summaryrefslogtreecommitdiffstats
path: root/tests/functional/provisioning/test_pv_resize.py
blob: e0ef9e664b9a7428184649984aa838f4c29667bd (plain)
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
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
from unittest import skip

import ddt
from glusto.core import Glusto as g
import pytest

from openshiftstoragelibs.baseclass import BaseClass
from openshiftstoragelibs.openshift_storage_libs import enable_pvc_resize
from openshiftstoragelibs.exceptions import ExecutionError
from openshiftstoragelibs import heketi_ops
from openshiftstoragelibs.openshift_ops import (
    get_gluster_vol_info_by_pvc_name,
    get_pod_name_from_dc,
    get_pv_name_from_pvc,
    oc_create_app_dc_with_io,
    oc_delete,
    oc_get_custom_resource,
    oc_rsh,
    resize_pvc,
    scale_dc_pod_amount_and_wait,
    verify_pv_size,
    verify_pvc_size,
    wait_for_events,
    wait_for_pod_be_ready,
    wait_for_resource_absence)
from openshiftstoragelibs.openshift_storage_version import (
    get_openshift_storage_version,
)
from openshiftstoragelibs.openshift_version import get_openshift_version
from openshiftstoragelibs import waiter


@ddt.ddt
class TestPvResizeClass(BaseClass):
    """Test cases for PV resize"""

    @classmethod
    def setUpClass(cls):
        super(TestPvResizeClass, cls).setUpClass()
        cls.node = cls.ocp_master_node[0]
        if get_openshift_version() < "3.9":
            cls.skip_me = True
            return
        enable_pvc_resize(cls.node)

    def setUp(self):
        super(TestPvResizeClass, self).setUp()
        if getattr(self, "skip_me", False):
            msg = ("pv resize is not available in openshift older than v3.9")
            g.log.error(msg)
            raise self.skipTest(msg)

    @pytest.mark.tier1
    @ddt.data(
        (True, True),
        (False, True),
        (False, False),
    )
    @ddt.unpack
    def test_pv_resize_with_prefix_for_name_and_size(
            self, create_vol_name_prefix=False, valid_size=True):
        """Validate PV resize with and without name prefix"""
        dir_path = "/mnt/"
        node = self.ocp_client[0]

        # Create PVC
        self.create_storage_class(
            allow_volume_expansion=True,
            create_vol_name_prefix=create_vol_name_prefix)
        pvc_name = self.create_and_wait_for_pvc()

        # Create DC with POD and attached PVC to it.
        dc_name = oc_create_app_dc_with_io(node, pvc_name)
        self.addCleanup(oc_delete, node, 'dc', dc_name)
        self.addCleanup(scale_dc_pod_amount_and_wait,
                        node, dc_name, 0)

        pod_name = get_pod_name_from_dc(node, dc_name)
        wait_for_pod_be_ready(node, pod_name)
        if create_vol_name_prefix:
            ret = heketi_ops.verify_volume_name_prefix(
                node, self.sc['volumenameprefix'],
                self.sc['secretnamespace'],
                pvc_name, self.heketi_server_url)
            self.assertTrue(ret, "verify volnameprefix failed")
        cmd = ("dd if=/dev/urandom of=%sfile "
               "bs=100K count=1000") % dir_path
        ret, out, err = oc_rsh(node, pod_name, cmd)
        self.assertEqual(
            ret, 0, "Failed to execute command %s on %s" % (cmd, node))
        pv_name = get_pv_name_from_pvc(node, pvc_name)

