# Copyright (C) 2018-2020 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. from glusto.core import Glusto as g from glustolibs.gluster.brick_ops import remove_brick from glustolibs.gluster.constants import \ TEST_LAYOUT_IS_COMPLETE as LAYOUT_IS_COMPLETE from glustolibs.gluster.constants import FILETYPE_DIRS from glustolibs.gluster.dht_test_utils import validate_files_in_dir from glustolibs.gluster.exceptions import ExecutionError from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on from glustolibs.gluster.volume_libs import ( log_volume_info_and_status, form_bricks_list_to_remove_brick) from glustolibs.gluster.dht_test_utils import is_layout_complete from glustolibs.gluster.mount_ops import mount_volume @runs_on([['distributed', 'distributed-replicated', 'distributed-arbiter', 'distributed-dispersed'], ['glusterfs']]) class RebalanceValidation(GlusterBaseClass): @classmethod def setUpClass(cls): # Calling GlusterBaseClass setUpClass cls.get_super_method(cls, 'setUpClass')() # Check for the default dist_count value and override it if required if cls.default_volume_type_config['distributed']['dist_count'] <= 2: cls.default_volume_type_config['distributed']['dist_count'] = 4 if (cls.default_volume_type_config['distributed-replicated'] ['dist_count']) <= 2: (cls.default_volume_type_config['distributed-replicated'] ['dist_count']) = 4 if (cls.default_volume_type_config['distributed-dispersed'] ['dist_count']) <= 2: (cls.default_volume_type_config['distributed-dispersed'] ['dist_count']) = 4 if (cls.default_volume_type_config['distributed-arbiter'] ['dist_count']) <= 2: (cls.default_volume_type_config['distributed-arbiter'] ['dist_count']) = 4 # Setup Volume and Mount Volume g.log.info("Starting to Setup Volume and Mount Volume") ret = cls.setup_volume_and_mount_volume(mounts=cls.mounts) if not ret: raise ExecutionError("Failed to Setup_Volume and Mount_Volume") g.log.info("Successful in Setup Volume and Mount Volume") def test_induce_holes_then_lookup(self): """ Test Script to induce holes in layout by using remove-brick force and then performing lookup in order to fix the layout. Steps : 1) Create a volume and mount it using FUSE. 2) Create a directory "testdir" on mount point. 3) Check if the layout is complete. 4) Log volume info and status before remove-brick operation. 5) Form a list of bricks to be removed. 6) Start remove-brick operation using 'force'. 7) Let remove-brick complete and check layout. 8) Mount the volume on a new mount. 9) Send a lookup on mount point. 10) Check if the layout is complete. """ # pylint: disable=too-many-statements # Create a directory on mount point m_point = self.mounts[0].mountpoint dirpath = '/testdir' command = 'mkdir -p ' + m_point + dirpath ret, _, _ = g.run(self.clients[0], command) self.assertEqual(ret, 0, "mkdir failed") g.log.info("mkdir is successful") # DHT Layout validation g.log.debug("Verifying hash layout values %s:%s", self.clients[0], m_point) ret = validate_files_in_dir(self.clients[0], m_point, test_type=LAYOUT_IS_COMPLETE, file_type=FILETYPE_DIRS) self.assertTrue(ret, "LAYOUT_IS_COMPLETE: FAILED") g.log.info("LAYOUT_IS_COMPLETE: PASS") # Log Volume Info and Status before shrinking the volume. g.log.info("Logging volume info and Status before shrinking volume") log_volume_info_and_status(self.mnode, self.volname) # Form bricks list for Shrinking volume self.remove_brick_list = form_bricks_list_to_remove_brick(self.mnode, self.volname, subvol_num=1) self.assertNotEqual(self.remove_brick_list, None, ("Volume %s: Failed to form bricks list for volume" " shrink", self.volname)) g.log.info("Volume %s: Formed bricks list for volume shrink", self.volname) # Shrinking volume by removing bricks g.log.info("Start removing bricks from volume") ret, _, _ = remove_brick(self.mnode, self.volname, self.remove_brick_list, "force") self.assertFalse(ret, "Remove-brick with force: FAIL") g.log.info("Remove-brick with force: PASS") # Check the layout ret = is_layout_complete(self.mnode, self.volname, dirpath) self.assertFalse(ret, ("Volume %s: Layout is complete", self.volname)) g.log.info("Volume %s: Layout has some holes", self.volname) # Mount the volume on a new mount point ret, _, _ = mount_volume(self.volname, mtype='glusterfs', mpoint=m_point, mserver=self.mnode, mclient=self.clients[1]) self.assertEqual(ret, 0, ("Failed to do gluster mount of volume %s" " on client node %s", self.volname, self.clients[1])) g.log.info("Volume %s mounted successfullly on %s", self.volname, self.clients[1]) # Send a look up on the directory cmd = 'ls %s%s' % (m_point, dirpath) ret, _, err = g.run(self.clients[1], cmd) self.assertEqual(ret, 0, ("Lookup failed on %s with error %s", (dirpath, err))) g.log.info("Lookup sent successfully on %s", m_point + dirpath) # DHT Layout validation g.log.info("Checking layout after new mount") g.log.debug("Verifying hash layout values %s:%s", self.clients[1], m_point + dirpath) ret = validate_files_in_dir(self.clients[1], m_point + dirpath, test_type=LAYOUT_IS_COMPLETE, file_type=FILETYPE_DIRS) self.assertTrue(ret, "LAYOUT_IS_COMPLETE: FAILED") g.log.info("LAYOUT_IS_COMPLETE: PASS") def tearDown(self): # Cleaning the removed bricks for brick in self.remove_brick_list: brick_node, brick_path = brick.split(":") cmd = "rm -rf " + brick_path ret, _, _ = g.run(brick_node, cmd) if ret: raise ExecutionError("Failed to delete removed brick dir " "%s:%s" % (brick_node, brick_path)) # Unmount Volume and Cleanup 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 Unmount Volume and Cleanup Volume") g.log.info("Successful in Unmount Volume and Cleanup Volume") # Calling GlusterBaseClass tearDown self.get_super_method(self, 'tearDown')()