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path: root/tests/functional/provisioning/test_dynamic_provisioning_block.py
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import math
from unittest import skip

from glusto.core import Glusto as g

from openshiftstoragelibs.baseclass import GlusterBlockBaseClass
from openshiftstoragelibs.command import cmd_run
from openshiftstoragelibs.exceptions import ExecutionError
from openshiftstoragelibs.heketi_ops import (
    get_block_hosting_volume_list,
    heketi_blockvolume_create,
    heketi_blockvolume_delete,
    heketi_blockvolume_list,
    heketi_node_info,
    heketi_node_list,
    heketi_volume_create,
    heketi_volume_delete,
    heketi_volume_expand,
    heketi_volume_info,
)
from openshiftstoragelibs.openshift_ops import (
    cmd_run_on_gluster_pod_or_node,
    get_default_block_hosting_volume_size,
    get_gluster_pod_names_by_pvc_name,
    get_pod_name_from_dc,
    get_pv_name_from_pvc,
    oc_create_app_dc_with_io,
    oc_create_pvc,
    oc_delete,
    oc_get_custom_resource,
    oc_get_pods,
    oc_rsh,
    scale_dc_pod_amount_and_wait,
    verify_pvc_status_is_bound,
    wait_for_events,
    wait_for_pod_be_ready,
    wait_for_resource_absence,
)
from openshiftstoragelibs.openshift_version import get_openshift_version
from openshiftstoragelibs.waiter import Waiter


class TestDynamicProvisioningBlockP0(GlusterBlockBaseClass):
    '''
     Class that contain P0 dynamic provisioning test cases
     for block volume
    '''

    def setUp(self):
        super(TestDynamicProvisioningBlockP0, self).setUp()
        self.node = self.ocp_master_node[0]

    def dynamic_provisioning_glusterblock(
            self, set_hacount, create_vol_name_prefix=False):
        datafile_path = '/mnt/fake_file_for_%s' % self.id()

        # Create DC with attached PVC
        sc_name = self.create_storage_class(
            set_hacount=set_hacount,
            create_vol_name_prefix=create_vol_name_prefix)
        pvc_name = self.create_and_wait_for_pvc(
            pvc_name_prefix='autotest-block', sc_name=sc_name)
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        # Check that we can write data
        for cmd in ("dd if=/dev/urandom of=%s bs=1K count=100",
                    "ls -lrt %s",
                    "rm -rf %s"):
            cmd = cmd % datafile_path
            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_dynamic_provisioning_glusterblock_hacount_true(self):
        """Validate dynamic provisioning for glusterblock
        """
        self.dynamic_provisioning_glusterblock(set_hacount=True)

    def test_dynamic_provisioning_glusterblock_hacount_false(self):
        """Validate storage-class mandatory parameters for block
        """
        self.dynamic_provisioning_glusterblock(set_hacount=False)

    def test_dynamic_provisioning_glusterblock_heketipod_failure(self):
        """Validate PVC with glusterblock creation when heketi pod is down"""
        datafile_path = '/mnt/fake_file_for_%s' % self.id()

        # Create DC with attached PVC
        sc_name = self.create_storage_class()
        app_1_pvc_name = self.create_and_wait_for_pvc(
            pvc_name_prefix='autotest-block', sc_name=sc_name)
        app_1_dc_name, app_1_pod_name = self.create_dc_with_pvc(app_1_pvc_name)

        # Write test data
        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)

        # Create second PVC
        app_2_pvc_name = oc_create_pvc(
            self.node, pvc_name_prefix='autotest-block2', 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
        )

        # Create second app POD
        app_2_dc_name = oc_create_app_dc_with_io(self.node, app_2_pvc_name)
        self.addCleanup(oc_delete, self.node, 'dc', app_2_dc_name)
        self.addCleanup(
            scale_dc_pod_amount_and_wait, self.node, app_2_dc_name, 0)
        app_2_pod_name = get_pod_name_from_dc(self.node, app_2_dc_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=150, wait_step=3)

        # 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 test_dynamic_provisioning_glusterblock_glusterpod_failure(self):
        """Create glusterblock PVC when gluster pod is down."""