        # If resize size is invalid then size should not change
        if valid_size:
            cmd = ("dd if=/dev/urandom of=%sfile2 "
                   "bs=100K count=10000") % dir_path
            with self.assertRaises(AssertionError):
                ret, out, err = oc_rsh(node, pod_name, cmd)
                msg = ("Command '%s' was expected to fail on '%s' node. "
                       "But it returned following: ret is '%s', err is '%s' "
                       "and out is '%s'" % (cmd, node, ret, err, out))
                raise ExecutionError(msg)
            pvc_size = 2
            resize_pvc(node, pvc_name, pvc_size)
            verify_pvc_size(node, pvc_name, pvc_size)
            verify_pv_size(node, pv_name, pvc_size)
        else:
            invalid_pvc_size = 'ten'
            with self.assertRaises(AssertionError):
                resize_pvc(node, pvc_name, invalid_pvc_size)
            verify_pvc_size(node, pvc_name, 1)
            verify_pv_size(node, pv_name, 1)

        oc_delete(node, 'pod', pod_name)
        wait_for_resource_absence(node, 'pod', pod_name)
        pod_name = get_pod_name_from_dc(node, dc_name)
        wait_for_pod_be_ready(node, pod_name)
        cmd = ("dd if=/dev/urandom of=%sfile_new "
               "bs=50K count=10000") % dir_path
        ret, out, err = oc_rsh(node, pod_name, cmd)
        self.assertEqual(
            ret, 0, "Failed to execute command %s on %s" % (cmd, node))

    def _available_disk_free_space(self):
        min_free_space_gb = 3
        # Get available free space disabling redundant devices and nodes
        heketi_url = self.heketi_server_url
        node_id_list = heketi_ops.heketi_node_list(
            self.heketi_client_node, heketi_url)
        self.assertTrue(node_id_list)
        nodes = {}
        min_free_space = min_free_space_gb * 1024**2
        for node_id in node_id_list:
            node_info = heketi_ops.heketi_node_info(
                self.heketi_client_node, heketi_url, node_id, json=True)
            if (node_info['state'].lower() != 'online'
                    or not node_info['devices']):
                continue
            if len(nodes) > 2:
                out = heketi_ops.heketi_node_disable(
                    self.heketi_client_node, heketi_url, node_id)
                self.assertTrue(out)
                self.addCleanup(
                    heketi_ops.heketi_node_enable,
                    self.heketi_client_node, heketi_url, node_id)
            for device in node_info['devices']:
                if device['state'].lower() != 'online':
                    continue
                free_space = device['storage']['free']
                if (node_id in nodes.keys() or free_space < min_free_space):
                    out = heketi_ops.heketi_device_disable(
                        self.heketi_client_node, heketi_url, device['id'])
                    self.assertTrue(out)
                    self.addCleanup(
                        heketi_ops.heketi_device_enable,
                        self.heketi_client_node, heketi_url, device['id'])
                    continue
                nodes[node_id] = free_space
        if len(nodes) < 3:
            raise self.skipTest(
                "Could not find 3 online nodes with, "
                "at least, 1 online device having free space "
                "bigger than %dGb." % min_free_space_gb)

        # Calculate maximum available size for PVC
        available_size_gb = int(min(nodes.values()) / (1024**2))
        return available_size_gb

    def _write_file(self, pod_name, filename, filesize, mnt_path):
        # write file
        cmd = ('dd if=/dev/zero of={}/{} bs={} count=1'.format(
            mnt_path, filename, filesize))
        ret, _, err = oc_rsh(self.node, pod_name, cmd)
        self.assertFalse(ret, 'Failed to write file due to err {}'.format(err))
        wait_for_pod_be_ready(self.node, pod_name)

    def _get_mount_size(self, pod_name, mnt_path):
        cmd = ("df -h | grep {} | tail -1 | awk '{{print $4}}'".format(
            mnt_path))
        ret, out, err = oc_rsh(self.node, pod_name, cmd)
        self.assertFalse(ret, 'Failed to get size due to err {} in {}'.format(
            err, mnt_path))

        return out

    def _pv_resize(self, exceed_free_space):
        dir_path = "/mnt"
        pvc_size_gb = 1

        available_size_gb = self._available_disk_free_space()

        # Create PVC
        self.create_storage_class(allow_volume_expansion=True)
        pvc_name = self.create_and_wait_for_pvc(pvc_size=pvc_size_gb)

