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(ExecutionError):
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))
def _check_fstab_and_df_entries(self, first_cmd, second_cmd):
# matches output of "df --out=target" and entries in fstab
# and vice-versa as per commands given in first_cmd and
# second_cmd
err_msg = "failed to execute command: %s with error: %s"
ret, out, err = oc_rsh(self.oc_node, self.gluster_pod_name, first_cmd)
self.assertEqual(ret, 0, err_msg % (first_cmd, err))
for mnt_path in (out.strip()).split("\n"):
ret, out, err = oc_rsh(self.oc_node, self.gluster_pod_name,
second_cmd % mnt_path)
self.assertEqual(ret, 0, err_msg % (second_cmd, err))
def test_storage_class_mandatory_params_glusterfile(self):
"""Validate storage-class creation with mandatory parameters"""
# create secret
self.secret_name = oc_create_secret(
self.node,
namespace=self.sc.get('secretnamespace', 'default'),
data_key=self.heketi_cli_key,
secret_type=self.sc.get('provisioner', 'kubernetes.io/glusterfs'))
self.addCleanup(
oc_delete, self.node, 'secret', self.secret_name)
# create storage class with mandatory parameters only
sc_name = oc_create_sc(
self.node, provisioner='kubernetes.io/glusterfs',
resturl=self.sc['resturl'], restuser=self.sc['restuser'],
secretnamespace=self.sc['secretnamespace'],
secretname=self.secret_name
)
self.addCleanup(oc_delete, self.node, 'sc', sc_name)
# Create PVC
pvc_name = self.create_and_wait_for_pvc(sc_name=sc_name)
# 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)
# Make sure we are able to work with files on the mounted volume
filepath = "/mnt/file_for_testing_sc.log"
cmd = "dd if=/dev/urandom of=%s bs=1K count=100" % filepath
ret, out, err = oc_rsh(self.node, pod_name, cmd)
self.assertEqual(
ret, 0, "Failed to execute command %s on %s" % (cmd, self.node))
cmd = "ls -lrt %s" % filepath
ret, out, err = oc_rsh(self.node, pod_name, cmd)
self.assertEqual(
ret, 0, "Failed to execute command %s on %s" % (cmd, self.node))
cmd = "rm -rf %s" % filepath
ret, out, err = oc_rsh(self.node, pod_name, cmd)
self.assertEqual(
ret, 0, "Failed to execute command %s on %s" % (cmd, self.node))
def test_pv_resize_with_prefix_for_name(self,
create_vol_name_prefix=False):
"""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))
cmd = ("dd if=/dev/urandom of=%sfile2 "
"bs=100K count=10000") % dir_path
ret, out, err = oc_rsh(node, pod_name, cmd)
self.assertNotEqual(
ret, 0, " This IO did not fail as expected "
"command %s on %s" % (cmd, node))
pvc_size = 2
resize_pvc(node, pvc_name, pvc_size)
verify_pvc_size(node, pvc_name, pvc_size)
pv_name = get_pv_name_from_pvc(node, pvc_name)
verify_pv_size(node, pv_name, pvc_size)
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 dynamic_provisioning_glusterfile(self, create_vol_name_prefix):
# Create secret and storage class
self.create_storage_class(
create_vol_name_prefix=create_vol_name_prefix)
# Create PVC
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(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)
# Verify Heketi volume name for prefix presence if provided
if create_vol_name_prefix:
ret = verify_volume_name_prefix(self.node,
self.sc['volumenameprefix'],
self.sc['secretnamespace'],
pvc_name, self.sc['resturl'])
self.assertTrue(ret, "verify volnameprefix failed")
# Make sure we are able to work with files on the mounted volume
filepath = "/mnt/file_for_testing_io.log"
for cmd in ("dd if=/dev/urandom of=%s bs=1K count=100",
"ls -lrt %s",
"rm -rf %s"):
cmd = cmd % filepath
ret, out, err = oc_rsh(self.node, pod_name, cmd)
self.assertEqual(
ret, 0,
"Failed to execute '%s' command on %s" % (cmd, self.node))
def test_pvc_deletion_while_pod_is_running(self):
"""Validate PVC deletion while pod is running"""
# Create DC with POD and attached PVC to it
sc_name = self.create_storage_class()
pvc_name = self.create_and_wait_for_pvc(sc_name=sc_name)
dc_name, pod_name = self.create_dc_with_pvc(pvc_name)
# Delete PVC
oc_delete(self.node, 'pvc', self.pvc_name)
with self.assertRaises(ExecutionError):
wait_for_resource_absence(self.node,
'pvc',
self.pvc_name,
interval=3,
timeout=30)
