paths = mpath_dev['active'] + mpath_dev['enabled']
for path in paths:
node_ip = devices[path]
# Stop tcmu-runner service
cmd_run_on_gluster_pod_or_node(
self.node, 'systemctl stop tcmu-runner', node_ip)
start_svc = ('systemctl start gluster-blockd gluster-block-target '
'tcmu-runner')
self.addCleanup(
cmd_run_on_gluster_pod_or_node, self.node, start_svc, node_ip)
wait_for_pod_be_ready(self.node, pod_name, 6, 3)
# Verify gluster-blockd gluster-block-target service is not running
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-blockd', 'inactive', 'dead', node_ip,
raise_on_error=False)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-block-target', 'failed',
'Result: exit-code', node_ip, raise_on_error=False)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'tcmu-runner', 'inactive', 'dead', node_ip,
raise_on_error=False)
# Wait for path to be failed
for w in Waiter(120, 5):
out = cmd_run('multipath -ll %s | grep %s' % (
mpath, path), node)
if 'failed faulty running' in out:
break
if w.expired:
self.assertIn(
'failed faulty running', out, 'path %s of mpath %s is '
'still up and running. It should not be running '
'because tcmu-runner is down' % (path, mpath))
# Run I/O
wait_for_pod_be_ready(self.node, pod_name, 6, 3)
oc_rsh(self.node, pod_name, cmd_run_io % 'file2')
# Start services
cmd_run_on_gluster_pod_or_node(self.node, start_svc, node_ip)
# Verify services are running
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'tcmu-runner', 'active', 'running', node_ip)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-block-target', 'active', 'exited', node_ip)
wait_for_service_status_on_gluster_pod_or_node(
self.node, 'gluster-blockd', 'active', 'running', node_ip)
# Wait for path to come up
self.verify_all_paths_are_up_in_multipath(mpath, hacount, node)
# Run I/O
wait_for_pod_be_ready(self.node, pod_name, 6, 3)
oc_rsh(self.node, pod_name, cmd_run_io % 'file3')
# Verify it returns to the original active path
for w in Waiter(120, 5):
mpath_dev_new = get_active_and_enabled_devices_from_mpath(
node, mpath)
if mpath_dev['active'][0] == mpath_dev_new['active'][0]:
break
if w.expired:
self.assertEqual(
mpath_dev['active'][0], mpath_dev_new['active'][0])
# Verify that all the paths are up
self.verify_all_paths_are_up_in_multipath(mpath, hacount, node)
|
