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authorkarthik-us <ksubrahm@redhat.com>2018-06-25 17:00:26 +0530
committerVijay Avuthu <vavuthu@redhat.com>2018-06-28 11:45:42 +0000
commit54274586953a19b0962980e19908e0f00f2f83c1 (patch)
tree3863d9d927c76f586d3d9f607463c7b743e40881 /tests/functional/afr
parent85e85b6b11be6c385e2653918aad524e0d0025d2 (diff)
afr: Test data split-brain resolution using heal CLI
Change-Id: I525f50a42e29270d9ac445d62e12c7e7e25a7ae3 Signed-off-by: karthik-us <ksubrahm@redhat.com>
Diffstat (limited to 'tests/functional/afr')
-rw-r--r--tests/functional/afr/heal/test_data_split_brain_resolution.py270
1 files changed, 270 insertions, 0 deletions
diff --git a/tests/functional/afr/heal/test_data_split_brain_resolution.py b/tests/functional/afr/heal/test_data_split_brain_resolution.py
new file mode 100644
index 0000000..e1284ca
--- /dev/null
+++ b/tests/functional/afr/heal/test_data_split_brain_resolution.py
@@ -0,0 +1,270 @@
+# 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.
+
+# pylint: disable=too-many-statements, too-many-locals
+
+""" Description:
+ Test cases in this module tests whether heal command for resolving
+ split-brains will resolve all the files in data-split brains by using
+ one of the method (bigger-file/latest-mtime/source-brick).
+"""
+
+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.misc.misc_libs import upload_scripts
+from glustolibs.gluster.volume_ops import set_volume_options
+from glustolibs.gluster.heal_ops import trigger_heal
+from glustolibs.gluster.heal_libs import (monitor_heal_completion,
+ is_volume_in_split_brain)
+from glustolibs.gluster.brick_libs import (get_all_bricks,
+ bring_bricks_offline,
+ bring_bricks_online,
+ are_bricks_offline,
+ are_bricks_online)
+
+
+@runs_on([['replicated'],
+ ['glusterfs']])
+class HealDataSplitBrain(GlusterBaseClass):
+
+ @classmethod
+ def setUpClass(cls):
+
+ # Calling GlusterBaseClass setUpClass
+ GlusterBaseClass.setUpClass.im_func(cls)
+
+ # Override Volume
+ if cls.volume_type == "replicated":
+ cls.volume['voltype'] = {
+ 'type': 'replicated',
+ 'replica_count': 2,
+ 'transport': 'tcp'}
+
+ # 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:
+ raise ExecutionError("Failed to upload IO scripts "
+ "to clients %s" % cls.clients)
+ g.log.info("Successfully uploaded IO scripts to clients %s",
+ cls.clients)
+
+ # Setup Volume and Mount Volume
+ g.log.info("Starting to Setup Volume and Mount Volume")
+ ret = cls.setup_volume_and_mount_volume(cls.mounts)
+ if not ret:
+ raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
+ g.log.info("Successful in Setup Volume and Mount Volume")
+
+ @classmethod
+ def tearDownClass(cls):
+
+ # Cleanup Volume
+ g.log.info("Starting to clean up Volume %s", cls.volname)
+ ret = cls.unmount_volume_and_cleanup_volume(cls.mounts)
+ if not ret:
+ raise ExecutionError("Failed to create volume")
+ g.log.info("Successful in cleaning up Volume %s", cls.volname)
+
+ GlusterBaseClass.tearDownClass.im_func(cls)
+
+ def verify_brick_arequals(self):
+ g.log.info("Fetching bricks for the volume: %s", self.volname)
+ bricks_list = get_all_bricks(self.mnode, self.volname)
+ g.log.info('Getting arequal on bricks...')
+ arequal_0 = 0
+ for brick in bricks_list:
+ g.log.info('Getting arequal on bricks %s...', brick)
+ node, brick_path = brick.split(':')
+ command = ('arequal-checksum -p %s '
+ '-i .glusterfs -i .landfill -i .trashcan'
+ % brick_path)
+ ret, 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 = arequal.splitlines()[-1].split(':')[-1]
+ if arequal_0 == 0:
+ arequal_0 = brick_total
+ else:
+ self.assertEqual(brick_total, arequal_0, 'Arequal for %s and '
+ '%s are not equal' % (bricks_list[0], brick))
+ g.log.info('All arequals are equal on all the bricks')
+
+ def test_data_split_brain_resolution(self):
+ # Setting options
+ g.log.info('Setting options...')
