def test_expand_arbiter_volume_according_to_avg_file_size(
self, avg_file_size, expected_brick_size, vol_expand=True):
"""Validate expansion of arbiter volume with diff avg file size"""
data_hosts = []
arbiter_hosts = []
# set tags arbiter:disabled, arbiter:required
for i, node_id in enumerate(self.node_id_list):
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'node',
node_id, 'disabled' if i < 2 else 'required')
node_info = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id,
json=True)
(data_hosts.append(node_info['hostnames']['storage'][0]) if i < 2
else arbiter_hosts.append(node_info['hostnames']['storage'][0]))
self.assertEqual(node_info['tags']['arbiter'],
'disabled' if i < 2 else 'required')
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True,
allow_volume_expansion=True,
arbiter_avg_file_size=avg_file_size)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc()
vol_expanded = False
for i in range(2):
vol_info = get_gluster_vol_info_by_pvc_name(
self.node, self.pvc_name)
bricks = (
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info,
arbiter_bricks=(2 if vol_expanded else 1),
data_bricks=(4 if vol_expanded else 2)))
# verify arbiter bricks lies on arbiter hosts
for brick in bricks['arbiter_list']:
ip, brick_name = brick['name'].split(':')
self.assertIn(ip, arbiter_hosts)
# verify the size of arbiter brick
cmd = "df -h %s --output=size | tail -1" % brick_name
out = cmd_run_on_gluster_pod_or_node(self.node, cmd, ip)
self.assertEqual(out, expected_brick_size)
# verify that data bricks lies on data hosts
for brick in bricks['data_list']:
self.assertIn(brick['name'].split(':')[0], data_hosts)
if vol_expanded or not vol_expand:
break
# Expand PVC and verify the size
pvc_size = 2
resize_pvc(self.node, self.pvc_name, pvc_size)
verify_pvc_size(self.node, self.pvc_name, pvc_size)
vol_expanded = True
def test_arbiter_volume_expand_using_pvc(self):
"""Validate arbiter volume expansion by PVC creation"""
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True,
allow_volume_expansion=True)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc()
# Get vol info
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(vol_info)
pvc_size = 2
resize_pvc(self.node, self.pvc_name, pvc_size)
verify_pvc_size(self.node, self.pvc_name, pvc_size)
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info, arbiter_bricks=2, data_bricks=4)
def test_arbiter_pvc_create(self):
"""Validate dynamic provision of an arbiter volume"""
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc()
# Get vol info
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(vol_info)
def test_verify_arbiter_brick_able_to_contain_expected_amount_of_files(
self, pvc_size_gb, avg_file_size):
"""Validate arbiter brick creation with different avg file size"""
# Create sc with gluster arbiter info
self.create_storage_class(
is_arbiter_vol=True, arbiter_avg_file_size=avg_file_size)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc(pvc_size_gb)
# Get volume info
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
# Verify proportion of data and arbiter bricks
bricks_info = (
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info))
expected_file_amount = pvc_size_gb * 1024**2 / (avg_file_size or 64)
expected_file_amount = (expected_file_amount /
bricks_info['arbiter_amount'])
# Try to create expected amount of files on arbiter brick mount
passed_arbiter_bricks = []
not_found = "Mount Not Found"
for brick in bricks_info['arbiter_list']:
# "brick path" looks like following:
# ip_addr:/path/to/vg/brick_unique_name/brick
gluster_ip, brick_path = brick["name"].split(":")
brick_path = brick_path[0:-6]
cmd = "mount | grep %s || echo '%s'" % (brick_path, not_found)
out = cmd_run_on_gluster_pod_or_node(self.node, cmd, gluster_ip)
if out != not_found:
cmd = (
"python -c \"["
" open('%s/foo_file{0}'.format(i), 'a').close()"
" for i in range(%s)"
"]\"" % (brick_path, expected_file_amount)
)
cmd_run_on_gluster_pod_or_node(self.node, cmd, gluster_ip)
passed_arbiter_bricks.append(brick["name"])
# Make sure all the arbiter bricks were checked
for brick in bricks_info['arbiter_list']:
self.assertIn(
brick["name"], passed_arbiter_bricks,
"Arbiter brick '%s' was not verified. Looks like it was "
"not found on any of gluster PODs/nodes." % brick["name"])
def test_expand_arbiter_volume_setting_tags_on_nodes_or_devices(
self, node_tags):
"""Validate exapnsion of arbiter volume with defferent tags
This test case is going to run two tests:
1. If value is True it is going to set tags
on nodes and run test
2. If value is False it is going to set tags
on devices and run test
"""
data_nodes = []
arbiter_nodes = []
# set tags arbiter:disabled, arbiter:required
for i, node_id in enumerate(self.node_id_list):
if node_tags:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'node',
node_id, 'disabled' if i < 2 else 'required')
node_info = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id,
json=True)
if not node_tags:
for device in node_info['devices']:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url,
'device', device['id'],
'disabled' if i < 2 else 'required')
device_info = heketi_ops.heketi_device_info(
self.heketi_client_node,
self.heketi_server_url,
device['id'],
json=True)
self.assertEqual(device_info['tags']['arbiter'],
'disabled' if i < 2 else 'required')