        # Create DC with POD and attached PVC to it
        dc_name = oc_create_app_dc_with_io(self.node, pvc_name)
        self.addCleanup(oc_delete, self.node, 'dc', dc_name)
        self.addCleanup(scale_dc_pod_amount_and_wait, self.node, dc_name, 0)
        pod_name = get_pod_name_from_dc(self.node, dc_name)
        wait_for_pod_be_ready(self.node, pod_name)

        if exceed_free_space:
            # Try to expand existing PVC exceeding free space
            resize_pvc(self.node, pvc_name, available_size_gb)
            wait_for_events(self.node, obj_name=pvc_name,
                            event_reason='VolumeResizeFailed')

            # Check that app POD is up and runnig then try to write data
            wait_for_pod_be_ready(self.node, pod_name)
            cmd = (
                "dd if=/dev/urandom of=%s/autotest bs=100K count=1" % dir_path)
            ret, out, err = oc_rsh(self.node, pod_name, cmd)
            self.assertEqual(
                ret, 0,
                "Failed to write data after failed attempt to expand PVC.")
        else:
            # Expand existing PVC using all the available free space
            expand_size_gb = available_size_gb - pvc_size_gb
            resize_pvc(self.node, pvc_name, expand_size_gb)
            verify_pvc_size(self.node, pvc_name, expand_size_gb)
            pv_name = get_pv_name_from_pvc(self.node, pvc_name)
            verify_pv_size(self.node, pv_name, expand_size_gb)
            wait_for_events(
                self.node, obj_name=pvc_name,
                event_reason='VolumeResizeSuccessful')

            # Recreate app POD
            oc_delete(self.node, 'pod', pod_name)
            wait_for_resource_absence(self.node, 'pod', pod_name)
            pod_name = get_pod_name_from_dc(self.node, dc_name)
            wait_for_pod_be_ready(self.node, pod_name)

            # Write data on the expanded PVC
            cmd = ("dd if=/dev/urandom of=%s/autotest "
                   "bs=1M count=1025" % dir_path)
            ret, out, err = oc_rsh(self.node, pod_name, cmd)
            self.assertEqual(
                ret, 0, "Failed to write data on the expanded PVC")

    @pytest.mark.tier2
    def test_pv_resize_no_free_space(self):
        """Validate PVC resize fails if there is no free space available"""
        if not self.is_containerized_gluster():
            self.skipTest(
                "Skipping this test case as CRS version check "
                "is not implemented")

        if get_openshift_storage_version() < "3.11.5":
            self.skipTest(
                "This test case is not supported for < OCS 3.11.5 builds due "
                "to bug BZ-1653567")

        self._pv_resize(exceed_free_space=True)

    @pytest.mark.tier0
    def test_pv_resize_by_exact_free_space(self):
        """Validate PVC resize when resized by exact available free space"""
        self._pv_resize(exceed_free_space=False)

    @pytest.mark.tier1
    def test_pv_resize_try_shrink_pv_size(self):
        """Validate whether reducing the PV size is allowed"""
        dir_path = "/mnt/"
        node = self.ocp_master_node[0]

        # Create PVC
        pv_size = 5
        self.create_storage_class(allow_volume_expansion=True)
        pvc_name = self.create_and_wait_for_pvc(pvc_size=pv_size)

        # Create DC with POD and attached PVC to it.
        dc_name = oc_create_app_dc_with_io(node, pvc_name)
        self.addCleanup(oc_delete, node, 'dc', dc_name)
        self.addCleanup(scale_dc_pod_amount_and_wait,
                        node, dc_name, 0)

        pod_name = get_pod_name_from_dc(node, dc_name)
        wait_for_pod_be_ready(node, pod_name)

        cmd = ("dd if=/dev/urandom of=%sfile "
               "bs=100K count=3000") % dir_path
        ret, out, err = oc_rsh(node, pod_name, cmd)
        self.assertEqual(
            ret, 0, "Failed to execute command %s on %s" % (cmd, node))
        pvc_resize = 2
        with self.assertRaises(AssertionError):
            resize_pvc(node, pvc_name, pvc_resize)
        verify_pvc_size(node, pvc_name, pv_size)
        pv_name = get_pv_name_from_pvc(node, pvc_name)
        verify_pv_size(node, pv_name, pv_size)
        cmd = ("dd if=/dev/urandom of=%sfile_new "
               "bs=100K count=2000") % dir_path
        ret, out, err = oc_rsh(node, pod_name, cmd)
        self.assertEqual(
            ret, 0, "Failed to execute command %s on %s" % (cmd, node))