+ options = {"metadata-self-heal": "off",
+ "entry-self-heal": "off",
+ "data-self-heal": "off"}
+ ret = set_volume_options(self.mnode, self.volname, options)
+ self.assertTrue(ret, 'Failed to set options %s' % options)
+ g.log.info("Successfully set %s for volume %s",
+ options, self.volname)
+
+ # Creating files and directories on client side
+ g.log.info('Creating files and directories...')
+ cmd = ("for i in `seq 1 10`; do mkdir %s/dir.$i; for j in `seq 1 5`;"
+ "do dd if=/dev/urandom of=%s/dir.$i/file.$j bs=1K count=1;"
+ "done; dd if=/dev/urandom of=%s/file.$i bs=1K count=1; done"
+ % (self.mounts[0].mountpoint, self.mounts[0].mountpoint,
+ self.mounts[0].mountpoint))
+
+ ret, _, _ = g.run(self.mounts[0].client_system, cmd)
+ self.assertEqual(ret, 0, "Creating files and directories failed")
+ g.log.info("Files & directories created successfully")
+
+ # Check arequals for all the bricks
+ g.log.info('Getting arequal before getting bricks offline...')
+ self.verify_brick_arequals()
+ g.log.info('Getting arequal before getting bricks offline '
+ 'is successful')
+
+ # Set option self-heal-daemon to OFF
+ g.log.info('Setting option self-heal-daemon to off...')
+ options = {"self-heal-daemon": "off"}
+ ret = set_volume_options(self.mnode, self.volname, options)
+ self.assertTrue(ret, 'Failed to set options %s' % options)
+ g.log.info("Option 'self-heal-daemon' is set to 'off' successfully")
+
+ bricks_list = get_all_bricks(self.mnode, self.volname)
+
+ # Bring brick1 offline
+ g.log.info('Bringing brick %s offline', bricks_list[0])
+ ret = bring_bricks_offline(self.volname, bricks_list[0])
+ self.assertTrue(ret, 'Failed to bring bricks %s offline'
+ % bricks_list[0])
+
+ ret = are_bricks_offline(self.mnode, self.volname,
+ [bricks_list[0]])
+ self.assertTrue(ret, 'Brick %s is not offline'
+ % bricks_list[0])
+ g.log.info('Bringing brick %s offline is successful',
+ bricks_list[0])
+
+ # Modify the contents of the files
+ cmd = ("for i in `seq 1 10`; do for j in `seq 1 5`;"
+ "do dd if=/dev/urandom of=%s/dir.$i/file.$j bs=1M count=1;"
+ "done; dd if=/dev/urandom of=%s/file.$i bs=1K count=1; done"
+ % (self.mounts[0].mountpoint, self.mounts[0].mountpoint))
+
+ ret, _, _ = g.run(self.mounts[0].client_system, cmd)
+ self.assertEqual(ret, 0, "Updating file contents failed")
+ g.log.info("File contents updated successfully")
+
+ # Bricng brick1 online and check the status
+ g.log.info('Bringing brick %s online', bricks_list[0])
+ ret = bring_bricks_online(self.mnode, self.volname,
+ [bricks_list[0]])
+ self.assertTrue(ret, 'Failed to bring brick %s online' %
+ bricks_list[0])
+ g.log.info('Bringing brick %s online is successful', bricks_list[0])
+
+ g.log.info("Verifying if brick %s is online", bricks_list[0])
+ ret = are_bricks_online(self.mnode, self.volname, bricks_list)
+ self.assertTrue(ret, ("Brick %s did not come up", bricks_list[0]))
+ g.log.info("Brick %s has come online.", bricks_list[0])
+
+ # Bring brick2 offline
+ g.log.info('Bringing brick %s offline', bricks_list[1])
+ ret = bring_bricks_offline(self.volname, bricks_list[1])
+ self.assertTrue(ret, 'Failed to bring bricks %s offline'
+ % bricks_list[1])
+
+ ret = are_bricks_offline(self.mnode, self.volname,
+ [bricks_list[1]])