node = {
'id': node_id,
'host': node_info['hostnames']['storage'][0]
}
if node_tags:
self.assertEqual(node_info['tags']['arbiter'],
'disabled' if i < 2 else 'required')
data_nodes.append(node) if i < 2 else arbiter_nodes.append(node)
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True,
allow_volume_expansion=True)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc()
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
bricks = self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info)
arbiter_hosts = [obj['host'] for obj in arbiter_nodes]
data_hosts = [obj['host'] for obj in data_nodes]
for brick in bricks['arbiter_list']:
self.assertIn(brick['name'].split(':')[0], arbiter_hosts)
for brick in bricks['data_list']:
self.assertIn(brick['name'].split(':')[0], data_hosts)
# Expand PVC and verify the size
pvc_size = 2
resize_pvc(self.node, self.pvc_name, pvc_size)
verify_pvc_size(self.node, self.pvc_name, pvc_size)
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
bricks = self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info, arbiter_bricks=2, data_bricks=4)
for brick in bricks['arbiter_list']:
self.assertIn(brick['name'].split(':')[0], arbiter_hosts)
for brick in bricks['data_list']:
self.assertIn(brick['name'].split(':')[0], data_hosts)
def test_aribiter_required_tag_on_node_or_devices_other_disabled(
self, node_with_tag):
"""Validate arbiter vol creation with required node or device tag"""
pvc_amount = 3
# Get Heketi nodes info
node_id_list = heketi_ops.heketi_node_list(self.heketi_client_node,
self.heketi_server_url)
# Set arbiter:required tags
arbiter_node = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id_list[0],
json=True)
arbiter_nodes_ip_addresses = arbiter_node['hostnames']['storage']
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node,
self.heketi_server_url,
'node',
node_id_list[0], ('required' if node_with_tag else None),
revert_to=arbiter_node.get('tags', {}).get('arbiter'))
for device in arbiter_node['devices']:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node,
self.heketi_server_url,
'device',
device['id'], (None if node_with_tag else 'required'),
revert_to=device.get('tags', {}).get('arbiter'))
# Set arbiter:disabled tags
data_nodes, data_nodes_ip_addresses = [], []
for node_id in node_id_list[1:]:
node_info = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id,
json=True)
if not any([
int(d['storage']['free']) > (pvc_amount * 1024**2)
for d in node_info['devices']
]):
self.skipTest("Devices are expected to have more than "
"%sGb of free space" % pvc_amount)
data_nodes_ip_addresses.extend(node_info['hostnames']['storage'])
for device in node_info['devices']:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node,
self.heketi_server_url,
'device',
device['id'], (None if node_with_tag else 'disabled'),
revert_to=device.get('tags', {}).get('arbiter'))
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node,
self.heketi_server_url,
'node',
node_id, ('disabled' if node_with_tag else None),
revert_to=node_info.get('tags', {}).get('arbiter'))
data_nodes.append(node_info)
# Create PVCs and check that their bricks are correctly located
self.create_storage_class(is_arbiter_vol=True)
for i in range(pvc_amount):
self.create_and_wait_for_pvc(1)
# Get gluster volume info
vol_info = get_gluster_vol_info_by_pvc_name(
self.node, self.pvc_name)
arbiter_bricks, data_bricks = [], []
for brick in vol_info['bricks']['brick']:
if int(brick["isArbiter"]) == 1:
arbiter_bricks.append(brick["name"])
else:
data_bricks.append(brick["name"])
# Verify that all the arbiter bricks are located on
# arbiter:required node and data bricks on all other nodes only.
for arbiter_brick in arbiter_bricks:
self.assertIn(
arbiter_brick.split(':')[0], arbiter_nodes_ip_addresses)
for data_brick in data_bricks:
self.assertIn(
data_brick.split(':')[0], data_nodes_ip_addresses)
def test_create_arbiter_vol_with_more_than_one_brick_set(self):
"""Validate volume creation using heketi for more than six brick set"""
# Set arbiter:disabled tag to the data devices and get their info
data_nodes = []
for node_id in self.node_id_list[0:2]:
node_info = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id,
json=True)
if len(node_info['devices']) < 2:
self.skipTest("Nodes are expected to have at least 2 devices")
if not all([
int(d['storage']['free']) > (3 * 1024**2)
for d in node_info['devices'][0:2]
]):
self.skipTest(
"Devices are expected to have more than 3Gb of free space")
for device in node_info['devices']:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'device',
device['id'], 'disabled',
device.get('tags', {}).get('arbiter'))
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'node',
node_id, 'disabled',
node_info.get('tags', {}).get('arbiter'))
data_nodes.append(node_info)
# Set arbiter:required tag to all other nodes and their devices
for node_id in self.node_id_list[2:]:
node_info = heketi_ops.heketi_node_info(self.heketi_client_node,
self.heketi_server_url,
node_id,
json=True)
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'node',
node_id, 'required',
node_info.get('tags', {}).get('arbiter'))
for device in node_info['devices']:
self._set_arbiter_tag_with_further_revert(
self.heketi_client_node, self.heketi_server_url, 'device',
device['id'], 'required',
device.get('tags', {}).get('arbiter'))
