Snapshot: Create clone and check for self heal

Create a clone and check for self heal operation on
the cloned volume.

Change-Id: Icf61f996fcd503a6c0d0bf936900858b715a4742
Signed-off-by: srivickynesh <sselvan@redhat.com>

1 files changed, 295 insertions, 0 deletions

diff --git a/tests/functional/snapshot/test_snap_self_heal.py b/tests/functional/snapshot/test_snap_self_heal.py
new file mode 100644
index 000000000..10f8a531a
--- /dev/null
+++ b/tests/functional/snapshot/test_snap_self_heal.py
@@ -0,0 +1,295 @@
+#  Copyright (C) 2017-2018  Red Hat, Inc. <http://www.redhat.com>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with this program; if not, write to the Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+Description:
+
+Test Cases in this module tests the
+Creation of clone from snapshot of volume.
+
+"""
+from glusto.core import Glusto as g
+from glustolibs.gluster.exceptions import ExecutionError
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
+from glustolibs.gluster.mount_ops import (mount_volume, umount_volume,
+                                          is_mounted)
+from glustolibs.gluster.volume_ops import volume_start
+from glustolibs.gluster.brick_libs import (
+    get_all_bricks, are_bricks_online, bring_bricks_offline,
+    select_bricks_to_bring_offline,
+    get_offline_bricks_list, get_online_bricks_list, bring_bricks_online)
+from glustolibs.gluster.heal_libs import monitor_heal_completion
+from glustolibs.gluster.volume_libs import (
+    cleanup_volume,
+    get_subvols,
+    verify_all_process_of_volume_are_online,
+    wait_for_volume_process_to_be_online)
+from glustolibs.gluster.snap_ops import (snap_create,
+                                         snap_list,
+                                         snap_activate,
+                                         snap_clone)
+from glustolibs.misc.misc_libs import upload_scripts
+
+
+@runs_on([['distributed-replicated'],
+          ['glusterfs']])
+class SnapshotSelfheal(GlusterBaseClass):
+
+    @classmethod
+    def setUpClass(cls):
+        GlusterBaseClass.setUpClass.im_func(cls)
+        cls.snap = "snap1"
+        cls.clone = "clone1"
+        cls.mount1 = "/mnt/clone1"
+
+    def setUp(self):
+
+        # Uploading file_dir script in all client direcotries
+        g.log.info("Upload io scripts to clients %s for running IO on "
+                   "mounts", self.clients[0])
+        script_local_path = ("/usr/share/glustolibs/io/scripts/"
+                             "file_dir_ops.py")
+        self.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
+                                   "file_dir_ops.py")
+        ret = upload_scripts(self.clients[0], script_local_path)
+        if not ret:
+            raise ExecutionError("Failed to upload IO scripts to clients %s" %
+                                 self.clients[0])
+        g.log.info("Successfully uploaded IO scripts to clients %s",
+                   self.clients[0])
+
+        # SettingUp volume and Mounting the volume
+        GlusterBaseClass.setUp.im_func(self)
+        g.log.info("Starting to SetUp Volume")
+        ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
+        if not ret:
+            raise ExecutionError("Failed to setup volume %s" % self.volname)
+        g.log.info("Volume %s has been setup successfully", self.volname)
+
+    def test_snap_self_heal(self):
+        """
+        Steps:
+
+        1. create a volume
+        2. mount volume
+        3. create snapshot of that volume
+        4. Activate snapshot
+        5. Clone snapshot and Mount
+        6. Perform I/O
+        7. Bring Down Few bricks from volume without
+           affecting the volume or cluster.