# Make sure we are able to work with files on the mounted volume
# after deleting pvc.
filepath = "/mnt/file_for_testing_volume.log"
cmd = "dd if=/dev/urandom of=%s bs=1K count=100" % filepath
ret, out, err = oc_rsh(self.node, pod_name, cmd)
self.assertEqual(
ret, 0, "Failed to execute command %s on %s" % (cmd, self.node))
def _create_volumes_with_io(self, pvc_cnt, timeout=120, wait_step=3):
pvc_names = self.create_and_wait_for_pvcs(pvc_amount=pvc_cnt,
sc_name=self.sc_name,
timeout=timeout,
wait_step=wait_step)
err_msg = "failed to execute command %s on pod %s with error: %s"
for pvc_name in pvc_names:
dc_name, pod_name = self.create_dc_with_pvc(pvc_name)
# Make sure we are able to work with files
# on the mounted volume
filepath = "/mnt/file_for_testing_io.log"
cmd = "dd if=/dev/urandom of=%s bs=1K count=100" % filepath
ret, out, err = oc_rsh(self.oc_node, pod_name, cmd)
self.assertEqual(ret, 0, err_msg % (cmd, pod_name, err))
cmd = "ls -lrt %s" % filepath
ret, out, err = oc_rsh(self.oc_node, pod_name, cmd)
self.assertEqual(ret, 0, err_msg % (cmd, pod_name, err))
return pvc_names
def get_io_time(self):
"""Gets last io time of io pod by listing log file directory
/mnt on pod
"""
ret, stdout, stderr = oc_rsh(self.oc_node, self.pod_name,
"ls -l /mnt/ | awk '{print $8}'")
if ret != 0:
err_msg = "failed to get io time for pod %s" % self.pod_name
g.log.error(err_msg)
raise AssertionError(err_msg)
get_time = None
try:
get_time = datetime.strptime(stdout.strip(), "%H:%M")
except Exception:
g.log.error("invalid time format ret %s, stout: %s, "
"stderr: %s" % (ret, stdout, stderr))
raise
return get_time
def restart_brick_process(hostname, gluster_pod, block_hosting_vol):
"""restarts brick process of block hosting volumes
Args:
hostname (str): hostname on which gluster pod exists
gluster_pod (podcmd | str): gluster pod class object has gluster
pod and ocp master node or gluster
pod name
block_hosting_vol (str): block hosting volume name
"""
pids = get_brick_pids(gluster_pod, block_hosting_vol, hostname)
# using count variable to limit the max pod process kill to 2
count = 0
killed_process = {}
pid_keys = pids.keys()
oc_pods = oc_get_pods(hostname)
for pod in oc_pods.keys():
if not (oc_pods[pod]["ip"] in pid_keys and count <= 1):
continue
ret, out, err = oc_rsh(hostname, pod,
"kill -9 %s" % pids[oc_pods[pod]["ip"]])
if ret != 0:
err_msg = "failed to kill process id %s error: %s" % (
pids[oc_pods[pod]["ip"]], err)
g.log.error(err_msg)
raise AssertionError(err_msg)
killed_process[pod] = pids[oc_pods[pod]["ip"]]
count += 1
for pod, pid in killed_process.items():
wait_for_process_to_kill_on_pod(pod, pid, hostname)
ret, out, err = volume_start(gluster_pod, block_hosting_vol, force=True)
if ret != 0:
err_msg = "failed to start gluster volume %s on pod %s error: %s" % (
block_hosting_vol, gluster_pod, err)
g.log.error(err_msg)
raise AssertionError(err_msg)
def test_dynamic_provisioning_glusterfile_heketipod_failure(self):