        # Check that we work with containerized Gluster
        if not self.is_containerized_gluster():
            self.skipTest("Only containerized Gluster clusters are supported.")

        datafile_path = '/mnt/fake_file_for_%s' % self.id()

        # Create DC with attached PVC
        sc_name = self.create_storage_class()
        pvc_name = self.create_and_wait_for_pvc(
            pvc_name_prefix='autotest-block', sc_name=sc_name)
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        # Run IO in background
        io_cmd = "oc rsh %s dd if=/dev/urandom of=%s bs=1000K count=900" % (
            pod_name, datafile_path)
        async_io = g.run_async(self.node, io_cmd, "root")

        # Pick up one of the hosts which stores PV brick (4+ nodes case)
        gluster_pod_data = get_gluster_pod_names_by_pvc_name(
            self.node, pvc_name)[0]

        # Delete glusterfs POD from chosen host and wait for spawn of new one
        oc_delete(self.node, 'pod', gluster_pod_data["pod_name"])
        cmd = ("oc get pods -o wide | grep glusterfs | grep %s | "
               "grep -v Terminating | awk '{print $1}'") % (
                   gluster_pod_data["pod_hostname"])
        for w in Waiter(600, 15):
            out = self.cmd_run(cmd)
            new_gluster_pod_name = out.strip().split("\n")[0].strip()
            if not new_gluster_pod_name:
                continue
            else:
                break
        if w.expired:
            error_msg = "exceeded timeout, new gluster pod not created"
            g.log.error(error_msg)
            raise ExecutionError(error_msg)
        new_gluster_pod_name = out.strip().split("\n")[0].strip()
        g.log.info("new gluster pod name is %s" % new_gluster_pod_name)
        wait_for_pod_be_ready(self.node, new_gluster_pod_name)

        # Check that async IO was not interrupted
        ret, out, err = async_io.async_communicate()
        self.assertEqual(ret, 0, "IO %s failed on %s" % (io_cmd, self.node))

    def test_glusterblock_logs_presence_verification(self):
        """Validate presence of glusterblock provisioner POD and it's status"""

        # Get glusterblock provisioner dc name
        cmd = ("oc get dc | awk '{ print $1 }' | "
               "grep -e glusterblock -e provisioner")
        dc_name = cmd_run(cmd, self.ocp_master_node[0], True)

        # Get glusterblock provisioner pod name and it's status
        gb_prov_name, gb_prov_status = oc_get_custom_resource(
            self.node, 'pod', custom=':.metadata.name,:.status.phase',
            selector='deploymentconfig=%s' % dc_name)[0]
        self.assertEqual(gb_prov_status, 'Running')

        # Create Secret, SC and PVC
        self.create_storage_class()
        self.create_and_wait_for_pvc()

        # Get list of Gluster nodes
        g_hosts = list(g.config.get("gluster_servers", {}).keys())
        self.assertGreater(
            len(g_hosts), 0,
            "We expect, at least, one Gluster Node/POD:\n %s" % g_hosts)

        # Perform checks on Gluster nodes/PODs
        logs = ("gluster-block-configshell", "gluster-blockd")

        gluster_pods = oc_get_pods(
            self.ocp_client[0], selector="glusterfs-node=pod")
        if gluster_pods:
            cmd = "tail -n 5 /var/log/glusterfs/gluster-block/%s.log"
        else:
            cmd = "tail -n 5 /var/log/gluster-block/%s.log"
        for g_host in g_hosts:
            for log in logs:
                out = cmd_run_on_gluster_pod_or_node(
                    self.ocp_client[0], cmd % log, gluster_node=g_host)
                self.assertTrue(out, "Command '%s' output is empty." % cmd)

    def test_dynamic_provisioning_glusterblock_heketidown_pvc_delete(self):
        """Validate PVC deletion when heketi is down"""

        # Create Secret, SC and PVCs
        self.create_storage_class()
        self.pvc_name_list = self.create_and_wait_for_pvcs(
            1, 'pvc-heketi-down', 3)

