Adding testcase: Rebalance with hidden files

If the dataset has hidden files and when added bricks and triggered
rebalance, rebalance should be able to pick the hidden files for
migration and should migrate those without any issues and the
checksum should match post rebalance.

Changes:
- Minor fixes
- Imrpoved imports
- Removed logs of rebalance status

Change-Id: I31c5859e112ad3a6efef7e008995090afda677cc
Signed-off-by: Prasad Desala <tdesala@redhat.com>

1 files changed, 204 insertions, 0 deletions

diff --git a/tests/functional/dht/test_rebalance_with_hidden_files.py b/tests/functional/dht/test_rebalance_with_hidden_files.py
new file mode 100644
index 000000000..6e51f0523
--- /dev/null
+++ b/tests/functional/dht/test_rebalance_with_hidden_files.py
@@ -0,0 +1,204 @@
+#  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.
+
+
+from glusto.core import Glusto as g
+
+from glustolibs.gluster.constants import FILETYPE_FILES
+from glustolibs.gluster.constants import \
+    TEST_FILE_EXISTS_ON_HASHED_BRICKS as FILE_ON_HASHED_BRICKS
+from glustolibs.gluster.dht_test_utils import validate_files_in_dir
+from glustolibs.gluster.exceptions import ExecutionError
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
+from glustolibs.gluster.rebalance_ops import (get_rebalance_status,
+                                              rebalance_start,
+                                              wait_for_rebalance_to_complete)
+from glustolibs.gluster.volume_libs import (
+    expand_volume,
+    log_volume_info_and_status,
+    verify_all_process_of_volume_are_online,
+    wait_for_volume_process_to_be_online)
+from glustolibs.io.utils import (collect_mounts_arequal,
+                                 list_all_files_and_dirs_mounts,
+                                 validate_io_procs)
+from glustolibs.misc.misc_libs import upload_scripts
+
+
+@runs_on([['distributed', 'dispersed', 'replicated',
+           'distributed-replicated', 'distributed-dispersed'],
+          ['glusterfs']])
+class RebalanceValidation(GlusterBaseClass):
+    @classmethod
+    def setUpClass(cls):
+
+        # Calling GlusterBaseClass setUpClass
+        GlusterBaseClass.setUpClass.im_func(cls)
+
+        # Upload io scripts for running IO on mounts
+        g.log.info("Upload io scripts to clients %s for running IO on "
+                   "mounts", cls.clients)
+        script_local_path = ("/usr/share/glustolibs/io/scripts/"
+                             "file_dir_ops.py")
+        cls.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
+                                  "file_dir_ops.py")
+        ret = upload_scripts(cls.clients, script_local_path)
+        if not ret:
+            clients = ", ".join(cls.clients)
+            g.log.error("Failed to upload IO scripts to clients %s",
+                        clients)
+            raise ExecutionError("Failed to upload IO scripts to clients %s" %
+                                 clients)
+        g.log.info("Successfully uploaded IO scripts to clients %s",
+                   cls.clients)
+
+    def setUp(self):
+
+        # Calling GlusterBaseClass setUp
+        GlusterBaseClass.setUp.im_func(self)
+
+        # Setup Volume and Mount Volume
+        g.log.info("Starting to Setup Volume and Mount Volume")
+        ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
+        if not ret:
+            g.log.error("Failed to Setup_Volume and Mount_Volume")
+            raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
+        g.log.info("Successful in Setup Volume and Mount Volume")
+
+    def tearDown(self):
+
+        # Unmount Volume and Cleanup 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 Unmount Volume and Cleanup Volume")
+        g.log.info("Successful in Unmount Volume and Cleanup Volume")
+
+        # Calling GlusterBaseClass tearDown
+        GlusterBaseClass.tearDown.im_func(self)
+
+    def test_rebalance_with_hidden_files(self):
+        # pylint: disable=too-many-statements
+        # Start IO on mounts
+        g.log.info("Starting IO on all mounts...")
+        self.all_mounts_procs = []
+        for mount_obj in self.mounts:
+            g.log.info("Starting IO on %s:%s", mount_obj.client_system,
+                       mount_obj.mountpoint)
+            cmd = ("python %s create_files "
+                   "--base-file-name . "
+                   "-f 99 %s" % (self.script_upload_path,
+                                 mount_obj.mountpoint))
+            proc = g.run_async(mount_obj.client_system, cmd,
+                               user=mount_obj.user)
+            self.all_mounts_procs.append(proc)
+
+        # validate IO
+        g.log.info("Validating IO on mounts")
+        ret = validate_io_procs(self.all_mounts_procs, self.mounts)
+        self.assertTrue(ret, "IO failed on some of the clients")