"""Validate dynamic provisioning for gluster file when heketi pod down
"""
mount_path = "/mnt"
datafile_path = '%s/fake_file_for_%s' % (mount_path, self.id())
# Create secret and storage class
sc_name = self.create_storage_class()
# Create PVC
app_1_pvc_name = self.create_and_wait_for_pvc(
pvc_name_prefix="autotest-file", sc_name=sc_name
)
# Create app POD with attached volume
app_1_pod_name = oc_create_tiny_pod_with_volume(
self.node, app_1_pvc_name, "test-pvc-mount-on-app-pod",
mount_path=mount_path)
self.addCleanup(
wait_for_resource_absence, self.node, 'pod', app_1_pod_name)
self.addCleanup(oc_delete, self.node, 'pod', app_1_pod_name)
# Wait for app POD be up and running
wait_for_pod_be_ready(
self.node, app_1_pod_name, timeout=60, wait_step=2)
# Write data to the app POD
write_data_cmd = (
"dd if=/dev/urandom of=%s bs=1K count=100" % datafile_path)
ret, out, err = oc_rsh(self.node, app_1_pod_name, write_data_cmd)
self.assertEqual(
ret, 0,
"Failed to execute command %s on %s" % (write_data_cmd, self.node))
# Remove Heketi pod
heketi_down_cmd = "oc scale --replicas=0 dc/%s --namespace %s" % (
self.heketi_dc_name, self.storage_project_name)
heketi_up_cmd = "oc scale --replicas=1 dc/%s --namespace %s" % (
self.heketi_dc_name, self.storage_project_name)
self.addCleanup(self.cmd_run, heketi_up_cmd)
heketi_pod_name = get_pod_name_from_dc(
self.node, self.heketi_dc_name, timeout=10, wait_step=3)
self.cmd_run(heketi_down_cmd)
wait_for_resource_absence(self.node, 'pod', heketi_pod_name)
app_2_pvc_name = oc_create_pvc(
self.node, pvc_name_prefix="autotest-file2", sc_name=sc_name
)
self.addCleanup(
wait_for_resource_absence, self.node, 'pvc', app_2_pvc_name)
self.addCleanup(
oc_delete, self.node, 'pvc', app_2_pvc_name, raise_on_absence=False
)
# Create second app POD
app_2_pod_name = oc_create_tiny_pod_with_volume(
self.node, app_2_pvc_name, "test-pvc-mount-on-app-pod",
mount_path=mount_path)
self.addCleanup(
wait_for_resource_absence, self.node, 'pod', app_2_pod_name)
self.addCleanup(oc_delete, self.node, 'pod', app_2_pod_name)
# Bring Heketi POD back
self.cmd_run(heketi_up_cmd)
# Wait for Heketi POD be up and running
new_heketi_pod_name = get_pod_name_from_dc(
self.node, self.heketi_dc_name, timeout=10, wait_step=2)
wait_for_pod_be_ready(
self.node, new_heketi_pod_name, wait_step=5, timeout=120)
# Wait for second PVC and app POD be ready
verify_pvc_status_is_bound(self.node, app_2_pvc_name)
wait_for_pod_be_ready(
self.node, app_2_pod_name, timeout=60, wait_step=2)
# Verify that we are able to write data
ret, out, err = oc_rsh(self.node, app_2_pod_name, write_data_cmd)
self.assertEqual(
ret, 0,
"Failed to execute command %s on %s" % (write_data_cmd, self.node))
def _pv_resize(self, exceed_free_space):
dir_path = "/mnt"
pvc_size_gb, min_free_space_gb = 1, 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))
# 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")