+        8. Perform I/O
+        9. Bring back down bricks to online
+        10. Validate heal is complete with areequal
+
+        """
+        # pylint: disable=too-many-statements, too-many-locals
+        # Creating snapshot:
+        g.log.info("Starting to Create snapshot")
+        ret, _, _ = snap_create(self.mnode, self.volname, self.snap)
+        self.assertEqual(ret, 0, ("Failed to create snapshot for volume %s"
+                                  % self.volname))
+        g.log.info("Snapshot %s created successfully for volume %s", self.snap,
+                   self.volname)
+
+        # Activating snapshot
+        g.log.info("Starting to Activate Snapshot")
+        ret, _, _ = snap_activate(self.mnode, self.snap)
+        self.assertEqual(ret, 0, ("Failed to Activate snapshot %s"
+                                  % self.snap))
+        g.log.info("Snapshot %s activated successfully", self.snap)
+
+        # snapshot list
+        ret, _, _ = snap_list(self.mnode)
+        self.assertEqual(ret, 0, ("Failed to list all the snapshot"))
+        g.log.info("Snapshot list command was successful")
+
+        # Creating a Clone volume from snapshot:
+        g.log.info("Starting to Clone volume from Snapshot")
+        ret, _, _ = snap_clone(self.mnode, self.snap, self.clone)
+        self.assertEqual(ret, 0, ("Failed to clone %s from snapshot %s"
+                                  % (self.clone, self.snap)))
+        g.log.info("%s created successfully", self.clone)
+
+        #  start clone volumes
+        g.log.info("start to created clone volumes")
+        ret, _, _ = volume_start(self.mnode, self.clone)
+        self.assertEqual(ret, 0, "Failed to start clone %s" % self.clone)
+        g.log.info("clone volume %s started successfully", self.clone)
+
+        # Mounting a clone volume
+        g.log.info("Mounting a clone volume")
+        ret, _, _ = mount_volume(self.clone, self.mount_type, self.mount1,
+                                 self.mnode, self.clients[0])
+        self.assertEqual(ret, 0, "Failed to mount clone Volume %s"
+                         % self.clone)
+        g.log.info("Clone volume %s mounted Successfully", self.clone)
+
+        # Checking cloned volume mounted or not
+        ret = is_mounted(self.clone, self.mount1, self.mnode,
+                         self.clients[0], self.mount_type)
+        self.assertTrue(ret, "Failed to mount clone volume on mount point: %s"
+                        % self.mount1)
+        g.log.info("clone Volume %s mounted on %s", self.clone, self.mount1)
+
+        # write files on all mounts
+        g.log.info("Starting IO on all mounts...")
+        g.log.info("mounts: %s", self.mount1)
+        all_mounts_procs = []
+        cmd = ("python %s create_files "
+               "-f 10 --base-file-name file %s"
+               % (self.script_upload_path, self.mount1))
+        proc = g.run(self.clients[0], cmd)
+        all_mounts_procs.append(proc)
+        g.log.info("Successful in creating I/O on mounts")
+
+        # get the bricks from the volume
+        g.log.info("Fetching bricks for the volume : %s", self.clone)
+        bricks_list = get_all_bricks(self.mnode, self.clone)
+        g.log.info("Brick List : %s", bricks_list)
+
+        # Select bricks to bring offline
+        g.log.info("Starting to bring bricks to offline")
+        bricks_to_bring_offline_dict = (select_bricks_to_bring_offline(
+            self.mnode, self.volname))
+        bricks_to_bring_offline = filter(None, (
+            bricks_to_bring_offline_dict['hot_tier_bricks'] +
+            bricks_to_bring_offline_dict['cold_tier_bricks'] +
+            bricks_to_bring_offline_dict['volume_bricks']))
+        g.log.info("Brick to bring offline: %s ", bricks_to_bring_offline)
+        ret = bring_bricks_offline(self.clone, bricks_to_bring_offline)
+        self.assertTrue(ret, "Failed to bring the bricks offline")
+        g.log.info("Successful in bringing bricks: %s offline",
+                   bricks_to_bring_offline)
+
+        # Offline Bricks list
+        offline_bricks = get_offline_bricks_list(self.mnode, self.clone)
+        self.assertIsNotNone(offline_bricks, "Failed to get offline bricklist"
+                             "for volume %s" % self.clone)
+        for bricks in offline_bricks:
+            self.assertIn(bricks, bricks_to_bring_offline,
+                          "Failed to validate "
+                          "Bricks offline")
+        g.log.info("Bricks Offline: %s", offline_bricks)
+
+        # Online Bricks list
+        online_bricks = get_online_bricks_list(self.mnode, self.clone)
+        self.assertIsNotNone(online_bricks, "Failed to get online bricks"
+                             " for volume %s" % self.clone)
+        g.log.info("Bricks Online: %s", online_bricks)
+
+        # write files mountpoint
+        g.log.info("Starting IO on all mounts...")