+        g.log.info("IO is successful on all mounts")
+
+        # List all files and dirs created
+        g.log.info("List all files and directories:")
+        ret = list_all_files_and_dirs_mounts(self.mounts)
+        self.assertTrue(ret, "Failed to list all files and dirs")
+        g.log.info("Listing all files and directories is successful")
+
+        # Verify DHT values across mount points
+        for mount_obj in self.mounts:
+            g.log.debug("Verifying hash layout values %s:%s",
+                        mount_obj.client_system, mount_obj.mountpoint)
+            ret = validate_files_in_dir(mount_obj.client_system,
+                                        mount_obj.mountpoint,
+                                        test_type=FILE_ON_HASHED_BRICKS,
+                                        file_type=FILETYPE_FILES)
+            self.assertTrue(ret, "Expected - Files are created on only "
+                                 "sub-volume according to its hashed value")
+            g.log.info("Hash layout values are verified %s:%s",
+                       mount_obj.client_system, mount_obj.mountpoint)
+
+        # Getting areequal checksum before rebalance
+        g.log.info("Getting areequal checksum before rebalance")
+        arequal_checksum_before_rebalance = collect_mounts_arequal(self.mounts)
+
+        # Log Volume Info and Status before expanding the volume.
+        g.log.info("Logging volume info and Status before expanding volume")
+        log_volume_info_and_status(self.mnode, self.volname)
+
+        # Expanding volume by adding bricks to the volume
+        g.log.info("Start adding bricks to volume")
+        ret = expand_volume(self.mnode, self.volname, self.servers,
+                            self.all_servers_info)
+        self.assertTrue(ret, ("Failed to expand the volume %s", self.volname))
+        g.log.info("Expanding volume is successful on "
+                   "volume %s", self.volname)
+
+        # Wait for gluster processes to come online
+        g.log.info("Wait for gluster processes to come online")
+        ret = wait_for_volume_process_to_be_online(self.mnode, self.volname)
+        self.assertTrue(ret, ("Failed to wait for volume %s processes to "
+                              "be online", self.volname))
+        g.log.info("Successful in waiting for volume %s processes to be "
+                   "online", self.volname)
+
+        # 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.volname)
+        self.assertTrue(ret, ("Volume %s : All process are not online ",
+                              self.volname))
+        g.log.info("Volume %s : All process are online", self.volname)
+
+        # Log Volume Info and Status after expanding the volume
+        g.log.info("Logging volume info and Status after expanding volume")
+        log_volume_info_and_status(self.mnode, self.volname)
+
+        # Start Rebalance
+        g.log.info("Starting Rebalance on the volume")
+        ret, _, _ = rebalance_start(self.mnode, self.volname)
+        self.assertEqual(ret, 0, ("Failed to start rebalance on the volume "
+                                  "%s", self.volname))
+        g.log.info("Successfully started rebalance on the volume %s",
+                   self.volname)
+
+        # Wait for rebalance to complete
+        g.log.info("Waiting for rebalance to complete")
+        ret = wait_for_rebalance_to_complete(self.mnode, self.volname)
+        self.assertTrue(ret, ("Rebalance is not yet complete on the volume "
+                              "%s", self.volname))
+        g.log.info("Rebalance is successfully complete on the volume %s",
+                   self.volname)
+
+        # Checking if there are any migration failures
+        status = get_rebalance_status(self.mnode, self.volname)
+        for each_node in status['node']:
+            failed_files_count = int(each_node['failures'])
+            self.assertEqual(failed_files_count, 0,
+                             "Rebalance failed to migrate few files on %s" %
+                             each_node['nodeName'])
+            g.log.info("There are no migration failures")
+
+        # Getting areequal checksum after rebalance
+        g.log.info("Getting areequal checksum after rebalance")
+        arequal_checksum_after_rebalance = collect_mounts_arequal(self.
+                                                                  mounts)
+
+        # Comparing arequals checksum before and after rebalance
+        g.log.info("Comparing arequals checksum before and after rebalance")
+        self.assertEqual(arequal_checksum_before_rebalance,
+                         arequal_checksum_after_rebalance,
+                         "arequal checksum is NOT MATCHNG")
+        g.log.info("arequal checksum is SAME")