        # remove heketi-pod
        scale_dc_pod_amount_and_wait(self.ocp_client[0],
                                     self.heketi_dc_name,
                                     0,
                                     self.storage_project_name)
        try:
            # delete pvc
            for pvc in self.pvc_name_list:
                oc_delete(self.ocp_client[0], 'pvc', pvc)
            for pvc in self.pvc_name_list:
                with self.assertRaises(ExecutionError):
                    wait_for_resource_absence(
                        self.ocp_client[0], 'pvc', pvc, interval=3, timeout=30)
        finally:
            # bring back heketi-pod
            scale_dc_pod_amount_and_wait(self.ocp_client[0],
                                         self.heketi_dc_name,
                                         1,
                                         self.storage_project_name)

        # verify PVC's are deleted
        for pvc in self.pvc_name_list:
            wait_for_resource_absence(self.ocp_client[0], 'pvc',
                                      pvc,
                                      interval=1, timeout=120)

        # create a new PVC
        self.create_and_wait_for_pvc()

    def test_recreate_app_pod_with_attached_block_pv(self):
        """Validate app pod attached block device I/O after restart"""
        datafile_path = '/mnt/temporary_test_file'

        # Create DC with POD and attached PVC to it
        sc_name = self.create_storage_class()
        pvc_name = self.create_and_wait_for_pvc(
            pvc_name_prefix='autotest-block', sc_name=sc_name)
        dc_name, pod_name = self.create_dc_with_pvc(pvc_name)

        # Write data
        write_cmd = "oc exec %s -- dd if=/dev/urandom of=%s bs=4k count=10000"
        self.cmd_run(write_cmd % (pod_name, datafile_path))

        # Recreate app POD
        scale_dc_pod_amount_and_wait(self.node, dc_name, 0)
        scale_dc_pod_amount_and_wait(self.node, dc_name, 1)
        new_pod_name = get_pod_name_from_dc(self.node, dc_name)

        # Check presence of already written file
        check_existing_file_cmd = (
            "oc exec %s -- ls %s" % (new_pod_name, datafile_path))
        out = self.cmd_run(check_existing_file_cmd)
        self.assertIn(datafile_path, out)

        # Perform I/O on the new POD
        self.cmd_run(write_cmd % (new_pod_name, datafile_path))

    def test_volname_prefix_glusterblock(self):
        """Validate custom volname prefix blockvol"""

        self.dynamic_provisioning_glusterblock(
            set_hacount=False, create_vol_name_prefix=True)

        pv_name = get_pv_name_from_pvc(self.node, self.pvc_name)
        vol_name = oc_get_custom_resource(
            self.node, 'pv',
            ':.metadata.annotations.glusterBlockShare', pv_name)[0]

        block_vol_list = heketi_blockvolume_list(
            self.heketi_client_node, self.heketi_server_url)

        self.assertIn(vol_name, block_vol_list)

        self.assertTrue(vol_name.startswith(
            self.sc.get('volumenameprefix', 'autotest')))

    def test_dynamic_provisioning_glusterblock_reclaim_policy_retain(self):
        """Validate retain policy for gluster-block after PVC deletion"""

        if get_openshift_version() < "3.9":
            self.skipTest(
                "'Reclaim' feature is not supported in OCP older than 3.9")

        self.create_storage_class(reclaim_policy='Retain')
        self.create_and_wait_for_pvc()

        dc_name = oc_create_app_dc_with_io(self.node, self.pvc_name)

        try:
            pod_name = get_pod_name_from_dc(self.node, dc_name)
            wait_for_pod_be_ready(self.node, pod_name)
        finally:
            scale_dc_pod_amount_and_wait(self.node, dc_name, pod_amount=0)
            oc_delete(self.node, 'dc', dc_name)

        # get the name of volume
        pv_name = get_pv_name_from_pvc(self.node, self.pvc_name)

        custom = [r':.metadata.annotations."gluster\.org\/volume\-id"',
                  r':.spec.persistentVolumeReclaimPolicy']
        vol_id, reclaim_policy = oc_get_custom_resource(
            self.node, 'pv', custom, pv_name)