    @pytest.mark.tier1
    def test_pv_resize_when_heketi_down(self):
        """Create a PVC and try to expand it when heketi is down, It should
        fail. After heketi is up, expand PVC should work.
        """
        self.create_storage_class(allow_volume_expansion=True)
        pvc_name = self.create_and_wait_for_pvc()
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        pv_name = get_pv_name_from_pvc(self.node, pvc_name)
        custom = (r':metadata.annotations.'
                  r'"gluster\.kubernetes\.io\/heketi-volume-id"')
        vol_id = oc_get_custom_resource(self.node, 'pv', custom, pv_name)[0]

        h_vol_info = heketi_ops.heketi_volume_info(
            self.heketi_client_node, self.heketi_server_url, vol_id, json=True)

        # Bring the heketi POD down
        scale_dc_pod_amount_and_wait(
            self.node, self.heketi_dc_name, pod_amount=0)
        self.addCleanup(
            scale_dc_pod_amount_and_wait, self.node,
            self.heketi_dc_name, pod_amount=1)

        cmd = 'dd if=/dev/urandom of=/mnt/%s bs=614400k count=1'
        ret, out, err = oc_rsh(self.node, pod_name, cmd % 'file1')
        self.assertFalse(ret, 'Not able to write file with err: %s' % err)
        wait_for_pod_be_ready(self.node, pod_name, 10, 5)

        resize_pvc(self.node, pvc_name, 2)
        wait_for_events(
            self.node, pvc_name, obj_type='PersistentVolumeClaim',
            event_type='Warning', event_reason='VolumeResizeFailed')

        # Verify volume was not expanded
        vol_info = get_gluster_vol_info_by_pvc_name(self.node, pvc_name)
        self.assertEqual(vol_info['gluster_vol_id'], h_vol_info['name'])
        self.assertEqual(
            len(vol_info['bricks']['brick']), len(h_vol_info['bricks']))

        # Bring the heketi POD up
        scale_dc_pod_amount_and_wait(
            self.node, self.heketi_dc_name, pod_amount=1)

        # Verify volume expansion
        verify_pvc_size(self.node, pvc_name, 2)
        vol_info = get_gluster_vol_info_by_pvc_name(self.node, pvc_name)
        self.assertFalse(len(vol_info['bricks']['brick']) % 3)
        self.assertLess(
            len(h_vol_info['bricks']), len(vol_info['bricks']['brick']))

        # Wait for remount after expansion
        for w in waiter.Waiter(timeout=30, interval=5):
            ret, out, err = oc_rsh(
                self.node, pod_name,
                "df -Ph /mnt | awk '{print $2}' | tail -1")
            self.assertFalse(ret, 'Failed with err: %s and Output: %s' % (
                err, out))
            if out.strip() == '2.0G':
                break

        # Write data making sure we have more space than it was
        ret, out, err = oc_rsh(self.node, pod_name, cmd % 'file2')
        self.assertFalse(ret, 'Not able to write file with err: %s' % err)