+ self.assertTrue(ret, 'Brick %s is not offline'
+ % bricks_list[1])
+ g.log.info('Bringing brick %s offline is successful',
+ bricks_list[1])
+
+ # Modify the contents of the files
+ cmd = ("for i in `seq 1 10`; do for j in `seq 1 5`;"
+ "do dd if=/dev/urandom of=%s/dir.$i/file.$j bs=1M count=2;"
+ "done; dd if=/dev/urandom of=%s/file.$i bs=1K count=2; done"
+ % (self.mounts[0].mountpoint, self.mounts[0].mountpoint))
+
+ ret, _, _ = g.run(self.mounts[0].client_system, cmd)
+ self.assertEqual(ret, 0, "Updating file contents failed")
+ g.log.info("File contents updated successfully")
+
+ # Bricng brick2 online and check the status
+ g.log.info('Bringing brick %s online', bricks_list[1])
+ ret = bring_bricks_online(self.mnode, self.volname,
+ [bricks_list[1]])
+ self.assertTrue(ret, 'Failed to bring brick %s online' %
+ bricks_list[1])
+ g.log.info('Bringing brick %s online is successful', bricks_list[1])
+
+ g.log.info("Verifying if brick %s is online", bricks_list[1])
+ ret = are_bricks_online(self.mnode, self.volname, bricks_list)
+ self.assertTrue(ret, ("Brick %s did not come up", bricks_list[1]))
+ g.log.info("Brick %s has come online.", bricks_list[1])
+
+ # Set option self-heal-daemon to ON
+ g.log.info('Setting option self-heal-daemon to on...')
+ options = {"self-heal-daemon": "on"}
+ ret = set_volume_options(self.mnode, self.volname, options)
+ self.assertTrue(ret, 'Failed to set options %s' % options)
+ g.log.info("Option 'self-heal-daemon' is set to 'on' successfully")
+
+ g.log.info("Checking if files are in split-brain")
+ ret = is_volume_in_split_brain(self.mnode, self.volname)
+ self.assertTrue(ret, "Unable to create split-brain scenario")
+ g.log.info("Successfully created split brain scenario")
+
+ g.log.info("Resolving split-brain by using the source-brick option "
+ "by choosing second brick as source for all the files")
+ node, _ = bricks_list[1].split(':')
+ command = ("gluster v heal " + self.volname + " split-brain "
+ "source-brick " + bricks_list[1])
+ ret, _, _ = g.run(node, command)
+ self.assertEqual(ret, 0, "Command execution not successful")
+
+ # triggering heal
+ ret = trigger_heal(self.mnode, self.volname)
+ self.assertTrue(ret, "Heal not triggered")
+
+ # waiting for heal to complete
+ ret = monitor_heal_completion(self.mnode, self.volname,
+ timeout_period=120)
+ self.assertTrue(ret, "Heal not completed")
+
+ # Try accessing the file content from the mount
+ cmd = ("for i in `seq 1 10`; do cat %s/file.$i > /dev/null;"
+ "for j in `seq 1 5` ; do cat %s/dir.$i/file.$j > /dev/null;"
+ "done ; done"
+ % (self.mounts[0].mountpoint, self.mounts[0].mountpoint))
+ ret, _, _ = g.run(self.mounts[0].client_system, cmd)
+ self.assertEqual(ret, 0, "Unable to access the file contents")
+ g.log.info("File contents are accessible")
+
+ # checking if file is in split-brain
+ ret = is_volume_in_split_brain(self.mnode, self.volname)
+ self.assertFalse(ret, "File still in split-brain")
+ g.log.info("Successfully resolved split brain situation using "
+ "CLI based resolution")
+
+ # Check arequals for all the bricks
+ g.log.info('Getting arequal for all the bricks after heal...')
+ self.verify_brick_arequals()
+ g.log.info('Getting arequal after heal is successful')