# 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 random import sample 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 ( verify_all_process_of_volume_are_online, wait_for_volume_process_to_be_online) from glustolibs.gluster.brick_libs import ( get_all_bricks, bring_bricks_offline, bring_bricks_online, are_bricks_offline) from glustolibs.gluster.heal_libs import (monitor_heal_completion, is_volume_in_split_brain) from glustolibs.gluster.glusterdir import mkdir from glustolibs.io.utils import validate_io_procs @runs_on([['arbiter', 'distributed-arbiter'], ['glusterfs']]) class TestAfrReadWrite(GlusterBaseClass): """ Description: Arbiter test writes and reads from a file """ def setUp(self): # Calling GlusterBaseClass 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") 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") # Calling GlusterBaseClass teardown self.get_super_method(self, 'tearDown')() def _bring_bricks_online_heal(self, mnode, volname, bricks_list): """ Bring bricks online and monitor heal completion """ # Bring bricks online ret = bring_bricks_online( mnode, volname, bricks_list, bring_bricks_online_methods=['volume_start_force']) self.assertTrue(ret, 'Failed to bring bricks online') # Wait for volume processes to be online ret = wait_for_volume_process_to_be_online(mnode, volname) self.assertTrue(ret, ("Failed to wait for volume {} processes to " "be online".format(volname))) # Verify volume's all process are online ret = verify_all_process_of_volume_are_online(mnode, volname) self.assertTrue(ret, ("Volume {} : All process are not online".format (volname))) g.log.info("Volume %s : All process are online", volname) # Monitor heal completion ret = monitor_heal_completion(mnode, volname) self.assertTrue(ret, 'Heal has not yet completed') # Check for split-brain ret = is_volume_in_split_brain(mnode, volname) self.assertFalse(ret, 'Volume is in split-brain state') def test_afr_read_write(self): """ Test read and write of file Description: - Get the bricks from the volume - Creating directory test_write_and_read_file - Write from 1st client - Read from 2nd client - Select brick to bring offline - Bring brick offline - Validating IO's on client1 - Validating IO's on client2 - Bring bricks online - Wait for volume processes to be online - Verify volume's all process are online - Monitor heal completion - Check for split-brain - Bring 2nd brick offline - Check if brick is offline - Write from 1st client - Read from 2nd client - Bring bricks online - Wait for volume processes to be online - Verify volume's all process are online - Monitor heal completion - Check for split-brain - Get arequal after getting bricks online """ # pylint: disable=too-many-branches,too-many-statements,too-many-locals # Get the bricks from the volume bricks_list = get_all_bricks(self.mnode, self.volname) g.log.info("Brick List : %s", bricks_list) # Creating directory test_write_and_read_file ret = mkdir(self.mounts[0].client_system, "{}/test_write_and_read_file" .format(self.mounts[0].mountpoint)) self.assertTrue(ret, "Failed to create directory") g.log.info("Directory 'test_write_and_read_file' on %s created " "successfully", self.mounts[0]) # Write from 1st client cmd_to_write = ( 'cd %s/test_write_and_read_file ; for i in `seq 1 5000` ;' 'do echo -e "Date:`date`\n" >> test_file ;echo -e "' '`cal`\n" >> test_file ; done ; cd ..' % self.mounts[0].mountpoint) proc1 = g.run_async(self.mounts[0].client_system, cmd_to_write) # Read from 2nd client cmd = ('cd %s/ ;for i in {1..30};' 'do cat test_write_and_read_file/test_file;done' % self.mounts[1].mountpoint) proc2 = g.run_async(self.mounts[1].client_system, cmd) # Bring brick offline bricks_to_bring_offline = sample(bricks_list, 2) ret = bring_bricks_offline(self.volname, bricks_to_bring_offline[0]) self.assertTrue(ret, 'Failed to bring bricks {} offline'. format(bricks_to_bring_offline)) # Check brick is offline ret = are_bricks_offline(self.mnode, self.volname, [bricks_to_bring_offline[0]]) self.assertTrue(ret, 'Bricks {} are not offline'. format(bricks_to_bring_offline[0])) # Validating IO's for proc, mount in zip([proc1, proc2], self.mounts): ret = validate_io_procs([proc], mount) self.assertTrue(ret, "IO failed on client") g.log.info("Successfully validated all IO's") self._bring_bricks_online_heal(self.mnode, self.volname, bricks_list) # Bring down second brick ret = bring_bricks_offline(self.volname, bricks_to_bring_offline[1]) self.assertTrue(ret, 'Failed to bring bricks {} offline'. format(bricks_to_bring_offline[1])) # Check if brick is offline ret = are_bricks_offline(self.mnode, self.volname, [bricks_to_bring_offline[1]]) self.assertTrue(ret, 'Bricks {} are not offline'. format(bricks_to_bring_offline[1])) # Write from 1st client ret, _, _ = g.run(self.mounts[0].client_system, cmd_to_write) self.assertEqual(ret, 0, "Failed to write to file") g.log.info("Successfully written to file") # Read from 2nd client cmd = ('cd %s/ ;cat test_write_and_read_file/test_file' % self.mounts[0].mountpoint) ret, _, _ = g.run(self.mounts[0].client_system, cmd) self.assertEqual(ret, 0, "Failed to read file on mountpoint") g.log.info("Successfully read file on mountpoint") self._bring_bricks_online_heal(self.mnode, self.volname, bricks_list)