        # checking the retainPolicy of pvc
        self.assertEqual(reclaim_policy, 'Retain')

        # delete the pvc
        oc_delete(self.node, 'pvc', self.pvc_name)

        # check if pv is also deleted or not
        with self.assertRaises(ExecutionError):
            wait_for_resource_absence(
                self.node, 'pvc', self.pvc_name, interval=3, timeout=30)

        # getting the blockvol list
        blocklist = heketi_blockvolume_list(self.heketi_client_node,
                                            self.heketi_server_url)
        self.assertIn(vol_id, blocklist)

        heketi_blockvolume_delete(self.heketi_client_node,
                                  self.heketi_server_url, vol_id)
        blocklist = heketi_blockvolume_list(self.heketi_client_node,
                                            self.heketi_server_url)
        self.assertNotIn(vol_id, blocklist)
        oc_delete(self.node, 'pv', pv_name)
        wait_for_resource_absence(self.node, 'pv', pv_name)

    def verify_free_space(self, free_space):
        # verify free space on nodes otherwise skip test case
        node_list = heketi_node_list(
            self.heketi_client_node, self.heketi_server_url)
        self.assertTrue(node_list)

        free_nodes = 0
        for node in node_list:
            node_info = heketi_node_info(
                self.heketi_client_node, self.heketi_server_url, node,
                json=True)

            if node_info['state'] != 'online':
                continue

            free_size = 0
            self.assertTrue(node_info['devices'])

            for device in node_info['devices']:
                if device['state'] != 'online':
                    continue
                # convert size kb into gb
                device_f_size = device['storage']['free'] / 1048576
                free_size += device_f_size

                if free_size > free_space:
                    free_nodes += 1
                    break

            if free_nodes >= 3:
                break

        if free_nodes < 3:
            self.skipTest("skip test case because required free space is "
                          "not available for creating BHV of size %s /n"
                          "only %s free space is available"
                          % (free_space, free_size))

    @skip("Blocked by BZ-1714292")
    def test_creation_of_block_vol_greater_than_the_default_size_of_BHV_neg(
            self):
        """Verify that block volume creation fails when we create block
        volume of size greater than the default size of BHV.
        Verify that block volume creation succeed when we create BHV
        of size greater than the default size of BHV.
        """

        default_bhv_size = get_default_block_hosting_volume_size(
            self.node, self.heketi_dc_name)
        reserve_size = default_bhv_size * 0.02
        reserve_size = int(math.ceil(reserve_size))

        self.verify_free_space(default_bhv_size + reserve_size + 2)

        with self.assertRaises(ExecutionError):
            # create a block vol greater than default BHV size
            bvol_info = heketi_blockvolume_create(
                self.heketi_client_node, self.heketi_server_url,
                (default_bhv_size + 1), json=True)
            self.addCleanup(
                heketi_blockvolume_delete, self.heketi_client_node,
                self.heketi_server_url, bvol_info['id'])

        sc_name = self.create_storage_class()

        # create a block pvc greater than default BHV size
        pvc_name = oc_create_pvc(
            self.node, sc_name, pvc_size=(default_bhv_size + 1))
        self.addCleanup(
            wait_for_resource_absence, self.node, 'pvc', pvc_name)
        self.addCleanup(
            oc_delete, self.node, 'pvc', pvc_name, raise_on_absence=False)

        wait_for_events(
            self.node, pvc_name, obj_type='PersistentVolumeClaim',
            event_type='Warning', event_reason='ProvisioningFailed')

        # create block hosting volume greater than default BHV size
        vol_info = heketi_volume_create(
            self.heketi_client_node, self.heketi_server_url,
            (default_bhv_size + reserve_size + 2), block=True,
            json=True)
        self.addCleanup(
            heketi_volume_delete, self.heketi_client_node,
            self.heketi_server_url, vol_info['id'])

        # Cleanup PVC before block hosting volume to avoid failures
        self.addCleanup(
            wait_for_resource_absence, self.node, 'pvc', pvc_name)
        self.addCleanup(
            oc_delete, self.node, 'pvc', pvc_name, raise_on_absence=False)

        verify_pvc_status_is_bound(self.node, pvc_name)