+        g.log.info("mounts: %s", self.mount1)
+        all_mounts_procs = []
+        cmd = ("python %s create_files "
+               "-f 10 --base-file-name file %s" % (self.script_upload_path,
+                                                   self.mount1))
+        proc = g.run(self.clients[0], cmd)
+        all_mounts_procs.append(proc)
+        g.log.info("Successful in creating I/O on mounts")
+
+        # Bring all bricks online
+        g.log.info("bring all bricks online")
+        ret = bring_bricks_online(self.mnode, self.clone,
+                                  bricks_to_bring_offline)
+        self.assertTrue(ret, "Failed to bring bricks online")
+        g.log.info("Successful in bringing all bricks online")
+
+        # Validate Bricks are online
+        g.log.info("Validating all bricks are online")
+        ret = are_bricks_online(self.mnode, self.clone, bricks_list)
+        self.assertTrue(ret, "Failed to bring all the bricks online")
+        g.log.info("bricks online: %s", bricks_list)
+
+        # Wait for volume processes to be online
+        g.log.info("Wait for volume processes to be online")
+        ret = wait_for_volume_process_to_be_online(self.mnode, self.clone)
+        self.assertTrue(ret, ("Failed to wait for volume %s processes to "
+                              "be online" % self.clone))
+        g.log.info("Successful in waiting for volume %s processes to be "
+                   "online", self.clone)
+
+        # Verify volume's all process are online
+        g.log.info("Verifying volume's all process are online")
+        ret = verify_all_process_of_volume_are_online(self.mnode, self.clone)
+        self.assertTrue(ret, ("Volume %s : All process are not online"
+                              % self.clone))
+        g.log.info("Volume %s : All process are online", self.clone)
+
+        # wait for the heal process to complete
+        g.log.info("waiting for heal process to complete")
+        ret = monitor_heal_completion(self.mnode, self.volname)
+        self.assertTrue(ret, "Failed to complete the heal process")
+        g.log.info("Successfully completed heal process")
+
+        # Check areequal
+        # get the subvolumes
+        g.log.info("Starting to get sub-volumes for volume %s", self.clone)
+        subvols = get_subvols(self.mnode, self.clone)
+        num_subvols = len(subvols['volume_subvols'])
+        g.log.info("Number of subvolumes in volume %s:", num_subvols)
+
+        # Get arequals and compare
+        g.log.info("Starting to Compare areequals")
+        for i in range(0, num_subvols):
+            # Get arequal for first brick
+            subvol_brick_list = subvols['volume_subvols'][i]
+            node, brick_path = subvol_brick_list[0].split(':')
+            command = ('arequal-checksum -p %s '
+                       '-i .glusterfs -i .landfill -i .trashcan'
+                       % brick_path)
+            ret, arequal, _ = g.run(node, command)
+            first_brick_total = arequal.splitlines()[-1].split(':')[-1]
+
+        # Get arequal for every brick and compare with first brick
+        for brick in subvol_brick_list:
+            node, brick_path = brick.split(':')
+            command = ('arequal-checksum -p %s '
+                       '-i .glusterfs -i .landfill -i .trashcan'
+                       % brick_path)
+            ret, brick_arequal, _ = g.run(node, command)
+            self.assertFalse(ret,
+                             'Failed to get arequal on brick %s'
+                             % brick)
+            g.log.info('Getting arequal for %s is successful', brick)
+            brick_total = brick_arequal.splitlines()[-1].split(':')[-1]
+            self.assertEqual(first_brick_total, brick_total,
+                             'Arequals for subvol and %s are not equal'
+                             % brick)
+            g.log.info('Arequals for subvol and %s are equal', brick)
+        g.log.info('All arequals are equal for distributed-replicated')
+
+    def tearDown(self):
+
+        # Cleanup and umount cloned volume
+        g.log.info("Starting to umount Volume")
+        ret = umount_volume(self.clients[0], self.mount1)
+        if not ret:
+            raise ExecutionError("Failed to unmount the cloned volume")
+        g.log.info("Successfully Unmounted the cloned volume")
+        g.log.info("Starting to cleanup volume")
+        ret = cleanup_volume(self.mnode, self.clone)
+        if not ret:
+            raise ExecutionError("Failed to cleanup the cloned volume")
+        g.log.info("Successful in cleanup Cloned volume")
+
+        # Unmount and cleanup original volume
+        g.log.info("Starting to Unmount Volume and Cleanup Volume")
+        ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
+        if not ret:
+            raise ExecutionError("Failed to umount the vol & cleanup Volume")
+        g.log.info("Successful in umounting the volume and Cleanup")