        # Verify pod is running
        wait_for_pod_be_ready(self.node, pod_name, 10, 5)

    @skip("Blocked by BZ-1547069")
    @pytest.mark.tier2
    def test_pvc_resize_size_greater_than_available_space(self):
        """Re-size PVC to greater value than available volume size and then
        expand volume to support maximum size.
        """
        sc_name = self.create_storage_class(
            create_vol_name_prefix=True, allow_volume_expansion=True)
        pvc_name = self.create_and_wait_for_pvc(sc_name=sc_name, pvc_size=1)
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        # Verify the size of volume mounted
        cmd_on_pod = "df -Ph /mnt | tail -1 | awk '{print $2}'"
        _, stdout, _ = oc_rsh(self.node, pod_name, cmd_on_pod)
        self.assertGreaterEqual(
            int(stdout.strip('.0M\n')), 1000,
            "Size of %s not equal to 1G" % pvc_name)
        self.assertLessEqual(
            int(stdout.strip('.0M\n')), 1024,
            "Size of %s not equal to 1G" % pvc_name)
        available_size_gb = self._available_disk_free_space()
        with self.assertRaises(AssertionError):
            resize_pvc(
                self.ocp_master_node[0], pvc_name, available_size_gb + 1)
        resize_pvc(self.ocp_master_node[0], pvc_name, available_size_gb)
        verify_pvc_size(self.ocp_master_node[0], pvc_name, available_size_gb)

    @pytest.mark.tier1
    def test_pv_resize_device_disabled(self):
        """Validate resize after disabling all devices except one"""
        h_node, h_url = self.heketi_client_node, self.heketi_server_url

        # expand volume size and path volume is mounted
        expand_size, dir_path = 7, "/mnt"

        # Get nodes info
        heketi_node_id_list = heketi_ops.heketi_node_list(
            h_node, h_url)
        if len(heketi_node_id_list) < 3:
            self.skipTest(
                "At-least 3 gluster nodes are required to execute test case")

        self.create_storage_class(allow_volume_expansion=True)
        pvc_name = self.create_and_wait_for_pvc(pvc_size=2)
        vol_info = get_gluster_vol_info_by_pvc_name(self.node, pvc_name)
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        self._write_file(pod_name, "file1", "1G", dir_path)

        with self.assertRaises(AssertionError):
            self._write_file(pod_name, "file2", "3G", dir_path)

        # Prepare first 3 nodes and then disable other devices.
        for node_id in heketi_node_id_list[:3]:
            node_info = heketi_ops.heketi_node_info(
                h_node, h_url, node_id, json=True)
            self.assertTrue(node_info, "Failed to get node info")
            devices = node_info.get("devices", None)
            self.assertTrue(
                devices, "Node {} does not have devices".format(node_id))
            if devices[0]["state"].strip().lower() != "online":
                self.skipTest(
                    "Skipping test as it expects to first device to"
                    " be enabled")
            for device in devices[1:]:
                heketi_ops.heketi_device_disable(
                    h_node, h_url, device["id"])
                self.addCleanup(
                    heketi_ops.heketi_device_enable,
                    h_node, h_url, device["id"])

        usedsize_before_resize = self._get_mount_size(pod_name, dir_path)

        # Resize pvc
        resize_pvc(self.node, pvc_name, expand_size)
        verify_pvc_size(self.node, pvc_name, expand_size)
        vol_info = get_gluster_vol_info_by_pvc_name(self.node, pvc_name)
        self.assertFalse(len(vol_info['bricks']['brick']) % 3)

        for node_id in heketi_node_id_list[:3]:
            for device in devices[1:]:
                heketi_ops.heketi_device_enable(
                    h_node, h_url, device["id"])

        self._write_file(pod_name, "file3", "3G", dir_path)

        usedsize_after_resize = self._get_mount_size(pod_name, dir_path)
        self.assertGreater(
            int(usedsize_before_resize.strip('%')),
            int(usedsize_after_resize.strip('%')),
            "Mount size {} should be greater than {}".format(
                usedsize_before_resize, usedsize_after_resize))

        self._write_file(pod_name, "file4", "1024", dir_path)

        # Validate dist-rep volume with 6 bricks after pv resize
        vol_info = get_gluster_vol_info_by_pvc_name(self.node, pvc_name)
        self.assertEqual(
            6, len(vol_info['bricks']['brick']),
            "Expected bricks count is 6, but actual brick count is {}".format(
                len(vol_info['bricks']['brick'])))