    @skip("Blocked by BZ-1714292")
    def test_creation_of_block_vol_greater_than_the_default_size_of_BHV_pos(
            self):
        """Verify that block volume creation succeed when we create BHV
        of size greater than the default size of BHV.
        """

        default_bhv_size = get_default_block_hosting_volume_size(
            self.node, self.heketi_dc_name)
        reserve_size = default_bhv_size * 0.02
        reserve_size = int(math.ceil(reserve_size))

        self.verify_free_space(default_bhv_size + reserve_size + 2)

        # create block hosting volume greater than default BHV size
        vol_info = heketi_volume_create(
            self.heketi_client_node, self.heketi_server_url,
            (default_bhv_size + reserve_size + 2), block=True,
            json=True)
        self.addCleanup(
            heketi_volume_delete, self.heketi_client_node,
            self.heketi_server_url, vol_info['id'])

        # create a block pvc greater than default BHV size
        self.create_and_wait_for_pvc(pvc_size=(default_bhv_size + 1))

    @skip("Blocked by BZ-1714292")
    def test_expansion_of_block_hosting_volume_using_heketi(self):
        """Verify that after expanding block hosting volume we are able to
        consume the expanded space"""

        h_node = self.heketi_client_node
        h_url = self.heketi_server_url
        bvols_in_bhv = set([])
        bvols_pv = set([])

        BHVS = get_block_hosting_volume_list(h_node, h_url)

        free_BHVS_count = 0
        for vol in BHVS.keys():
            info = heketi_volume_info(h_node, h_url, vol, json=True)
            if info['blockinfo']['freesize'] > 0:
                free_BHVS_count += 1
            if free_BHVS_count > 1:
                self.skipTest("Skip test case because there is more than one"
                              " Block Hosting Volume with free space")

        # create block volume of 1gb
        bvol_info = heketi_blockvolume_create(h_node, h_url, 1, json=True)

        expand_size = 20
        try:
            self.verify_free_space(expand_size)
            bhv = bvol_info['blockhostingvolume']
            vol_info = heketi_volume_info(h_node, h_url, bhv, json=True)
            bvols_in_bhv.update(vol_info['blockinfo']['blockvolume'])
        finally:
            # cleanup BHV if there is only one block volume inside it
            if len(bvols_in_bhv) == 1:
                self.addCleanup(
                    heketi_volume_delete, h_node, h_url, bhv, json=True)
            self.addCleanup(
                heketi_blockvolume_delete, h_node, h_url, bvol_info['id'])

        size = vol_info['size']
        free_size = vol_info['blockinfo']['freesize']
        bvol_count = int(free_size / expand_size)
        bricks = vol_info['bricks']

        # create pvs to fill the BHV
        pvcs = self.create_and_wait_for_pvcs(
            pvc_size=(expand_size if bvol_count else free_size),
            pvc_amount=(bvol_count or 1), timeout=300)

        vol_expand = True

        for i in range(2):
            # get the vol ids from pvcs
            for pvc in pvcs:
                pv = get_pv_name_from_pvc(self.node, pvc)
                custom = r':.metadata.annotations."gluster\.org\/volume-id"'
                bvol_id = oc_get_custom_resource(self.node, 'pv', custom, pv)
                bvols_pv.add(bvol_id[0])

            vol_info = heketi_volume_info(h_node, h_url, bhv, json=True)
            bvols = vol_info['blockinfo']['blockvolume']
            bvols_in_bhv.update(bvols)
            self.assertEqual(bvols_pv, (bvols_in_bhv & bvols_pv))

            # Expand BHV and verify bricks and size of BHV
            if vol_expand:
                vol_expand = False
                heketi_volume_expand(
                    h_node, h_url, bhv, expand_size, json=True)
                vol_info = heketi_volume_info(h_node, h_url, bhv, json=True)

                self.assertEqual(size + expand_size, vol_info['size'])
                self.assertFalse(len(vol_info['bricks']) % 3)
                self.assertLess(len(bricks), len(vol_info['bricks']))

                # create more PVCs in expanded BHV
                pvcs = self.create_and_wait_for_pvcs(
                    pvc_size=(expand_size - 1), pvc_amount=1)