# Get second big volume between 2 data nodes and use it
# for target vol calculation.
for i, node_info in enumerate(data_nodes):
biggest_disk_free_space = 0
for device in node_info['devices'][0:2]:
free = int(device['storage']['free'])
if free > biggest_disk_free_space:
biggest_disk_free_space = free
data_nodes[i]['biggest_free_space'] = biggest_disk_free_space
target_vol_size_kb = 1 + min(
[n['biggest_free_space'] for n in data_nodes])
# Check that all the data devices have, at least, half of required size
all_big_enough = True
for node_info in data_nodes:
for device in node_info['devices'][0:2]:
if float(device['storage']['free']) < (target_vol_size_kb / 2):
all_big_enough = False
break
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True)
# Create helper arbiter vol if not all the data devices have
# half of required free space.
if not all_big_enough:
helper_vol_size_kb, target_vol_size_kb = 0, 0
smaller_device_id = None
for node_info in data_nodes:
devices = node_info['devices']
if ((devices[0]['storage']['free']) >
(devices[1]['storage']['free'])):
smaller_device_id = devices[1]['id']
smaller_device = devices[1]['storage']['free']
bigger_device = devices[0]['storage']['free']
else:
smaller_device_id = devices[0]['id']
smaller_device = devices[0]['storage']['free']
bigger_device = devices[1]['storage']['free']
diff = bigger_device - (2 * smaller_device) + 1
if diff > helper_vol_size_kb:
helper_vol_size_kb = diff
target_vol_size_kb = bigger_device - diff
# Disable smaller device and create helper vol on bigger one
# to reduce its size, then enable smaller device back.
try:
out = heketi_ops.heketi_device_disable(self.heketi_client_node,
self.heketi_server_url,
smaller_device_id)
self.assertTrue(out)
self.create_and_wait_for_pvc(
int(helper_vol_size_kb / 1024.0**2) + 1)
finally:
out = heketi_ops.heketi_device_enable(self.heketi_client_node,
self.heketi_server_url,
smaller_device_id)
self.assertTrue(out)
# Create target arbiter volume
self.create_and_wait_for_pvc(int(target_vol_size_kb / 1024.0**2))
# Get gluster volume info
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
self.verify_amount_and_proportion_of_arbiter_and_data_bricks(
vol_info, arbiter_bricks=2, data_bricks=4)
def test_arbiter_pvc_mount_on_pod(self):
"""Validate new volume creation using app pod"""
# Create sc with gluster arbiter info
self.create_storage_class(is_arbiter_vol=True)
# Create PVC and wait for it to be in 'Bound' state
self.create_and_wait_for_pvc()
# Create POD with attached volume
mount_path = "/mnt"
pod_name = oc_create_tiny_pod_with_volume(
self.node,
self.pvc_name,
"test-arbiter-pvc-mount-on-app-pod",
mount_path=mount_path)
self.addCleanup(oc_delete, self.node, 'pod', pod_name)
# Wait for POD be up and running
wait_for_pod_be_ready(self.node, pod_name, timeout=60, wait_step=2)
# Get volume ID
vol_info = get_gluster_vol_info_by_pvc_name(self.node, self.pvc_name)
vol_id = vol_info["gluster_vol_id"]
# Verify that POD has volume mounted on it
cmd = "oc exec {0} -- df -PT {1} | grep {1}".format(
pod_name, mount_path)
out = self.cmd_run(cmd)
err_msg = ("Failed to get info about mounted '%s' volume. "
"Output is empty." % vol_id)
self.assertTrue(out, err_msg)
# Verify volume data on POD
# Filesystem Type Size Used Avail Cap Mounted on
# IP:vol_id fuse.glusterfs 1038336 33408 1004928 3% /mnt
data = [s for s in out.strip().split(' ') if s]
actual_vol_id = data[0].split(':')[-1]
self.assertEqual(
vol_id, actual_vol_id, "Volume ID does not match: expected is "
"'%s' and actual is '%s'." % (vol_id, actual_vol_id))
self.assertIn(
"gluster", data[1],
"Filesystem type is expected to be of 'glusterfs' type. "
"Actual value is '%s'." % data[1])
self.assertEqual(
mount_path, data[6],
"Unexpected mount path. Expected is '%s' and actual is '%s'." %
(mount_path, data[6]))
max_size = 1024**2
total_size = int(data[2])
self.assertLessEqual(
total_size, max_size,
"Volume has bigger size '%s' than expected - '%s'." %
(total_size, max_size))
min_available_size = int(max_size * 0.93)
available_size = int(data[4])
self.assertLessEqual(
min_available_size, available_size,
"Minimum available size (%s) not satisfied. Actual is '%s'." %
(min_available_size, available_size))
# Write data on mounted volume
write_data_cmd = ("dd if=/dev/zero of=%s/file$i bs=%s count=1; " %
(mount_path, available_size))
self.cmd_run(write_data_cmd)
