# Copyright (C) 2015-2018 Red Hat, Inc. # # 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.gluster_base_class import (GlusterBaseClass, runs_on) from glustolibs.gluster.exceptions import ExecutionError from glustolibs.gluster.volume_ops import set_volume_options from glustolibs.gluster.volume_libs import ( verify_all_process_of_volume_are_online, wait_for_volume_process_to_be_online) from glustolibs.gluster.brick_libs import (select_bricks_to_bring_offline, bring_bricks_offline, bring_bricks_online, are_bricks_offline) from glustolibs.gluster.heal_libs import (monitor_heal_completion, is_heal_complete, is_volume_in_split_brain, is_shd_daemonized) from glustolibs.gluster.heal_ops import trigger_heal from glustolibs.misc.misc_libs import upload_scripts from glustolibs.io.utils import (collect_mounts_arequal, validate_io_procs) @runs_on([['replicated', 'distributed-replicated'], ['glusterfs', 'nfs']]) class TestSelfHeal(GlusterBaseClass): """ Description: Arbiter Test cases related to healing in default configuration of the volume """ @classmethod def setUpClass(cls): # Calling GlusterBaseClass setUpClass GlusterBaseClass.setUpClass.im_func(cls) # Overriding the volume type to specifically test the volume type # Change from distributed-replicated to arbiter if cls.volume_type == "distributed-replicated": cls.volume['voltype'] = { 'type': 'distributed-replicated', 'dist_count': 2, 'replica_count': 3, 'arbiter_count': 1, '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) 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: raise ExecutionError("Failed to Setup_Volume and Mount_Volume") g.log.info("Successful in Setup Volume and Mount Volume") def tearDown(self): """ Cleanup and umount volume """ # Cleanup and umount 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") # Calling GlusterBaseClass teardown GlusterBaseClass.tearDown.im_func(self) def test_self_heal_symbolic_links(self): """ Test Self-Heal of Symbolic Links (heal command) Description: - set the volume option "metadata-self-heal": "off" "entry-self-heal": "off" "data-self-heal": "off" "data-self-heal-algorithm": "diff" "self-heal-daemon": "off" - create IO - calculate arequal - bring down all bricks processes from selected set - calculate arequals and compare with arequal before bringing bricks offline - modify the data and verify whether the links are properly created - calculate arequal before getting bricks online - bring bricks online - set the volume option "self-heal-daemon": "on" - check daemons and start healing - check is heal is complited - check for split-brain - calculate arequal after getting bricks online and compare with arequal before getting bricks online """ # pylint: disable=too-many-locals,too-many-statements # Setting options g.log.info('Setting options...') options = {"metadata-self-heal": "off", "entry-self-heal": "off", "data-self-heal": "off", "self-heal-daemon": "off"} ret = set_volume_options(self.mnode, self.volname, options) self.assertTrue(ret, 'Failed to set options') g.log.info("Options " "'metadata-self-heal', " "'entry-self-heal', " "'data-self-heal', " "'self-heal-daemon' " "are set to 'off' successfully") # Creating files on client side all_mounts_procs = [] test_sym_link_self_heal_folder = 'test_sym_link_self_heal' g.log.info("Generating data for %s:%s", self.mounts[0].client_system, self.mounts[0].mountpoint) # Creating files command = ("cd %s/ ; " "mkdir %s ; " "cd %s/ ;" "for i in `seq 1 5` ; " "do mkdir dir.$i ; " "for j in `seq 1 10` ; " "do dd if=/dev/urandom of=dir.$i/file.$j " "bs=1k count=$j ; " "done ; " "done ;" % (self.mounts[0].mountpoint, test_sym_link_self_heal_folder, test_sym_link_self_heal_folder)) proc = g.run_async(self.mounts[0].client_system, command, user=self.mounts[0].user) all_mounts_procs.append(proc) # Validate IO self.assertTrue( validate_io_procs(all_mounts_procs, self.mounts), "IO failed on some of the clients" ) # Get arequal before getting bricks offline g.log.info('Getting arequal before getting bricks offline...') ret, result_before_offline = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal before getting bricks offline ' 'is successful') # Select bricks to bring 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'])) # Bring brick offline g.log.info('Bringing bricks %s offline...', bricks_to_bring_offline) ret = bring_bricks_offline(self.volname, bricks_to_bring_offline) self.assertTrue(ret, 'Failed to bring bricks %s offline' % bricks_to_bring_offline) ret = are_bricks_offline(self.mnode, self.volname, bricks_to_bring_offline) self.assertTrue(ret, 'Bricks %s are not offline' % bricks_to_bring_offline) g.log.info('Bringing bricks %s offline is successful', bricks_to_bring_offline) # Get arequal after getting bricks offline g.log.info('Getting arequal after getting bricks offline...') ret, result_after_offline = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal after getting bricks offline ' 'is successful') # Checking arequals before bringing bricks offline # and after bringing bricks offline self.assertItemsEqual(result_before_offline, result_after_offline, 'Checksums before and ' 'after bringing bricks online are not equal') g.log.info('Checksums before and after bringing bricks online ' 'are equal') # Modify the data g.log.info("Modifying data for %s:%s", self.mounts[0].client_system, self.mounts[0].mountpoint) # Create symlinks g.log.info('Creating symlinks...') command = ("cd %s/%s/ ; " "for i in `seq 1 5` ; " "do ln -s dir.$i sym_link_dir.$i ; " "done ;" % (self.mounts[0].mountpoint, test_sym_link_self_heal_folder)) ret, _, _ = g.run(self.mounts[0].client_system, command) self.assertEqual(ret, 0, 'Failed to modify the data for %s...' % self.mounts[0].mountpoint) g.log.info('Modifying the data for %s is successful', self.mounts[0].mountpoint) # Verify whether the links are properly created # Get symlink list command = ("cd %s/%s/ ; " "ls |grep 'sym'" % (self.mounts[0].mountpoint, test_sym_link_self_heal_folder)) _, out, _ = g.run(self.mounts[0].client_system, command) symlink_list = out.strip().split('\n') # Get folder list command = ("cd %s/%s/ ; " "ls |grep -v 'sym'" % (self.mounts[0].mountpoint, test_sym_link_self_heal_folder)) _, out, _ = g.run(self.mounts[0].client_system, command) folder_list = out.strip().split('\n') # Compare symlinks and folders for symlink in symlink_list: symlink_index = symlink_list.index(symlink) command = ("cd %s/%s/ ; " "readlink %s" % (self.mounts[0].mountpoint, test_sym_link_self_heal_folder, symlink)) _, out, _ = g.run(self.mounts[0].client_system, command) symlink_to_folder = out.strip() self.assertEqual(symlink_to_folder, folder_list[symlink_index], 'Links are not properly created') g.log.info('Links for %s are properly created', self.mounts[0].mountpoint) # Get arequal before getting bricks online g.log.info('Getting arequal before getting bricks online...') ret, result_before_online = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal before getting bricks online ' 'is successful') # Bring brick online g.log.info('Bringing bricks %s online', bricks_to_bring_offline) ret = bring_bricks_online(self.mnode, self.volname, bricks_to_bring_offline) self.assertTrue(ret, 'Failed to bring bricks %s online' % bricks_to_bring_offline) g.log.info('Bringing bricks %s online is successful', bricks_to_bring_offline) # Setting options g.log.info('Setting options...') 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") # 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.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) # Wait for self-heal-daemons to be online g.log.info("Waiting for self-heal-daemons to be online") ret = is_shd_daemonized(self.all_servers) self.assertTrue(ret, "Either No self heal daemon process found") g.log.info("All self-heal-daemons are online") # Start healing ret = trigger_heal(self.mnode, self.volname) self.assertTrue(ret, 'Heal is not started') g.log.info('Healing is started') # Monitor heal completion ret = monitor_heal_completion(self.mnode, self.volname) self.assertTrue(ret, 'Heal has not yet completed') # Check if heal is completed ret = is_heal_complete(self.mnode, self.volname) self.assertTrue(ret, 'Heal is not complete') g.log.info('Heal is completed successfully') # Check for split-brain ret = is_volume_in_split_brain(self.mnode, self.volname) self.assertFalse(ret, 'Volume is in split-brain state') g.log.info('Volume is not in split-brain state') # Get arequal after getting bricks online g.log.info('Getting arequal after getting bricks online...') ret, result_after_online = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal after getting bricks online ' 'is successful') # Checking arequals before bringing bricks online # and after bringing bricks online self.assertItemsEqual(result_before_online, result_after_online, 'Checksums before and ' 'after bringing bricks online are not equal') g.log.info('Checksums before and after bringing bricks online ' 'are equal')