# 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. """ Test Description: Test Disperse Quorum Count Set to 6 """ from random import sample, choice 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.misc.misc_libs import upload_scripts from glustolibs.io.utils import validate_io_procs from glustolibs.gluster.brick_libs import (bring_bricks_online, wait_for_bricks_to_be_online, get_offline_bricks_list, bring_bricks_offline) from glustolibs.gluster.rebalance_ops import (rebalance_start, wait_for_rebalance_to_complete) from glustolibs.gluster.volume_ops import (volume_reset, set_volume_options) from glustolibs.gluster.volume_libs import ( log_volume_info_and_status, expand_volume, get_subvols) @runs_on([['dispersed', 'distributed-dispersed'], ['glusterfs']]) class TestEcQuorumCount6(GlusterBaseClass): @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')() # 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 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_ec_quorumcount_6(self): """ Test Steps: - Write IO's when all bricks are online - Get subvol from which bricks to be brought down - Set volume disperse quorum count to 6 - Start writing and reading IO's - Bring a brick down,say b1 - Validate write has failed and read is successful - Start IO's again while quorum is not met on volume write should fail and read should pass - Add-brick and log - Start Rebalance - Wait for rebalance,which should fail as quorum is not met - Bring brick online - Wait for brick to come online - Check if bricks are online - Start IO's again when all bricks are online - IO's should complete successfully - Start IO's again and reset volume - Bring down other bricks to max redundancy - Validating IO's and waiting to complete """ # pylint: disable=too-many-branches,too-many-statements,too-many-locals mountpoint = self.mounts[0].mountpoint client1 = self.mounts[0].client_system client2 = self.mounts[1].client_system # Write IO's when all bricks are online writecmd = ("cd %s; for i in `seq 1 100` ;" "do dd if=/dev/urandom of=file$i bs=1M " "count=5;done" % mountpoint) # IO's should complete successfully ret, _, err = g.run(client1, writecmd) self.assertEqual(ret, 0, err) g.log.info('Finished writes on files sucessfully') # Select a subvol from which bricks to be brought down sub_vols = get_subvols(self.mnode, self.volname) bricks_list1 = list(choice(sub_vols['volume_subvols'])) brick_1 = sample(bricks_list1, 1) # Set volume disperse quorum count to 6 ret = set_volume_options(self.mnode, self.volname, {"disperse.quorum-count": "6"}) self.assertTrue(ret, 'Failed to set volume {}' ' options'.format(self.volname)) g.log.info('Successfully set disperse quorum on %s', self.volname) # Start writing and reading IO's procwrite, procread, count = [], [], 1 for mount_obj in self.mounts: writecmd = ("/usr/bin/env python %s create_deep_dirs_with_files " "--dirname-start-num %d --dir-depth 1 " "--dir-length 10 --max-num-of-dirs 1 " "--num-of-files 10 %s" % ( self.script_upload_path, count, mount_obj.mountpoint)) proc = g.run_async(mount_obj.client_system, writecmd, user=mount_obj.user) procwrite.append(proc) count = count + 10 readcmd = ("cd %s; for i in `seq 1 100` ;" "do dd if=file$i of=/dev/null bs=1M " "count=5;done" % mountpoint) ret = g.run_async(client2, readcmd) procread.append(ret) # Brick 1st brick down ret = bring_bricks_offline(self.volname, brick_1) self.assertTrue(ret, 'Brick {} is not offline'.format(brick_1)) g.log.info('Brick %s is offline successfully', brick_1) # Validate write has failed and read is successful ret = validate_io_procs(procwrite, self.mounts) self.assertFalse(ret, 'Write successful even after disperse quorum is ' 'not met') g.log.info('EXPECTED - Writes failed as disperse quroum is not met') ret = validate_io_procs(procread, self.mounts[1]) self.assertTrue(ret, 'Read operation failed on the client') g.log.info('Reads on files successful') # Start IO's again while