# Copyright (C) 2020 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_libs import get_subvols from glustolibs.gluster.heal_libs import (monitor_heal_completion, is_heal_complete, is_volume_in_split_brain, is_shd_daemon_running) from glustolibs.misc.misc_libs import upload_scripts from glustolibs.io.utils import (collect_mounts_arequal, validate_io_procs, list_all_files_and_dirs_mounts, wait_for_io_to_complete) from glustolibs.gluster.gluster_init import (start_glusterd, stop_glusterd) from glustolibs.misc.misc_libs import kill_process @runs_on([['arbiter', 'distributed-arbiter'], ['glusterfs', 'nfs']]) class TestArbiterSelfHeal(GlusterBaseClass): """ Description: Arbiter Test cases related to healing in default configuration of the volume """ @classmethod def setUpClass(cls): # Calling GlusterBaseClass setUpClass cls.get_super_method(cls, 'setUpClass')() # Upload io scripts for running IO on mounts cls.script_upload_path = ("/usr/share/glustolibs/io/scripts/" "file_dir_ops.py") ret = upload_scripts(cls.clients, [cls.script_upload_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 self.get_super_method(self, 'setUp')() self.all_mounts_procs = [] self.io_validation_complete = False # 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): """ If test method failed before validating IO, tearDown waits for the IO's to complete and checks for the IO exit status Cleanup and umount volume """ if not self.io_validation_complete: ret = wait_for_io_to_complete(self.all_mounts_procs, self.mounts) if not ret: raise ExecutionError("IO failed on some of the clients") g.log.info("IO is successful on all mounts") # List all files and dirs created ret = list_all_files_and_dirs_mounts(self.mounts) if not ret: raise ExecutionError("Failed to list all files and dirs") # Cleanup and umount 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 self.get_super_method(self, 'tearDown')() def test_heal_full_after_deleting_files(self): """ - Create IO - Calculate arequal from mount - kill glusterd process and glustershd process on arbiter nodes - Delete data from backend from the arbiter nodes - Start glusterd process and force start the volume to bring the processes online - Check if heal is completed - Check for split-brain - Calculate arequal checksum and compare it """ # pylint: disable=too-many-locals,too-many-statements # Creating files on client side for mount_obj in self.mounts: g.log.info("Generating data for %s:%s", mount_obj.client_system, mount_obj.mountpoint) # Create dirs with file command = ("/usr/bin/env python %s create_deep_dirs_with_files " "-d 2 -l 2 -n 2 -f 20 %s" % (self.script_upload_path, mount_obj.mountpoint)) proc = g.run_async(mount_obj.client_system, command, user=mount_obj.user) self.all_mounts_procs.append(proc) self.io_validation_complete = False # Validate IO ret = validate_io_procs(self.all_mounts_procs, self.mounts) self.assertTrue(ret, "IO failed on some of the clients") self.io_validation_complete = True g.log.info("IO is successful on all mounts") # Get arequal before killing gluster processes on arbiter node ret, result_before_killing_procs = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal before getting bricks offline ' 'is successful') # Kill glusterd process and glustershd process on arbiter node subvols = get_subvols(self.mnode, self.volname)['volume_subvols'] for subvol in subvols: arbiter = subvol[-1] node, brick_path = arbiter.split(':') # Stop glusterd ret = stop_glusterd(node) self.assertTrue(ret, "Failed to stop the glusterd on arbiter node") # Stop glustershd ret = kill_process(node, "glustershd") if not ret: # Validate glustershd process is not running self.assertFalse( is_shd_daemon_running(self.mnode, node, self.volname), "The glustershd process is still running.") g.log.info('Killed glusterd and glustershd for all arbiter ' 'brick successfully') # Delete data from backend from the arbiter node for subvol in subvols: arbiter = subvol[-1] # Clearing the arbiter bricks node, brick_path = arbiter.split(':') ret, _, err = g.run(node, 'rm -rf %s/*' % brick_path) self.assertFalse( ret, err) g.log.info('Clearing for all arbiter brick is successful') # Start glusterd process on each arbiter for subvol in subvols: arbiter = subvol[-1] node, brick_path = arbiter.split(':') ret = start_glusterd(node) self.assertTrue( ret, "Failed to start glusterd on the arbiter node") # 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 healing ret, result_after_healing = collect_mounts_arequal(self.mounts) self.assertTrue(ret, 'Failed to get arequal') g.log.info('Getting arequal after getting bricks online ' 'is successful') # Comparing arequals before before killing arbiter processes # and after healing self.assertEqual( result_before_killing_procs, result_after_healing, 'Arequals arequals before before killing arbiter ' 'processes and after healing are not equal') g.log.info('Arequals before killing arbiter ' 'processes and after healing are equal')