quorum is not met on volume writecmd = ("/usr/bin/env python %s create_deep_dirs_with_files " "--dirname-start-num 20 --dir-depth 1 " "--dir-length 10 --max-num-of-dirs 1 " "--num-of-files 10 %s" % ( self.script_upload_path, mountpoint)) readcmd = ("cd %s; for i in `seq 1 100` ;" "do dd if=file$i of=/dev/null bs=1M " "count=5;done" % mountpoint) ret, _, err = g.run(client1, writecmd) self.assertNotEqual(ret, 0, 'Writes passed even after disperse quorum ' 'not met') g.log.info('Expected: Writes failed as disperse quorum is not ' 'met with %s error', err) ret, _, err = g.run(client2, readcmd) self.assertEqual(ret, 0, err) g.log.info('Reads on files successful') # Add brick ret = expand_volume(self.mnode, self.volname, self.servers, self.all_servers_info, force=True) self.assertTrue(ret, ("Failed to expand the volume {}".format (self.volname))) g.log.info("Expanding volume %s is successful", self.volname) # Log Volume Info and Status after expanding the volume ret = log_volume_info_and_status(self.mnode, self.volname) self.assertTrue(ret, ("Logging volume info and status failed on " "volume {}".format(self.volname))) g.log.info("Successful in logging volume info and status of volume %s", self.volname) # Start Rebalance ret, _, _ = rebalance_start(self.mnode, self.volname) self.assertEqual(ret, 0, ('Rebalance failed on the volume' ' {}'.format(self.volname))) g.log.info('Rebalance has started on volume %s', self.volname) # Wait for rebalance to complete # Which should also fail as quorum is not met ret = wait_for_rebalance_to_complete(self.mnode, self.volname, timeout=600) self.assertFalse(ret, "Rebalance passed though disperse quorum " "is not met on volume") g.log.info("Expected: Rebalance failed on the volume %s,disperse" " quorum is not met", self.volname) # Bring brick online ret = bring_bricks_online(self.mnode, self.volname, brick_1) self.assertTrue(ret, 'Brick not brought online') g.log.info('Brick brought online successfully') # Wait for brick to come online ret = wait_for_bricks_to_be_online(self.mnode, self.volname) self.assertTrue(ret, 'Bricks are not online') g.log.info('EXPECTED : Bricks are online') # Check if bricks are online ret = get_offline_bricks_list(self.mnode, self.volname) self.assertListEqual(ret, [], 'All bricks are not online') g.log.info('All bricks are online') # Start IO's again when all bricks are online writecmd = ("cd %s; for i in `seq 101 200` ;" "do dd if=/dev/urandom of=file$i bs=1M " "count=5;done" % mountpoint) readcmd = ("cd %s; for i in `seq 101 200` ;" "do dd if=file$i of=/dev/null bs=1M " "count=5;done" % mountpoint) # IO's should complete successfully ret, _, err = g.run(client1, writecmd) self.assertEqual(ret, 0, err) g.log.info('Writes on client % successful', client1) ret, _, err = g.run(client2, readcmd) self.assertEqual(ret, 0, err) g.log.info('Read on client % successful', client2) # Start IO's again all_mounts_procs, count = [], 30 for mount_obj in self.mounts: cmd = ("/usr/bin/env python %s create_deep_dirs_with_files " "--dirname-start-num %d --dir-depth 2 " "--dir-length 10 --max-num-of-dirs 5 " "--num-of-files 5 %s" % ( self.script_upload_path, count, mount_obj.mountpoint)) proc = g.run_async(mount_obj.client_system, cmd, user=mount_obj.user) all_mounts_procs.append(proc) count = count + 10 # Reset volume ret, _, err = volume_reset(self.mnode, self.volname) self.assertEqual(ret, 0, err) g.log.info('Reset of volume %s successful', self.volname) # Bring down other bricks to max redundancy # Bringing bricks offline bricks_to_offline = sample(bricks_list1, 2) ret = bring_bricks_offline(self.volname, bricks_to_offline) self.assertTrue(ret, 'Redundant bricks not offline') g.log.info('Redundant bricks are offline successfully') # Validating IO's and waiting to complete ret = validate_io_procs(all_mounts_procs, self.mounts) self.assertTrue(ret, 'IO failed on some of the clients') g.log.info("Successfully validated all IO's")